s05 Boom b26f b26xlf

B26 F - B26XL F BOOM

Page 1

SANDVIK TAMROCK SECOMA S.A.S19 avenue De Lattre-de-Tassigny - ZIB.P. 46 - 69881 MEYZIEU CedexTel : (33) 472 45 22 00 Fax : (33) 478 31 79 80

MAINTENANCE MANUAL

Page 2 E-04-07-2005 SR-MC-FLB26 F - B26XL F BOOM


1 PRELIMINARY REMARKS 3

1/1 SAFETY 3

1/2 ABOUT THIS BOOKLET 5

2 DESCRIPTION 6

2/1 EXPLANATION 6

2/2 FEATURES 6

2/3 MAIN COMPONENTS 7

3 MAINTENANCE OPERATIONS 8

3/1 FIRST ENTRY INTO SERVICE 8

3/2 OPERATIONS AT EACH SHIFT 8

3/3 50-HOURS OR WEEKLY OPERATIONS 8

3/4 200-HOURS OPERATIONS 9

3/5 1200-HOURS OR ANNUAL OPERATIONS 9

3/6 3600-HOURS OPERATIONS OVERALL INSPECTION AND RECONDITIONING 9

4 TIGHTENING TORQUES 10

5 LUBRICATION 11

6 OPERATING METHODS 12

6/1 REMOVING AND REFITTING A EXPENDABLE PIN SET. 12

6/2 CHECKING CYLINDER EXPENDABLE PIN 13

6/3 REMOVING AND REFITTING A CYLINDER 14

6/4 REMOVING AND REFITTING A BOOM ASSEMBLY 14

6/5 REMOVING AND REFITTING ROTARY ACTUATOR 15

7 CHECK AND ADJUSTMENT 15

7/1 HOSE CONDITION CHECK 15

7/2 CHECK WELDING CONDITION USING CRACK DETECTOR PRODUCTS 15

7/3 CONTROL/ADJUSTMENT OF CLEARANCE BETWEEN ARMATURE AND EXTENSION TUBE 16

7/4 CONