SECTION 4: MAINTENANCE AND ERVICE

Revision April 2011 4-1

SECTION 4: MAINTENANCE AND SERVICE

Subsection 4A: Maintenance .................................................................................................... 4-3 Subsection 4B: Inspection ...................................................................................................... 4-31 Subsection 4C: Troubleshooting............................................................................................ 4-65

Canrig Top Drive Drilling System

4-2 Revision April 2011


SUBSECTION 4A: MAINTENANCE

Service and Maintenance Location Drawing Off-Driller’s Side View........................................ 4-5 Service and Maintenance Location Drawing Driller’s Side View.............................................. 4-6 Service and Maintenance Location Drawing V-Door Side View............................................... 4-7 Maintenance Checklist ............................................................................................................. 4-8 Lubrication and Maintenance ................................................................................................... 4-9

Hydraulic Oil ........................................................................................................................ 4-9 Hydraulic Oil General Recommendations ........................................................................ 4-9 Filtration............................................................................................................................ 4-9

Grease............................................................................................................................... 4-10 Top Drive Gearcase .......................................................................................................... 4-11

Gear Oil .......................................................................................................................... 4-11 Top Drive Gearcase Oil Capacity................................................................................... 4-12

Handler Rotate Gearbox ................................................................................................... 4-13 Rotary Torque Boost Gearbox .......................................................................................... 4-13 Viscostiy Equivalents......................................................................................................... 4-14

Product Application Sheet...................................................................................................... 4-15 Synthetic Multipurpose Gear Lubricant, Api GI-5 .............................................................. 4-15

Inspection Tests (Typical) .............................................................................................. 4-16 Top Drive Guide ................................................................................................................ 4-16 Top Drive Brakes............................................................................................................... 4-16

Recommended Stacking Procedures for Long Term Storage................................................ 4-17 Stacking............................................................................................................................. 4-17 Cleaning ............................................................................................................................ 4-17 Sealing Openings .............................................................................................................. 4-17 Rust Prevention................................................................................................................. 4-18

Extended Storage – Top Drive Unit ....................................................................................... 4-19 General.............................................................................................................................. 4-19 Bearings, Housing, & Gearcase ........................................................................................ 4-19 Torque Boost & Handler Rotate Gear Boxes .................................................................... 4-19 Link Support ...................................................................................................................... 4-19 Link Tilt Cylinders .............................................................................................................. 4-20 Handler Lock ..................................................................................................................... 4-20 Pins ................................................................................................................................... 4-20 Junction Boxes .................................................................................................................. 4-20 Local Blower...................................................................................................................... 4-20 Quill ................................................................................................................................... 4-20 Top Drive Drilling Motor..................................................................................................... 4-21

Extended Storage – Torque Guide ........................................................................................ 4-22 Pins ................................................................................................................................... 4-22 Tensioning Cables............................................................................................................. 4-22 Tensioning Cylinders......................................................................................................... 4-22 Harpoon............................................................................................................................. 4-22 Junction Boxes .................................................................................................................. 4-22 Utility Lines ........................................................................................................................ 4-23 Crown Hanger ................................................................................................................... 4-23 Rails .................................................................................................................................. 4-23



Extended Storage – Top Drive Support Unit (TDSU) .............................................................4-24 Building ..............................................................................................................................4-24 VFD/SCR/CIP Panels ........................................................................................................4-24 Air Conditioners .................................................................................................................4-24 Grasshopper ......................................................................................................................4-24 Hydraulic System ...............................................................................................................4-24

Extended Storage – Auxiliary Equipment ...............................................................................4-25 Top Drive Re-Commissioning Procedure ...............................................................................4-26

Top Drive ...........................................................................................................................4-26 Drilling Motor......................................................................................................................4-26 Torque Guide .....................................................................................................................4-27 Top Drive Support Unit (TDSU) .........................................................................................4-27

Capscrew Torque Values........................................................................................................4-28 Recommended Tools..............................................................................................................4-29

Testing a Solenoid Coil ...........................................................................................................4-30 Failure................................................................................................................................4-30 Testing Procedure .............................................................................................................4-30


Revision December 2009 4-5

Service and Maintenance Location DrawingOff-Driller’s Side View

Figure 4.1_1250AC-681

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Subsection 4A: General Maintenance

4-6 Revision December 2009

Service and Maintenance Location DrawingDriller’s Side View

Figure 4.2_1250AC-681


Revision December 2009 4-7

Service and Maintenance Location DrawingV-Door Side View

Figure 4.3_1250AC-681



Maintenance Checklist Week beginning: ________________________

MAINTENANCE FUNCTION FREQ PERFORMED BY MON TUE WED THU FRI SAT SUN

GREASE WASHPIPE PACKING A 12 HRS GREASE MUD SAVER VALVE (IF APPLICABLE) E 12 HRS

GREASE LWCV ACTUATOR (IF APPLICABLE) AA Note 1 GREASE LINK TILT CYLINDER BUSHINGS C DAILY

CHECK INDICATOR ON HYDRAULIC FILTER * M DAILY CHECK INDICATOR ON LUBE OIL FILTER * N DAILY

CHECK OIL LEVEL ON TOP DRIVE GEARBOX W DAILY CHECK TOP DRIVE FOR LOOSE OR LEAKING

HYDRAULIC FITTINGS OR COMPONENTS X DAILY

EXAMINE TOP DRIVE FOR LOOSE BOLTS, ETC. Z DAILY CHECK FLUID LEVEL IN BRAKE ACTUATOR(S) DAILY

GREASE LINK SUPPORT D WEEKLY DAY: M TU W TH F SA SU BY: GREASE BUW MAIN TUBES G WEEKLY DAY: M TU W TH F SA SU BY:

GREASE BUW GRIPPER CYLINDER H WEEKLY DAY: M TU W TH F SA SU BY: GREASE BUW GRIPPER HYD. SWIVEL FITTINGS WEEKLY DAY: M TU W TH F SA SU BY: GREASE ROTARY MANIFOLD LIFT SPRINGS

(MODEL 6027 ONLY) WEEKLY DAY: M TU W TH F SA SU BY:

GREASE HANDLER LOCK J WEEKLY DAY: M TU W TH F SA SU BY: CHECK & CLEAN LUBE SUCTION Y-STRAINER T WEEKLY DAY: M TU W TH F SA SU BY:

CHECK GEARCASE BREATHER V WEEKLY DAY: M TU W TH F SA SU BY: EXAMINE BRAKE PADS FOR WEAR Y WEEKLY DAY: M TU W TH F SA SU BY:

GREASE LUBE OIL PUMP F MNTHLY DATE DUE: BY: CHECK OIL LEVEL IN HANDLER ROTATE

GEARBOX P MNTHLY DATE DUE: BY:

CHECK OIL LEVEL IN TORQUE BOOST GEARBOX

Q MNTHLY DATE DUE: BY:

INSPECT BRUSHES ON DC MOTOR K MNTHLY DATE DUE: BY: CHECK & CLEAN SPARK ARRESTOR SCREENS L MNTHLY DATE DUE: BY:

CHANGE OIL IN TOP DRIVE GEARBOX U 2 MTHS DATE DUE: BY: CHANGE OIL IN HANDLER ROTATE GEARBOX R 6 MTHS DATE DUE: BY:

CHANGE OIL IN TOQUE BOOST GEARBOX S 6 MTHS DATE DUE: BY:

HYDRAULIC POWER UNIT MAINTENANCE (IF APPLICABLE) CHECK OIL LEVEL IN RESERVOIR DAILY

CHECK INDICATOR ON PRESSURE FILTER * DAILY CHECK INDICATOR ON RETURN FILTER * DAILY

CHECK & CLEAN SUCTION Y-STRAINER BI-WKLY Note 1: Refer to manufacturers literature * Change filter if indicator shows RED. This checklist is intended to be a guide ONLY. Please refer to Subsection 4A of this manual for more detailed instructions and specifications.

NOTE: This checklist is coded to the alphabetical labels found on the Service and Maintenance Location Drawings.

Subsection 4A: Maintenance


Lubrication and Maintenance

Hydraulic Oil High quality hydraulic oil is essential for satisfactory performance and long hydraulic system component life. Oil having viscosity index of 100 or greater will give good results under normal temperature conditions. The use of oil having a high viscosity index will minimize cold-start trouble and reduce the length of warm-up periods. A high viscosity index will minimize changes in viscosity with corresponding changes in temperature. Maximum cold weather start-up viscosity should not exceed 5000 SUS with a pour point at least 12°C (20°F) lower than the minimum ambient temperature. The use of in-tank oil heaters to preheat the oil is recommended in cold temperature applications. This will reduce the start-up temperatures and allow the use of a higher ISO grade of oil. Under continuous operating conditions the temperature of the oil at any point in the system should not exceed 82°C (180°F). 27- 60°C (80-140°F) is generally considered optimum. Anti-wear type hydraulic oils are recommended. These oils are generally developed and evaluated on the basis of pump wear tests such as ASTM-D2882. These oils offer superior protection against pump and motor wear. They also provide good demulsibility as well as protection against rust.

Hydraulic Oil General Recommendations

Suggested Ambient Temperature (°C) Range

Recommended Operating Temp. Range of Oil* (°C)

ISO Grade of Oil

<-40 to 20** -30 to +35 15 -40 to 30** -20 to +55 22 -20 to 40** -15 to +60 32

-5 to 50 -5 to +75 46 5 to >50 5 to +85 68

*If the operating temperature of the oil exceeds the recommendation, the oil should be changed to the appropriate ISO grade to prevent equipment damage. **Use of tank heaters recommended for cold temperature start-up.

Filtration

The finer the filtration the better the achieved purity Grade of the hydraulic oil and the longer the life of the components. To ensure the optimum operation of the hydraulic system a minimum cleanliness level should be maintained of: 9 To NAS 1638 6 To SAE 18/15 To ISO/DIS 4406



Hydraulic Oil change should be performed at minimum every 3000 hours of operation or annually, which ever is less. Oil analysis can be performed to more accurately determine oil quality and the contaminant level in the system. Check bypass indicators daily. If indicator shows RED, change the filter element. Hydraulic element should be changed every 6 months.

Grease Use multi-purpose lithium complex grease complying with N.L.G.I. classification No.1 or No.2 at the following:

Ref. Location Fittings Frequency Grease Quantity

A Washpipe 1 Every 12 hours To excess

C Spherical Bushings – Link Tilt 4 Daily To excess

D Link Support 8 Weekly 10 pumps per fitting

E Mud Saver Valve 2 Weekly Stem: 2 pumps Ball: 4 pumps

F Lube Pump 1 Monthly 1 pump

G Back-up Wrench Main Tube 5 Weekly 10 pumps per fitting

H Back-up Wrench Gripper Cylinder 2 Weekly 10 pumps per fitting

J Handler Lock (pin-type only) 1 Weekly 1 pump

Rotary Manifold Lift Springs (Model 6027E only)

4 Weekly To excess

Refer to Service and Maintenance Location Drawings in the Section for locations of the grease fittings.



Top Drive Gearcase Canrig Top Drives are designed to be used with ISO Industrial EP (Extreme Pressure) Gear Oils. EP oils are high quality, extreme pressure compounded type oils for use in all types of industrial gear sets except those with built-in variable speed type friction drive mechanisms. The use of EP ensures increased unit life under heavily loaded or shock loaded service conditions. The EP oils give superior rust protection to ferrous metal surfaces and are non-corrosive to steel, copper, brass, bronze and other common bearing materials. EP can be used in continuous service, with normal re-lubrication intervals, at temperatures up to 93°C. Above 93°C, the rate of sludging and additive depletion increases and more frequent oil changes may become necessary.

Gear Oil

Ambient Temperature

(°C)

A.G.M.A. Number

Maximum Operating

Temperature (°C)

CANRIG Top Drive Gear Oil

Shell Lubricant

ESSO* Lubricant

ELF Lubricant

CHEVRON Gear

Compound EP

-45° to –20° 25° Geartherm® Arctic AS

Spartan® EP 32

-30° to 0° 37° Geartherm® Arctic AS

Spartan® EP 32

-10° to +20° 2 EP 52° All Season Omala® 68 Spartan® EP 68

Reductelf®SP 68 68

10° to 40 ° 3 EP 63° All Season Omala® 100 Spartan®

EP A/S Reductelf®

SP 100 100

30° to 60° 4 EP 74° All Season Omala® 150 Spartan®

EP 150 Reductelf®

SP 150

40° and up 5 EP 80° Omala® 220 Spartan® EP 220

Reductelf®SP 220

*Comparable products are available in the USA from the Exxon Corporation. Canrig Top Drives are designed to be used with ISO Industrial EP (Extreme Pressure) Gear Oils. Oils meeting AGMA specifications and grades shown in the above chart could be used in the Canrig Top Drive. See Lube and Maintenance for further information. For approval of a specific oil, contact Canrig Engineering Department. Oil should be changed at planned intervals of 60 days or 1000 drilling hours or less. Oil should never be permitted to become visibly contaminated with mud or water, which will cause rapid bearing failure. If there is any doubt about the oil quality, it should be changed even though the change interval has not expired. Refer to Gearcase Capacity Chart for oil quantities. The gearcase can be drained by removing the drain plug in the bottom of the gearcase. Remove the drain plug at the bottom of the rotary manifold to remove any oil in the manifold. Magnetic plugs are located on the bottom of the gearcase and in the Y-strainer to catch small metallic wear particles. An appreciable accumulation of such particles can be a clue to incipient bearing failure.



Check the breather (located on the bonnet) on a weekly basis to ensure that they are not plugged. Replace as required. Seal damage may occur if pressure is allowed to build in the gearcase. Check bypass indicators daily. If indicator shows RED, change the filter. Lube filter element should be changed at every oil change.

Top Drive Gearcase Oil Capacity

Top Drive Model US Gallons Litres Oil Level Below Gearcase Window

4017 4-6 15-22 Check dipstick for level

6027E 10 38 ½” 13 mm

8035/1035E-500 10 38 ½” 13 mm

1050E-500 10 38 ½” 13 mm

1050E-712 12 45 ½” 13 mm

1165/1175E-712 12 45 ½” 13 mm

1035AC-500 10 38 ¾” 19 mm

8050AC-712 10 38 ¾” 19 mm

1250AC-681 10 38 ¾” 19 mm

1275AC-681 10 38 ¾” 19 mm

These oil levels may vary with operating conditions. The oil level can be lowered during high speed drilling to reduce heat creation. When operating a Canrig Top Drive unit in humid climates or when using corrosive drilling fluids (for example: high brine content) visually check the lubrication oil on a weekly basis for water contamination. Samples should also be taken for a visual examination.



Handler Rotate Gearbox Planetary Gearbox – Canrig Part # M15-1002-010 Use EP 150 GR. 150 gear oil or equivalent. Oil should be changed for the first time after 500 working hours. Subsequent changes should be done after every 2000 to 4000 hours or after 6 months. Check oil level every month.

CAUTION: New gearbox must be filled with oil prior to use.

Rotary Torque Boost Gearbox Planetary Gearbox – Canrig Part # M15-1001-010 Use EP 150 GR. 150 gear oil or equivalent. Oil should be changed for the first time after 500 working hours. Subsequent changes should be done after every 2000 to 4000 hours or after 6 months. Check oil level monthly.

CAUTION: New gearbox must be filled with oil prior to use.



Viscosity Equivalents Figure 4.4



Product Application Sheet Canrig All-Season Gear Oil

Synthetic Multipurpose Gear Lubricant, Api Gl-5

Canrig All-Season Gear Oil is a synthetic-based multipurpose, extreme pressure, API GL-5 gear lubricant. It is compounded to meet the severe lubrication requirements of equipment. It may also be used anywhere the manufacturer specifies API GL-5 gear oil. Canrig All-Season Oil provides outstanding service over a wide temperature range and has excellent durability at elevated temperatures. It meets the requirements of API GL-5 and MT-1, as well as MIL-PRF-2105E and MIL-L-2105D.

Description

Canrig All-Season Gear Oil is formulated with synthetic polyalphaolefin (PAO) base oils and selected additives that provide extreme pressure properties, oxidation resistance, rust and corrosion protection, and foam resistance. The synthetic base oils have excellent thermal stability at elevated temperatures and outstanding low temperature properties. These features provide for extended drain service and superior year-round performance exceeding that of conventional hypoid gear lubricants. Canrig All-Season Gear Oil provides excellent performance in transmissions operating under varying conditions of speed, load, temperature, and torque. It is inhibited to minimize deposits and viscosity increase due to oxidation at high temperatures. It protects metal parts against rust and corrosion and is non-corrosive to steel or bronze under normal operating conditions. A foam inhibitor prevents excessive foam buildup that can interfere with proper lubrication.

Outstanding Features

● Outstanding thermal stability to minimize oxidative sludge and varnish formation ● High film strength and excellent shear stability ● Excellent load carrying capacity and protection against scuffing and wear ● Superior low temperature properties ● Good rust and corrosion protection ● Good foam resistance ● Compatible with other MIL-L-2105D quality gear lubricants (1)

Note: For optimum performance, the mineral oil lubricant should be drained before using Canrig All-Season Gear Oil. Mixing products may reduce the effectiveness and advantages normally gained by using Canrig All-Season Gear Oil.



Inspection Tests (Typical):

SAE Grade 75W-90 Density, g/cm³ @ 15°C .090 Color, ASTM 8.0 Flash Point, COC, °C (°F) 205 (400) Pour Point, °C (°F) -45 (-49) Viscosity cP <150,000 (Brookfield) @ °C (°F) -40 (-40) cSt @ 40°C 125 cSt @ 100°C 17.0 SUS @ 100°F 642 SUS @ 210°F 87.8 Viscosity Index 149 Copper Corrosion, ASTM D130

Pass

Foam Test, ASTM D892 Pass Non-Channeling, @ °C (°F) < -50 (< -58)

Top Drive Guides

Light grease or grease mixed with oil can occasionally be applied to the Torque Guide rails to improve sliding performance.

Top Drive Brakes The brake fluid reservoir should be visually checked on a daily basis. A sudden drop in oil level may indicate worn components. Be sure to use only mineral-based oil in the brake system (i.e. hydraulic oil). Also refer to the Top Drive Disc Brake inspection procedure in Subsection 4B of this Manual.



Recommended Stacking Procedures for Long Term Storage

The following data and procedures are intended to assist in properly maintaining the Top-Drive if it is to be stored or “stacked” for some period of time. Proper maintenance during storage will reduce “re-start” time and assure more trouble-free operation.

Stacking Enough beams should be provided to give normal support to the Top Drive/Torque Guide and TDSU and be high enough to avoid having accumulated or run off water reach the equipment. A drained location is preferable so that water will not remain under the equipment and cause abnormal dampness.

Cleaning Mud, adhering dirt, and other foreign matter of a type that will hold moisture should be removed. If cleaning is done with steam or with mineral spirits, care should be taken to avoid washing lubricating oil or grease from unpainted surfaces unless it is to be replaced or a preservative compound applied. If, in cleaning, the lubricant is removed from close fitting elements, they should be rotated after new lubricant or a preservative has been applied so that it will work into the fits. Apply touch-up paint to all areas where paint has been removed. Loose paint and rust should be wire brushed away, the surface cleaned and the paint (primer) applied to a dry surface.

Sealing Openings In general all openings that allow moisture to enter an area and be trapped should be sealed. Adhesive waterproof tape is convenient to use and effective. (Use Kendall No. 231 or equivalent. Do not use duct tape; it will only seal for a short length of time). It should be applied over a cleaned surface. Small openings can be covered by tape alone, or by tape and a plastic sheet, unsupported. Large openings may require support such as plywood cut to opening size, covered by plastic and/or tape.



Rust Prevention The most troublesome problem encountered during storage is rust and corrosion. Humid conditions associated with a top-drive system sitting idle can create considerable maintenance problems. Space heaters are provided in the traction motor. Space heaters should be on at all times, if practical. They offer the best method of stopping rust in electrical equipment and metal parts that cannot be coated. A film of lubricant can best protect gearing and other rotating components. The film can be maintained by manually coating the parts and by periodic operation. All gears and drives ride on roller or ball bearings that need regular greasing to drive out moisture and keep the rollers and races grease coated. Condensation in the gearboxes will need to be drained periodically. Finally, operation (or rotating) of the equipment for a short time helps to distribute oil and grease and re-coat all gearing for improved rust protection. All the above are covered in further detail. These measures are neither expensive nor time consuming and offer the best method of preventing problems during and after a re-start. Please contact Canrig Drilling Technology Ltd. if you have any questions or need further information. WARNING: Cleaning solvents may be toxic and/or flammable. They can cause

serious or fatal injury if used without proper precautions. For safety: 1. Do not inhale solvent fumes. 2. Use solvents only in adequately ventilated areas. 3. Avoid contact of solvent with skin. 4. Do not expose solvent to flame or sparks. 5. Observe caution statements issued by the manufacturer of the solvent.



Extended Storage – Top Drive Unit If the Top Drive unit is to be stored (stacked) for any extended length of time before use, precautions should be taken using the following guidelines.

General 1. Indoor storage is preferred whenever possible. If outside storage is necessary, ensure

the Top Drive is properly supported (preferably on its torque guide), and is well away from adverse conditions, e.g. salt water spray, sand, shot blast operations, etc.

2. An all around visual inspection should be given to the exterior of the top drive. All areas where the paint has worn off or where there are signs of rust forming should be cleaned and painted or have a rust inhibitor applied. Recoat with rust inhibiting oil when necessary. Water-resistant grease should be applied to all grease nipples. Fill grease nipple openings.

Bearings, Housing, & Gearcase 1. For long term storage, use oil with strong adhesion properties (Esso Sebis K – 68 or

equivalent). 2. Fill to ½ inch below the top of the gearcase sight glass with the proper oil, and run for 10

to 15 min before laying down the Top Drive. 3. If stored outside, rotate every month; if inside every three months.

Torque Boost & Handler Rotate Gear Boxes 1. After the top drive is rigged down, completely fill (through their breather ports) both

gearboxes with gear oil containing a rust inhibitor additive.

Link Support 1. Bleed the pressure off while the top drive is still standing so the link support will settle to

its lowest possible point. 2. Coat the upper section of the outer sleeve with rust inhibitor.



Link Tilt Cylinders 1. Fully retract the link tilt cylinders. 2. Spray pins and bushings with rust inhibitor.

Handler Lock

1. Preferably store the top drive with the handler in the unlocked position.

Pins 1. Coat all exposed areas of pins with rust inhibitor.

Junction Boxes 1. Ensure that the door and strain reliefs are secured tightly. 2. Seal any other openings to provide a watertight enclosure. 3. Add moisture-absorbing pads inside each junction box.

Local Blower 1. Cover blower intake and outlet as well as all drain holes with plastic and a wide

adhesive waterproof tape.

Quill 1. For extended storage it is recommended that the washpipe packing assembly be

removed, cleaned, liberally coated with grease and reassembled to the Top Drive. 2. The tool joint should be cleaned, re-doped, and thread protector installed.



Top Drive Drilling Motor

Indoor storage of the drilling motor is preferred. A dry ambient temperature of 60ºF is ideal if possible. In a high humidity environment an ambient of 70ºF is recommended. Every attempt should be made to avoid widely varying temperatures and high humidity. If stored outdoors, a protective cover acting as an umbrella should be used to prevent entrance of rain, dust, etc. The drilling motor is equipped with an AC space heater (120VAC, 210W). These heaters should be energized to keep the internal machine temperature above ambient temperature, preventing condensation and sweating. All exposed machined steel parts and surfaces should be examined for rust. Rust should be removed using fine abrasive paper. Methanol should be used to remove all residues. Extreme care should be taken not to damage critical machined surfaces such as the tapered shaft surface while removing rust. The surfaces should be coated with a rust inhibitor. DC brushes should be removed from their holders and clamped under the spring clips to prevent corrosion of the commutator surface as a result of moisture absorption by the carbon. Do not completely seal the motor, but cover major vent areas including the blower inlet opening with waterproof tape. Leave enough opening so the machine can breathe – i.e., moist air is not trapped. The intention is to prevent entrance of water, dust, small animals, but not to seal airtight. We do not recommend use of silica gel or dehydrating agents. Since the lubricant drains from the top half of bearings during storage, this area is subject to corrosion. The shaft should be rotated periodically to redistribute a protective film. If stored inside, rotate every three months. If outside, every month. Before placing the machine back into service after prolonged storage (1 year or more), bearings should be inspected and repacked with new grease meeting the recommended GE lubrication specification. The machine should be meggered when placed into storage and periodically while in storage (3-month intervals). Keep a record of the megger readings as a rapid decrease in insulation resistance indicates the machine condition is deteriorating and the storage conditions inadequate.



Extended Storage – Torque Guide If the Torque Guide is to be stored (stacked) for any extended length of time before use, precautions should be taken using the following guidelines. General 1. The Torque Guide should be washed and racked in a level position, properly supported

with timbers high enough to avoid having accumulated or run off water reach the cylinders and cables. Ensure that it is protected from adverse conditions, e.g. salt water spray, sand, shot blast operations, etc.

2. Visually inspect all around the exterior of the torque guide. Apply touch up paint to all areas where the paint has worn off. Any places that show signs of rust forming should be cleaned, painted or have a rust inhibitor applied. Recoat with rust inhibiting oil when necessary.

Pins

1. Coat all pins with rust inhibitor.

Tensioning Cables

1. Unpin the tensioning cables from the cylinders and spray the thimbles with rust inhibitor. 2. Ensure that the cables are not kinked, pinched or under tension in any way.

Tensioning Cylinders 1. Retract the tensioning cylinders fully. Coat cylinder rod eye with rust inhibitor.

Harpoon 1. Coat the latching mechanism with rust inhibitor.

Junction Boxes 1. Ensure that all doors and strain reliefs are secured tightly, and holes left from the

grasshopper leads (444 cables) are sealed. 2. Add moisture-absorbing pads inside each junction box.



Utility Lines 1. Cables should be free and clear of pinch points and kinks. All plugs should be tightly

assembled and capped. 2. Any damaged or worn areas of the electric service loop should be repaired or covered

to prevent water from entering through the outer skin.

Crown Hanger 1. Coat all pins, bolts, and exposed metal areas with rust inhibitor.

Rails 1. Coat with grease or rust inhibitor.



Extended Storage – Top Drive Support Unit (TDSU)

If the TDSU is to be stored (stacked) for any extended length of time before use, precautions should be taken using the following guidelines.

Building 1. Wash and store the building in a level position on timbers high enough to avoid having

accumulated or run off water reach the floor of the skid and potentially enter the SCR room and/or parts storage area. Apply touch-up paint as required. The building should be protected from adverse conditions, e.g. salt water spray, sand, shot blast operations, etc. Ensure that all hydraulic and air quick-couplers, electrical plugs and receptacles are capped and securely covered.

VFD/SCR/CIP Panels 1. Open all contactors. 2. Add moisture-absorbing pads inside the panels.

Air Conditioners 1. Cover the intake side to prevent dust and debris from clogging the fins.

Grasshopper 1. Wrap all lugged leads. Ensure that all plugs capped tightly.

Hydraulic System 1. Remove the breather from the HPU tank and replace it with a 1.5 in NPT plug. 2. Remove the drain plug from the catch tray to prevent water buildup.



Extended Storage – Auxiliary Equipment If auxiliary equipment is to be stored for any extended length of time before use, precautions should be taken using the following guidelines: 1. Before laying down the Top Drive, break off the lower well control valve and drill pipe kit

if installed. 2. Thoroughly clean and re-grease the lower well control valve actuator and all manual

control valves. Cycle the valves a few times to work the grease into them. 3. Thoroughly clean all tool joints. Re-dope and install thread protectors. 4. Remove the tool joint clamps, grease the bolts, and reassemble them. 5. Relocate the Top Drive control panel to the SCR room for safe storage. Clean-out any

foreign debris inside the panel and put bags of desiccant inside the panel to help absorb moisture.

6. All spare parts subject to corrosion and/or damage should be wrapped for protection. Use a corrosion inhibitor paper for rust sensitive parts.

7. Thoroughly clean and apply touch-up paint as required to wireline sheave assembly, floor stabilizer, and all other components. When possible store inside the TDSU building.



Top Drive Re-Commissioning Procedure Prior to putting a “preserved-stacked” Top Drive System back into service, precautions should be taken using the following guidelines: These do not preclude the need to follow the maintenance practices as outlined elsewhere in this manual.

Top Drive 1. Drain stacking oil from gearbox and fill to normal operating level with Canrig specified

gear oil. Run Top Drive for 10–15 min, drain and refill to normal operating level. 2. Drain and fill the torque boost and handler rotate gear boxes to appropriate level with

Canrig specified gear oil. 3. Uncover intake and drain holes on local or remote blower. Test run in the down position

to blow out any dust and debris before commencing with drilling activities. 4. Check all terminal blocks in junction boxes for tightness.

Drilling Motor Before placing a stored motor in use: 1. Blow dust and dirt accumulation out of windings with clean, dry air. 2. (For DC motor applications only) Re-set the brushes. Visually inspect for spring

corrosion, sticking brushes in brush holders, and general defects. 3. Check winding insulation continuity to ground with a 500 volt megger. If the megger

reading is less than 2 megohms, the windings should be baked or dried until the moisture content is sufficiently reduced to raise the megger reading to 2 megohms.

4. An electrical source of heat is best for drying as it can be easily regulated and is clean. Proceed as follows:

• Remove the armature from the frame and remove bearings from the armature shaft. Heat the frame and armature until dried sufficiently to obtain the 2 megohm reading.

• Pack bearings with new grease. Refer to LUBRICATION AND MAINTENANCE RECOMMENDATIONS for the proper type and amount of grease.

• Reassemble the motor.

• If facilities are available, give the reassembled machine a running test to check bearings.



Torque Guide 1. Check that the harpoon latching mechanism is functioning correctly and freely. 2. Check all junction box terminal blocks for tightness.

Top Drive Support Unit (TDSU) 1. Remove covers from intake sides of air conditioners. 2. Open valves on inlet side of HPU pumps 3. Unwrap all lugged leads on the grasshopper and check for cleanliness or damage. 4. Ensure all valves on HPU are open. 5. Remove NPT plug from breather port of HPU tank and install Canrig breather. 6. Check all terminal blocks for tightness These instructions do not purport to cover all details or variations in equipment nor to provide for every possible contingency to be met in connection with installation, operation or maintenance. Should further information be desired or should particular problems arise which are not covered sufficiently in this text, the matter should be referred to Canrig Drilling Technology Ltd.



Capscrew Torque Values

All capscrews and bolts used on a Canrig Top Drive meet or exceed the SAE Gr.8 specifications. These must be torqued to the values shown on the assembly drawings or to the value charted below. In addition, the following guidelines should be followed when reinstalling capscrews or bolts: • All capscrews or fasteners permanently installed must be coated with Loctite 242 Threadlocker

or the equivalent after insuring that the capscrew threads and mating thread are free of all dirt, oil and grease. This is a medium strength threadlocker that prevents rusting of all threads and prevents loosening due to vibration. This threadlocker can be sheared using normal hand tools.

• All capscrews or fasteners that require periodic loosening to facilitate adjustment of

components (tool joint clams, link tilt clamps, guide rails, etc.) should be coated with anti-seize thread compound 767 or the equivalent.

• When using capscrews with locknuts, use only Grade C Stover locknuts or equivalent.

These can be identified visually by eight raised dots. These are re-usable, but new nuts are recommended after repeated removal and installation.

Hex Head Capscrew Socket Head Capscrew

Plated Bolts or Machined

Flat Head Capscrews Button Head Capscrews

Size Torque ft/lb

Torque N/m

Torque ft/lb

Torque N/m

Torque ft/lb

Torque N/m

1/4 11 15 8 11 8 11 5/16 23 31 17 23 16 21 3/8 40 54 30 39 26 34

7/16 65 88 49 64 42 55 1/2 99 134 74 97 63 82

9/16 159 216 119 156 101 133 198 198 268 149 194 126 165 3/4 350 475 263 343 230 292 7/8 566 767 425 556 360 472 1 848 1150 636 833 540 707

1 1/8 1245 1688 934 1222 792 1037 1 1/4 1750 2373 1313 1718 1114 1458



Recommended Tools FOR SERVICE AND MAINTENANCE OF A CANRIG TOP DRIVE

Adjustable Wrenches: 6”, 10” and 18” Assorted Pliers: Needle Nose, Pliers, Side Cutters, Electrician’s Scissors Assorted Screwdrivers: Ball-driver Wrenches: 9mm, 13mm Combination Wrenches: 1/4” to 1 1/2” Dial Caliper Dial Indicator Drill Bit Set: 1/16” to ½” Extractor Set Feeler Gauges Flashlight Gauge Adapter Hammer Hand Wrenches: 5/8”, 11/16”, 7/8”, 15/16”, 1 3/8”,Crowfoot Wrench, 15/16” Hex Bit Sockets: 3/8”, 3/4” drive, 5/16” to 3/4” Hex Key Wrench Set: Imperial – 1/16” to 3/8”, Metric – 1.5mm to 10mm Inspection Mirror Lockwire Machinist’s File Kit Magnetic Base Magnetic Retrieval Tools: 8” pocket tool and telescoping tool O-Ring Splicing Kit Pick Pinch Bar Pipe Wrenches: 12”, 18” Pressure Gauge Punch and Chisel Set Seal and O-Ring Shackle, 5/8” Socket Set: 3/8” & 3/4” drive, 1/4” to 1 1/2” Soldering Iron and Supplies Spinnaker Frame Stubs File Needle Taps, Bottoming: 1/4” to 1” Taps, Pipe: 1/4” to 1/2” T-Handle Hex Key Set: Imperial – 1/16” to 3/8”, Metric – 2.5mm to 10mm Utility Knife Wire Brush



Testing a Solenoid Coil

Failure • The main reason for failure of a solenoid is excessive heat.

• A sign of impending solenoid failure may be a peculiar odor, followed by the discovery of melted or cracked insulation.

• A chattering noise could also signal solenoid failure.

Testing Procedure 1. Disconnect the power source. 2. Test the solenoid coil by attaching an ohmmeter (set to a low resistance range) across

the coil terminals.

• A relatively low reading should be observed on the meter if the coil is good.

Solenoid Manufacturer

Operating Voltage

Approximate Resistance

Vickers 24 VDC 19 ohms

120 VAC 32 ohms

Rexroth 24 VDC 35 ohms

• It should not read zero ohms as this is an indication that the coil windings are shorted to each other, probably the result of melted insulation.

• If the ohmmeter reads infinity, it means that the coil is open and defective.


SUBSECTION 4B: INSPECTION

Recommended Inspection Program....................................................................................... 4-32 General Inspection ............................................................................................................ 4-32 Catergory I Inspection - Daily ............................................................................................ 4-32 Catergoy II Inspection - Weekly ........................................................................................ 4-32 Category II Supplemental - 3 Months or at Rig Move ....................................................... 4-33 Category III Inspection - Every 6 Months .......................................................................... 4-33

Category IV Inspection - 1000 Working Days ................................................................... 4-34 Inspection Following Periods of Rough Drilling or Jarring...................................................... 4-35 Wear Limits............................................................................................................................ 4-36 Inspection Indication Maps..................................................................................................... 4-37 Main Housing .................................................................................................................. 4-37 Spindle ............................................................................................................................ 4-38 Split Ring ......................................................................................................................... 4-39 Quill ................................................................................................................................. 4-40 Upper Link Support ......................................................................................................... 4-41 Outer Sleeve ................................................................................................................... 4-42 Upper Link Pin................................................................................................................. 4-43 Upper Link ....................................................................................................................... 4-44 Bail .................................................................................................................................. 4-45 Mudline............................................................................................................................ 4-46 Torque Guide Skid/Section 1 .......................................................................................... 4-47 Torque Guide Live Roll.................................................................................................... 4-48 Torque Guide Section 2 .................................................................................................. 4-49 Torque Guide Section 3 .................................................................................................. 4-50 Torque Guide Section 3/Service Support Frame ............................................................ 4-51 Torque Guide Section 4 .................................................................................................. 4-52 Torque Guide Section 5 .................................................................................................. 4-53 Torque Guide Pin ............................................................................................................ 4-54 Harpoon........................................................................................................................... 4-55 Top Drive Frame ............................................................................................................. 4-56 Top Drive Guard.............................................................................................................. 4-57 Blower Frame.................................................................................................................. 4-58

Main Bearing End Play.......................................................................................................... 4-59 WashPipe Inspection ............................................................................................................ 4-61 Top Drive Disc Brake Inspection .......................................................................................... 4-63 Check Brake Fluid............................................................................................................ 4-63 Check Brake Calipers ...................................................................................................... 4-63 Manual Brake Bleeding .................................................................................................... 4-63 Auto Brake Bleeding ........................................................................................................ 4-64



Recommended Inspection Program

General Inspection Inspection plans and inspection frequency of the top drive can be developed using API Recommended Practice 8B, Procedures for Inspections, Maintenance, Repair and Remanufacture of Hoisting Equipment. The following can be used as a guideline. The frequency and type of inspection can be affected by one or more of the following factors and should be taken into account when doing any inspection:

• Environment

• Load cycles

• Regulatory requirements

• Operating time

• Drilling conditions

• Maintenance Inspections should always be performed by a person knowledgeable in the equipment and its function.

Category I Inspection - Daily When in use, equipment should be visually inspected on a daily basis for cracks, loose fits or connections, elongation of parts or other signs of wear, corrosion, overloading and proper operation.

Category II Inspection - Weekly This is a Category I inspection plus further inspection to include: 1. Visually inspect the following for wear, deformation, cracks or corrosion:

• Bail (if applicable) • Block Interface • Upper links • Main housing • Rotary manifold outer sleeve • Upper link support

2. Visually check the welds on the top drive frame, guard, mounts and supports for cracks or damage. Inspect for paint flaking or cracking which may indicate potential failure. Examine for dents, bends, abrasion and corrosion.

3. Visually check the Top Drive unit for loose bolts, nuts, broken wires on bolts or damaged safety wire. Retorque and rewire as required.

4. Visually inspect the electrical cables for wear, damage or loose connections. 5. Check for worn, cracked or distorted parts such as: pins, shafts, gears and guards.

Subsection 4B: Inspection


Category II Supplemental – 3 Months or at Rig Move

• Visually check the complete Torque Guide for any damage (i.e. bending or cracking).

• Visually check the integrity of all of the Torque Guide turnbuckles, pins, spherical bushings, and wire rope slings.

• Visually check all the welds on the Torque Guide System including the harpoon for cracks. If suspicious cracks were found, a full Dry Magnetic Particle inspection must be made to all the welds included but not limited to those shown in the Torque Guide Inspection Maps.

• Check for loose bolts and mountings for the blower, mast junction box, cable trays and hydraulic tubes.

• Visually check the service loop and service supports/mounts on the torque guide.

• Visually check the blower and welds on Blower Frame.

• Visually check the Grass Hopper for any damage (i.e. bending and cracking). In addition, check all the welds for cracks.

• Check the clearance in the main Top Drive bearings and re-shim if necessary according to the schedule and instructions in this manual.

• Check the gap between the Brake Disk and the caliper. The disc should be centered in the caliper.

Category III Inspection – Every 6 months This is a Category II inspection plus further inspection, which should include NDE of critical exposed areas and may involve some disassembly to access specific components. This may include NDE of:

• Bail (if applicable) • Block Interface • Upper Links • Upper Link Pins • Main Housing Pin Holes • Rotary manifold outer sleeve • Upper link support Ears

Remove the LWCV and inspect the connections (including the quill pin) using NDE methods according to API RP7G.



Category IV Inspection - 1000 Working Days

This is a Category III inspection plus further inspection for which the equipment is disassembled to the extent necessary to conduct an NDE inspection of all primary load carrying components and is recommended every 1000 working days. 1. Disassemble the Top Drive unit. 2. Inspect all of the following hoisting load path components using NDE techniques:

• Quill • Spindle • Split Ring • Upper link support • Rotary manifold outer sleeve • Housing • Upper links • Bail (if applicable) • Block Interface • Upper link pins (4)

Prior to inspection, remove all grease, paint, oil, etc. See the Inspection Maps at the end of Section 4B for procedure and acceptance criteria.

3. Check all bearings, seals, seal running surfaces, gears and splines. Refurbish as necessary.

4. Inspect all the welds in the Torque Guide System using NDE techniques as specified on the inspection maps at the end of Section 4B.

5. Inspect the end plates and lugs in the torque tubes for any damage and ensure that the lugs are properly aligned between sections.

6. Inspect the drilling motor for cleanliness or damage and send to a qualified repair shop for further inspection and repair if necessary. Refer to relevant manufacturers’ literature for recommended procedures.



Inspection Following Periods of

Rough Drilling or Jarring After periods of rough drilling, especially on surface hole, various Top Drive components can loosen due to vibration. The following inspection procedure is recommended after periods of rough drilling: • Perform a thorough visual examination of the Top Drive, looking for any signs of

damage.

• Ensure proper operation of all top drive systems.

• Visually inspect the mud inlet piping.

• Check all wire-locked bolts for damaged or broken wires. If broken wires are detected, check the affected bolts for tightness and rewire. Refer to the Capscrew Torque Values information in Subsection 4A of this Manual. Replace damaged wires.

• Check all external bolts that are not wired for tightness.

• Check all guards, vents, and covers for tightness.

• Ensure that all safety cables are properly and securely attached.

• Visually check the welds on the Top Drive Guard and Frame, Blower Frame and Torque Guide System.

• Visually examine inside the electrical junction boxes for loose components.

• Inspect the motor armature to ensure it has not dropped:

• If the Brake Disk is approximately in the center of the Caliper, then this maybe an indication that the armature did not drop.

• If the Brake Disk is rubbing on the bottom of the caliper, this maybe an indication that the armature did drop.



Wear Limits

Load Path components are designed to meet the safety factors outlined in the API Specification 8C for certain load capacities. As the components wear, the load rating may have to be de-rated to maintain the proper API 8C safety factors. The following are the wear limits for the load path components:

• The nominal load rating is maintained if the wear is less than 5% for all load path components of the top drive with the exception of the Link Support. The wear limit for the link support is 10% without the need to reduce the nominal load rating.

• The nominal load rating must be reduced by 5% if the wear is between 5% and 10%

for all load path components of the top drive with the exception of the Link Support. The link support load rating must be reduced by 5% if the wear is 10% to 15%.

• Canrig engineering must be contacted if the wear is above 10% for all load path

components other than the link support and above15% on the link support to get the proper load rating.

• Sheave groove wear as outlined in API 9B.



Fig. 1 Fig. 2

INSPECTION INDICATION MAP №: Part Name: Main Housing

The following information should be supplied on the Inspection Report as a minimum: Purchase Order # Date: Inspection Report # Canrig Part # Inspector’s Signature/Stamp: Load Path/ Serial # Type of Inspection: Rated Load: Canrig Representative:

Procedure: Perform Wet Fluorescent Magnetic Particle inspection on 100% of the casting and machined areas in accordance with ASTM E709. Acceptance criteria are as defined in API 8C PSL 2. All areas shall be visually examined for damage and signs of fatigue.



Fig. 1 Fig. 2

INSPECTION INDICATION MAP №: Part Name: Spindle


Procedure: Perform Wet Fluorescent Magnetic Particle Inspection on areas shown in accordance with ASTM E709. Acceptance criteria are as defined in API 8C. All other areas not indicated shall be visually examined for damage and signs of fatigue.

Wet Fluorescent Magnetic Particle Entire Area

Wet Fluorescent Magnetic Particle Entire Area Between Arrows



Fig. 1 Fig. 2

INSPECTION INDICATION MAP №: Part Name: Split Ring



WF MPI 100%

WF MPI 100%



Fig. 1 Fig. 2

INSPECTION INDICATION MAP №: Part Name: Quill


Procedure: Perform Wet Fluorescent Magnetic Particle Inspection on areas shown in accordance with ASTM E709.Acceptance criteria are as defined in API 8C. All other areas not indicated shall be visually examined for damage and signs of fatigue.

Wet Fluorescent Magnetic Particle Areas Indicated with Arrows

Wet Fluorescent Magnetic Particle Areas Indicated with Arrows



Fig. 1 Fig. 2

Fig. 3 Fig. 4

INSPECTION INDICATION MAP №:

Part Name: Upper Link Support The following information should be supplied on the Inspection Report as a minimum: Purchase Order # Date: Inspection Report # Canrig Part # Inspector’s Signature/Stamp: Load Path/ Serial # Type of Inspection: Rated Load: Canrig Representative:

Procedure: Perform Wet Fluorescent Magnetic Particle inspection 100% of the casting and machined areas in accordance with ASTM E709. Acceptance criteria are as defined in API 8C PSL 2. All areas shall be visually examined for damage and signs of fatigue.



Fig. 1 Fig. 2

INSPECTION INDICATION MAP №: Part Name: Outer Sleeve

The following information should be supplied on the Inspection Report as a minimum: Purchase Order # Date: Inspection Report # Canrig Part # Inspector’s Signature/Stamp: Load Path/ Serial #

Type of Inspection: Rated Load: Canrig Representative:


WF MPI ENTIRE CIRCUMFERENCE OF COLLAR

WF MPI ENTIRE AREA BETWEEN ARROWS



Fig.1 Fig.2

INSPECTION INDICATION MAP №: Part Name: Upper Link Pin

The following information should be supplied on the Inspection Report as a minimum:

Purchase Order # Date: Inspection Report # Canrig Part # Inspector’s Signature/Stamp: Load Path/ Serial # Type of Inspection: Rated Load: Canrig Representative:

Procedure: Perform Wet Fluorescent Magnetic Particle Inspection on areas shown in accordance with ASTM E709. Acceptance criteria are as defined in API 8C.

WF MPI 100%

WF MPI 100%



Fig. 1 Fig. 2

INSPECTION INDICATION MAP №: Part Name: Upper Link



WF MPI BORE AND SURROUNDING AREA







Part Name: Bail The following information should be supplied on the Inspection Report as a minimum:







WF MPI 100% RADIUS

WF MPI 100% RADIUS




Part Name: Mudline The following information should be supplied on the Inspection Report as a minimum:


Procedure: 1. Check minimum of wall thickness. 2. If it passes, then perform Magnetic Particle inspection accordance with ASTM E709.



INSPECTION INDICATION MAP No: Part Name: Torque Guide Skid/Section 1

The following information should be supplied on the Inspection Report as a minimum: Purchase order # Date: Inspection Report # Canrig Part # Inspector’s Signature/Stamp: Top Drive S/N: Type of Inspection: Canrig Representative:

Procedure: Perform Dry Magnetic Particle Inspection on all welds shown in accordance with ASTM E709. Acceptance criteria are as defined in E709. All other areas not indicated shall be visually examined for damage and signs of fatigue.



INSPECTION INDICATION MAP No:

Part Name: Torque Guide Live Roll


Procedure: Perform Dry Magnetic Particle Inspection on all welds shown in accordance with ASTM E709. Acceptance criteria are as defined in ASTM E709. All other areas not indicated shall be visually examined for damage and signs of fatigue.




Part Name: Torque Guide Section 2












Part Name: Torque Guide Section 3/Service Support Frame


















Part Name: Torque Guide Pin


Procedure: Perform Die Penetrant Inspection on the entire pin (including the weld) in accordance with ASTM E165. Acceptance criteria are as defined in ASTM E165.




Part Name: Harpoon






Part Name: Top Drive Frame






Part Name: Top Drive Guard


Procedure: Perform Dry Magnetic Particle Inspection on all in accordance with ASTM E709. Acceptance criteria are as defined in ASTM E709. All other areas not indicated shall be visually examined for damage and signs of fatigue.




Part Name: Blower Frame





Main Bearing End Play

Inspection Procedure 1. Remove the washpipe. 2. Place the base of the dial indicator on top of the upper seal carrier (or side of the

bonnet) and the plunger on the top of the upper seal ring (Fig. 4.5.2 and 4.5.3). 3. Load the end of the quill against the top and bottom of its free travel.

(NOTE: Quill travel = 8 inches) 4. Read the end play on the dial. (Desired end play = 0.002/0.004 inches) 5. To adjust this end play, add or remove shims between the upper bearing seat and the

main housing. 6. If the gear case oil becomes contaminated, the gear case should be flushed and the oil

changed. The end play should be checked before resuming drilling activities. This may reveal indications of premature bearing wear.

Figure 4.5.1

MODEL SHIM PART # INSPECTION FREQUENCY

4017AC DT12889 2 – 3 months

6027E, 6027AC 966-26-1 2 – 3 months

8035E, 1035E 681-11-1 4 – 6 months

1050E, 1250AC 681-11-1 4 – 6 months

1165E, 1265AC 681-11-1 4 – 6 months

1275AC 681-11-1 4 – 6 months



Figure 4.5.2

Figure 4.5.3



Washpipe Inspection Instructions Packing Assembly

Instructions: 1. Attach magnetic indicator base or improvised holding fixture to quill or packing box. 2. Rotate sleeve 360° and record total indicator reading (TIR) indicator positions A, B, C. Recommended Tolerances: A. Maximum allowable misalignment at gooseneck support bore = 0.008’ TIR B. Maximum allowable misalignment at gooseneck pilot = 0.010” TIR C. Maximum allowable washpipe misalignment after complete assembly = 0.010” TIR Inspection may indicate misalignment exceeding recommended limits. Washpipe packing assemblies are designed to accommodate misalignments of quill to gooseneck and will operate with some excessive misalignment. However, to achieve maximum packing life, the alignment at the washpipe should be maintained within recommended limits.

A

B

C

Figure 4.6.1



Figure 4.6.2

Figure 4.6.3



Top Drive Disc Brake Inspection

Check Brake Fluid • Brake fluid reservoir should be visually checked on a daily basis.

• Sudden drop in oil level may indicate worn components. Be sure to only use mineral-based oil (i.e. hydraulic oil) in the brake system.

Check Brake Calipers • Brake calipers should be checked weekly.

• A function test should be done at this time.

• There should be a minimum gap of 0.06” between the brake pads and the disc.

• In addition to premature wear, dragging brake pads can also cause excessive heat build-up in the brake compartment.

• If the brake pads are dragging, the system may require bleeding to eliminate any trapped air. See Brake Bleeding Procedure.

Manual Brake Bleeding 1. The brake actuator should be bled first, and then the brake calipers. 2. Clean area around reservoir covers (2 on GE 752 and GE B20 motors, 1 on 761

motors). 3. Remove covers. 4. Fill reservoirs to indicated FULL level. Use only mineral base oil (hydraulic oil) in the

brake reservoirs. Do not use brake fluid. Replace reservoir cover(s) but leave loose. 5. Put the Top Drive selector switch in the AUX position and start the HPU. 6. Cycle the brakes several times by operating the Brake switch at the Top Drive Console. 7. With the brake on and the HPU running, loosen the bleed screw on the component until

there is no sign of air mixed with the oil. 8. Close the bleed screw. 9. Cycle the brake off and on. 10. Repeat the process until there is no air visible in the system. 11. Top off reservoirs to indicated FULL level and replace covers tightly.



Auto Brake Bleeding 1. Clean area around reservoir covers (2 on GE 752 and GE B20 motors, 1 on 761

motors). 2. Remove covers. 3. Fill reservoirs to indicated FULL level. Use only mineral base oil (hydraulic oil) in the

brake reservoirs. Do not use brake fluid. 4. Replace reservoir cover(s) but leave loose. If the cover is tightened the reservoir could

be damaged during bleeding. 5. Open ball valve(s) (1 per reservoir) on reservoir return lines. 6. Put the Top Drive selector switch in the AUX position and start the HPU. 7. Cycle the brakes several times by operating the Brake switch at the Top Drive Console. 8. Close the ball valve(s) on the reservoir return line. 9. Top off reservoirs and replace covers tightly. Ensure there is no air visible in the system.


SUBSECTION 4C: TROUBLESHOOTING

Hydraulic Troubleshooting ..................................................................................................... 4-66 Preliminary Procedure....................................................................................................... 4-67 Mud Saver Valve Flowchart 100-1 .................................................................................... 4-68 Handler Lock Flowchart 101-1 ........................................................................................ 4-69 Back-up Wrench Flowchart 102-1 ................................................................................... 4-70 Back-up Wrench Flowchart 102-2 ................................................................................... 4-71 Handler Rotate Flowchart 103-1 ..................................................................................... 4-72 Brake System Flowchart 104-1 ...................................................................................... 4-73 Brake System Flowchart 104-2 ...................................................................................... 4-74 Torque Boost Flowchart 105-1 ...................................................................................... 4-75 Back-up Wrench Gripper Flowchart 106-1 ..................................................................... 4-76 Back-Up Wrench Gripper Flowchart 106-2 ..................................................................... 4-77 Link Tilt Flowchart 107-2 ................................................................................................. 4-78 Link Tilt (with Counterbalance Valve) Flowchart 107-3 ................................................... 4-79 Link Support Counterbalance Flowchart 108-2 ............................................................... 4-80

Lube System Troubleshooting ............................................................................................... 4-81 Lube System Flowchart 109-1......................................................................................... 4-81

Top Drive Blower Troubleshooting......................................................................................... 4-82 Top Drive Blower Flowchart 110-1 .................................................................................. 4-82 Hydraulic Pressure: Flowchart 111-1 ................................................................................ 4-83



Hydraulic Troubleshooting Preliminary Procedure

1. Ensure pump is turned on and running at system pressure 2350 psi. (see note) 2. Ensure that there is power at the console. 3. Ensure that hydraulic lines are connected to the Top Drive. 4. Ensure that there is 2350 psi (see note) system pressure on the gauge at the Top Drive. 5. Ensure that there is 0 psi on the return pressure gauge at the Top Drive. 6. Read pressures at all applicable test points.

NOTE: Pressures on individual Top Drive systems may vary. Consult the Hydraulic Drawings in the Drawings and Parts List section for exact pressures.

Subsection 4C: Troubleshooting


Mud Saver Valve: Flowchart 100-1 Problem: Valve will not open or close.

IS ACTUATOR SHAFT TURNING WHEN SWITCH IS

ACTIVATED?

ARE SEALS LEAKING ON

ROTARY ACTUATOR?

IS SOLENOID VALVE

SHIFTING WITH SWITCH?

INSERT GAUGES ON TEST POINTS A & B, IS THERE

1500PSI ON GAUGE WHEN VALVE IS

ACTIVATED? REMOVE COUPLING BETWEEN VALVE AND ACTUATOR,

TURN VALVE MANUALLY, IS

VALVE SEIZED?

WILL VALVE ADJUST TO

1500 PSI?

DOES ACTUATOR

WORK?

DETACH HOSE AT ACTUATOR. IS THERE FLOW WHEN VALVE IS

ACTIVATED?

IS ACTUATOR FUNCTIONING

BUT SHAFT NOT

TURNING?

ADJUST PRESSURE

RELIEF VALVE SO PRESSURE IS

1500 PSI WHEN ACTUATOR IS

STOPPED

REPAIR BALL

VALVE

PROBLEM SOLVED

CONSULT CANRIG SERVICE

DEPARTMENT

REPAIR SEAL

CHANGE VALVE

CHECK FOR CRIMPED LINES, BLOCKAGE,ETC.

ELECTRICAL CONNECTION,

WIRING / SOLENOID PROBLEM

REPAIR MECHANICAL CONNECTION TO

ACTUATOR SHAFT

TRY MANUAL OVERRIDE,

DOES ACTUATOR

WORK?



Handler Lock: Flowchart 101-1 Problem: Lock Pin will not engage or disengage.

CHECK POWER AT PANEL, CONSOLE.

IS THERE A MECHANICAL

PROBLEM? IS THE PIN PHYSICALLY

JAMMED?

FREE PIN

IS THE SOLENOID

VALVE SHIFTING WITH THE SWITCH?

INSERT GAUGES ON TEST POINTS A & B

IS THERE 1200 PSI ON BOTH WHEN IN LOCK

POSITION AND ON B IN UNLOCK POSITION?

DETACH HOSE AT CYLINDER, IS

THERE FLOW FROM A & B IN LOCK AND

UNLOCK POSITION?

ARE SEALS LEAKING ON CYLINDERS?

DOES LOCK PIN WORK ?

CHECK FOR CRIMPED

LINES, BLOCKAGE,

ETC.

CONSULT CANRIG SERVICE

DEPARTMENT

REPLACE SEALS

WIRING CONNECTION OR

SOLENOID PROBLEM

CHANGE OUT VALVE SET

PRESSURE TO 1200 PSI

PROBLEM SOLVED

ADJUST PRESSURE RELIEF VALVE SO PRESSURE IS 1200

PSI WILL VALVE ADJUST TO 1200

ELECTRICAL CONNECTION OR

WIRING/ SOLENOID PROBLEM. IS

THERE POWER AT VALVE?

TRY MANUAL OVERRIDE, DOES PIN

SHIFT?



Back-up Wrench: Flowchart 102-1 Problem: Back-up wrench will not move up or down.

LEAKING SEAL IN ROTARY MANIFOLD, CONSULT CANRIG

SERVICE DEPARTMENT

IS THE SOLENOID VALVE SHIFTING

WITH THE SWITCH?

IS THERE A MECHANICAL PROBLEM? IS THERE

SOMETHING JAMMED? DID THE CYLINDER COME

UNPINNED?

CORRECT PROBLEM

DO OTHER FUCNTIONS MOVE WHEN

VALVE IS ACTIVATED?

INSERT GAUGES ON TEST POINTS A & B, IS

THERE PRESSURE ALTERNATELY WHEN

THE VALVE IS ACTIVATED UP/ DOWN?

TURN UP PRESSURE ON RELIEF VALVES OR CHANGE OUT

FAULTY OR JAMMED RELIEF VALVE, DOES

WRENCH MOVE?

INSERT GAUGES ON TEST POINTS ON

ROTARY MANIFOLD (SEE SCHEMATIC) IS THERE PRESSURE WHEN THE VALVE IS ACTIVATED?

PLUG LINES TO HYDRAULIC

CYLINDER, IS THERE PRESSURE ON TEST POINT?

CHECK FOR BLOCKED OR

CRIMPED LINES TO ROTARY SEALS. DO

ALL LINES HAVE FLOW?

TRY MANUAL OVERRIDE ON DIRECTIONAL VALVE DOES

CYLINDER MOVE?

DOES THIS PRESSURE

APPROXIMATE PRESSURES ON A & B TEST POINTS

(+ 50 PSI)

WITH PRESSURE @1500 PSI AND FLOW TO CYLINDER, BACK-UP WRENCH SHOULD

TRAVEL UP/ DOWN. PROBLEM MAY BE A PLUGGED FITTING OR AN INTERNAL CYLINDER PROBLEM, REMOVE AND

REPAIR.


SOLENOID PROBLEM





PROBABLY LEAKING SEAL ON CYLINDER.

BACK-UP WRECH

SHOULD BE FULLY

EXTENDED IN THIS CASE.

REPAIR PISTON SEAL.

REPAIR OR

REPLACE LINES.

LEAKING ROTARY SEAL CONSULT

CANRIG SERVICE DEPARTMENT.

PROBLEM SOLVED



REVERSE HOSES TO UP/ DOWN

CYLINDER. DOES CREEP STOP?

DOES BACK-UP WRENCH MOVE IN

OPPOSITE DIRECTIONS?

Back-up Wrench: Flowchart 102-2 Problem: Back-up Wrench (BUW) moves up and down or does not hold when

the BUW Joystick is in the MAINTAIN position. NOTE: A small amount of downward creeping is normal.

RELIEF VALVE MAY BE SET TOO LOW OR MAY BE DAMAGED.

TRY TO SET HIGHER OR REPLACE.

IF CYLINDER IS EXTENDING, POSTON

SEALS MAY BE LEAKING. REPAIR

CYLINDER.

POSSIBLE LEAK IN ROTARY SEAL.

CONSULT CANRIG TECHNICIAN.



IS HANDLER

UNLOCKED?

EXAMINE GEAR ASSEMBLY. IS

KEY, HUB, GEAR, ETC. IN

PLACE?

IS THE SOLENOID


TRY MANUAL OVERRIDE ON DIRECTIONAL VALVE. DOES

MOTOR ROTATE?

OPEN UP FLOW CONTROLS. HAS FLOW

INCREASED AT HOSES?

DETACH 1 HOSE & CHECK LEAKAGE THRU MOTOR. IS

LEAKAGE EXCESSIVE?

REPLACE OR REPAIR PARTS AS REQUIRED.

DOES HANDLER ROTATE?

INSERT GAUGES ON TEST POINTS A & B. IS THERE SYSTEM

PRESSURE ON GAUGE WHEN VALVE

IS ACTIVATED?




RECONNECT HOSES AND

ACTIVATE VALVE, DOES HANDLER

ROTATE?

DETACH HOSES AT MOTOR. IS THERE FLOW

WHEN VALVE IS ACTIVATED?

Handler Rotate: Flowchart 103-1 Problem: Pipe Handler assembly will not rotate.

UNLOCK HANDLER.

CHANGE OUT

MOTOR.

WIRING CONNECTION OR SOLENOID

PROBLEM.

CHECK POWER AT PANEL CONSOLE.

CHECK FOR CRIMPED LINES, BLOCKAGE, ETC.

CHECK DIRECTIONAL

VALVE OR LINES TO MANIFOLD.

PROBLEM SOLVED

PROBLEM SOLVED

TRY LOCKING BACK-UP WRENCH ON QUILL NAD TURNING TRACTION MOTOR. THIS MAY FREE JAMMED ROTARY

SEAL. AMPS REQUIRED TO ROTATE SHOULD BE LOW. IF EXCESSIVE, MAY BE INTERNAL MACHANICAL PROBLEMS.

CONSULT CANRIG SERVICE DEPARTMENT.



IS THE SOLENOID VALVE SHIFTING

WITH THE SWITCH?

DOES RESERVOIR HAVE OIL?


BRAKE COME ON?


WIRING/ SOLENOID PROBLEM. IS THERE POWER AT VALVE?

FILL RESERVOIR

IS THERE LEAKAGE AT

CALIPER?

DOES BRAKE COME OUT?

DETACH CYLINDER, IS

CYLINDER FUNCTIONING

WHEN ACTIVATED?

DOES BRAKE

SYSTEM BLEED?

IS BRAKE AUTO BLEED

VALVE CLOSED?

Brake System: Flowchart 104-1 Problem: Brake will not come on.

BLEED BRAKE

SYSTEM

CHECK FOR WORN PADS

OR BAD SEALS.


SOLENOID PROBLEM.


CHECK FOR WORN SEALS, (OIL BYPASSING) LINE

BLOCKAGE (FLOW)

CHECK FOR LEAKING SEALS IN BRAKE ACTUATOR. LINES

BLOCKED TO BRAKE.

PROBLEM SOLVED

CLOSE VALVE



IS THE SOLENOID VALVE STAYING

ON?

IS CYLINDER

RETRACTING?

REMOVE CYLINDER, IS ACTUATOR

PISTON RETRACTING?

IS THERE

PRESSURE AT CALIPERS?

ARE

CALIPERS SEIZED?

WHEN PRESSURE IS BLED OFF, DO CALIPERS OPEN?

Brake System: Flowchart 104-2 Problem: Brake will not release.

CHECK FOR BLOCKED OR CRIMPED LINES.

REMOVE AND REPAIR CALIPERS.

REMOVE ACTUATOR AND REPAIR.

CHECK PRESSURE ON LINES, CHECK FLOW, CHECK SEALS ON CYLINDER.

CHECK FOR SHORT IN THE WIRING.



IS THE CLUTCH SOLENOID



CLUTCH ENGAGE?

INSTALL TEST GAUGES ON CLUTCH

TEST POINTS. DO YOU HAVE 500 PSI

ON “A” WHEN VALVE OFF & 500 PSI ON “B”

WHEN VALVE ON?


WIRING/ SOLENOID PROBLEM. IS THERE POWER AT VALVE?

ADJUST PRESSURE REDUCING

VALVE TO 500 PSI. CAN YOU GET 500 PSI?

OPEN VIEW HOLE IN

GEARCASE. CAN YOU SEE GEAR

TURNING?

OPEN VIEW HOLE IN BELL HOUSEING. CAN

YOU SEE CLUTCH/ JAW ROTATE WHEN

ENGAGED AND WHEN TORQUE SWITCH IS

ACTIVATED?

OPEN VIEW HOLE IN BELL HOUSING. CAN

YOU SEE CLUTCH ENGAGE WHEN

CLUTCH SWITCH IS ACTIVATED?

IS THE ROTATE SOLENOID


TRY MANUAL OVERRIDE ON DIRECTIONAL

VALVE. DOES THE CLUTCH ENGAGE?

Torque Boost: Flowchart 105-1 Problem: No torque applied to the quill when Torque Boost is engaged.

INSTALL TEST GAUGES ON TORQUE BOOST TEST POINTS. DO YOU HAVE

2300 PSI ON “B” & 1075 PSI ON “A” WHEN VALVE

ACTIVATED TO BREAKOUT/ MAKE-UP? (*1)

ADJUST PRESSURE REDUCING /OR RELIEF VALVES TO ACHIEVE

REQUIRED PRESSURES. CAN YOU GET REQUIRED

PRESSURE? (*2)

GEAR MAY BE SLIPPING ON

SHAFT. REMOVE TORQUE BOOST ASSEMBLY AND

REPAIR.

IF CLUTCH ENGAGES BUT

WILL NOT ROTATE, CHECK HYDRAULIC

MOTOR/ GEAR REDUCER FOR

DAMAGE.

CHANGE PRESSURE RELIEF/ RELIEF

VALVES. CHANGE OUT HYDRAULIC

MOTOR.

WIRING CONNECTION OR SOLENOID

PROBLEM.

CHECK POWER AT PANEL CONSOLE.

CHECK SEALS ON PISTON REPLACE

PRESSURE REDUCING VALVE.

*1 To achieve these pressures, TB must be turning against resistance, i.e: against back-up wrench. Otherwise, hoses must be disconnected and plugged.

*2 Consult hydraulic schematic in the parts manual, section 6 for valves and pressure settings.



IS SOLENOID VALVE SHIFTING WHEN SWITCH IS

ACTIVATED?

DO YOU HAVE 1000 PSI ON

TEST POINTS ON THE

ROTARY SEAL?

INSERT GAUGES ON TEST POINTS A & B. DO YOU HAVE 1000

PSI ON EXTEND PORT “B” WITH SOLENOID

SHIFTED? (*1)


GRIPPER CLOSE?



THERE POWER AT VALVE

CHANGE OUT P.O. CHECK CARTRIDGE,

DOES GRIPPER CLOSE?

DISCONNECT RETRACT

HOSE. IS THERE FLOW FROM CYLINDER?

MAY BE INTERNAL LEAKAGE IN ROTARY SEAL. IS THERE ANY

PRESSURE ON PASSAGES NEXT TO EXTEND PASSAGE

WITH PRESSURE WHEN IT SHOULD BE ZERO?

DO YOU HAVE 1000 PSI ON

RETRACT PORT “A” WITH

SOLENOID NOT SHIFTED? (*1)

TRY TO INCREASE PRESSURE ON

PRESSURE RELIEF VALVE. WILL PRESSURE INCREASE?

Back-Up Wrench Gripper: Flowchart 106-1 Problem: Back-Up Wrench Gripper will not close.


SOLENOID PROBLEM.

SEALS MAY HAVE TO BE REPLACED ON PISTON.

MAY BE INTERNAL DAMAGE TO GRIPPER. REMOVE & REPLACE GRIPPER CYLINDER.

DOES GRIPPER CLOSE?

PROBLEM SOLVED

PROBLEM SOLVED

OVERHAUL ROTARY

SEAL.


CHANGE OUT PRESSURE

RELIEF VALVE.

*1. Pressure may vary, consult hydraulic schematic Section 6, Parts for actual pressure settings.



IS THERE

MECHANICAL JAMMING?

IS SOLENOID VALVE SPRING RETURNING TO

PROPER POSITION?(*1)

INSTALL GAUGES ON TEST POINTS ON

ROTARY SEAL. DOES A=2000 PSI,

B=0? (*3)

CHANGE OUT P.O. CHECK

CARTRIDGE, DOES GRIPPER OPEN?

DOES

GRIPPER OPEN?

INSTALL GAUGES ON TEST POINTS A & B. DOES A=2000 PSI,

B=0? WITH VALVE ACTIVATED, DOES

B=2000 PSI, A=0? (*3)

ADJUST PRESSURE RELIEF VALVE UNTIL WORKING PRESSURE

= 2000 PSI. DOES PRESSURE INCREASE?

IF RETURN SIDE PRESSURE DOES NOT

EQUAL 0 PSI THERE MAY BE LEAKAGE ACROSS SEALS. DISCONNECT

EXTEND HOSE BETWEEN ROTARY SEAL &

GRIPPER CYLINDER. IS THERE FLOW THERE WHILE CYLINDER IS

STATIONARY?

Back-Up Wrench Gripper: Flowchart 106-2 Problem: Back-up wrench gripper will not open.

MAY BE DAMAGE INTERNAL TO GRIPPER.

REMOVE & REPLACE GRIPPER CYLINDER.

REMOVE & REPLACE

PRESSURE RELIEF VALVE.

REMOVE & REPLACE SOLENOID VALVE.

TAKE APPROPRIATE ACTION.

REMOVE & REPLACE PISTON SEALS.

MAY BE A LEAKING ROTARY SEAL. REMOVE & REPLACE (*2)

PROBLEM SOLVED

*1 – Install test points on A & B on manifold. B should read 1800 PSI when valve is actuated, A=0. With valve returned to spring position, (solenoid OFF) A should read 1800 PSI, B=0.

*2 – A temporary hose can be from valve bank to gripper cylinder to open the cylinder. Be cautious when rotating handler. *3 – Pressure may vary, consult Hydraulic Schematic in the Drawings and Parts List section for actual pressure settings.



INSTALL TEST POINT “A” PORT ON

MANIFOLD, INCREASE PRESSURE ON THE

RELIEF VAVLE. DOES LINK TILT RETRACT

FULLY?

LOAD MAY BE TOO GREAT FOR

CYLINDERS. DO LINKS RETRACT FULLY WITH

NO LOAD?

INSTALL TEST POINT GAUGES ON POINTS

AT ROTARY MANIFOLD. DOES THE PRESSURE READ THE SAME AS AT “A” & “B”?

Link Tilt: Flowchart 107-2 Problem: Link Tilt will not retract fully. (Serial Number 007 and up)

MAY BE LEAKING IN THE ROTARY

MANIFOLD. REMOVE & REPLACE.

PROBLEM SOLVED

PROBLEM SOLVED



DOES LINK TILT

RETRACT FULLY?

CHECK PRESSURE ON TEST POINTS AT MANIFOLD. IS

PRESSURE ABOUT 2500 PSI?

ARE PISTON SEALS ON CYLINDERS

WORN OR LEAKING?

REPLACE OR REPAIR DOES LINK TILT

CREEP?

PRESSURE RELIEF VALVE SETTING IS

TOO LOW, TURN UP PRESSURE. DOES

LINK TILT STILL CREEP DOWN?

TURN UP SETTING

ON COUNTER BALANCE VALVE. DOES LINK TILT

CREEP?

Link Tilt (with Counterbalance Valve): Flowchart 107-3 Problem: Link Tilt creeps down with the Link Tilt Joystick in the MAINTAIN position. NOTE: Minor creeping is normal.

LINK TILT FLOAT DIRECTIONAL VALVE

MAY BE LEAKING. REPLACE OR REPAIR.

SEALS IN ROTARY MANIFOLD MAY BE

LEAKING, CHECK AT NEXT OVERHAUL.

PROBLEM SOLVED

PROBLEM SOLVED

PROBLEM SOLVED



INSTALL A GAUGE ON TEST POINT “A” AT THE HYDRAULIC

MANIFOLD. IS THERE 1700 PSI ON THE

GAUGE?

TRY TURNING IN THE PRESSURE

REDUCING VALVE. DOES THE PRESSURE INCREASE?

THE RELIEF VALVE MAY BE SET TO LOW. TURN IN THE RELIEF

VALVE. DOES THE PRESSURE INCREASE?

REPLACE THE PRESSURE

REDUCING VALVE. DOES THE PRESSURE INCREASE?

INSTALL A GAUGE ON THE TEST POINT

AT THE ROTARY MANIFOLD. IS THERE

1700 PSI ON THE GAUGE?

CHECK FOR BLOCKED OR

CRIMPED HYDRAULIC LINES. ARE ALL LINES OK?

Link Support Counterbalance: Flowchart 108-2 Problem: Link Support will not ride up when there is no load on the elevators.

REPLACE THE PRESSURE RELIEF

VALVE.

SET THE PRESSURE RELIEF VAVLE @ 2100 PSI. SET THE

PRESSURE REDUCING VAVLE @ 1700 PSI. DOES THE LINK

SUPPORT EXTEND?

CHECK THE LINK SUPPORT FOR MECHANICAL JAMMING. CHECK THE CYLINDERS FOR DAMAGE.

THERE MAY BE A LEAK IN THE ROTARY MANIFOLD SEALS.

REPLACE THE SEALS.

PROBLEM SOLVED

PROBLEM SOLVED

PROBLEM SOLVED



IS THERE PRESSURE

SHOWING ON THE LUBE PRESSURE GAUGE? +30 PSI

IS THE ELECTRIC MOTOR ON THE PUMP TURNING?

CHECK THE COUPLING

BETWEEN PUMP MOTOR. IS

COUPLING OK?

ENSURE BALL VALVE IS OPEN ON THE

SUCTION EXAMINE STRAINER FOR

BLOCKAGE. IS OIL FLOWING TO THE

PUMP?

IS THERE POWER GOING

TO THE MOTOR?

Lube System: Flowchart 109-1 Problem: Low Lube Pressure Light (PL7) comes on.

PUMP MAY NEED REPLACING.

CHECK PLUG, BREAKERS &

WIRING.

PRESSURE SWITCH MAY NEED ADJUSTING. ADJUST

TILL LIGHT GOES OUT.

REPLACE MOTOR.

REPAIR OR REPLACE COUPLING.

LINES MAY BE BLOCKED OR THERE IS

INSUFFICIENT OIL IN GEARBOX.



IS THERE A VISUAL OR PHYSICAL

INDICATION OF AIR COMING OUT OF

MOTOR?

IS THE AIR DUCT HOSE ATTACHED

FROM BLOWER TO MOTOR?

IS THE AIR HOSE

DAMAGED (COLLAPSED OR

HOLES)?

IS THE BLOWER

TURNING?

IS THERE POWER TO THE BLOWER

MOTOR?

Top Drive Blower: Flowchart 110-1 Problem: Top Drive Low Air Light (PL5) comes on.

EXAMINE BLOWER FOR PROBLEMS, BLOCKED

INLET OR OUTLET, LOOSE IMPELLAR

CHECK PLUGS, BREAKER & WIRING.

REPAIR OR REPLACE AS REQUIRED.

ATTACH HOSE WHERE REQUIRED.

AIR PURGE SWITCH MAY NEED ADJUSTING OR LINE TO

SWITCH MAY BE BLOCKED.

BLOWER MOTOR MAY NEED REPLACING.



DOES IT HAPPEN

WITH PUMP 1 AND 2?

IS SYSTEM

PRESSURE 2350 PSI AT THE HPU?

IS SYSTEM

PRESSURE 2350 PSI AT THE HPU?

IS PRESSURE AT

TOP DRIVE 2350 PSI?

Hydraulic Pressure: Flowchart 111-1 Problem: Low hydraulic pressure (700 PSI) on Top Drive gauge.

ISOLATE HPU FROM SYSTEM. DISCONNECT QC AT HPU.

RECONNECT HPU. DISCONNECT QC AT HPU.

RECONNECT QC ON TD PRESSURE ONLY. RETURN IS DISCONNECTED.

CHECK FOR PINCHED HOSE OR BLOCKAGE ON TD UNIT.

CHECK RELIEF VALVE ON LINK COUNTERBALANCE CIRCUIT.

CHECK HYDRAULIC SERVICE LOOP OR LOOK FOR DAMAGED HOSE.

CHECK HPU RELIEF VALVE.

CHECK OUT PUMP WITH LOW PRESSURE.





Documents

SECTION 4: MAINTENANCE AND ERVICE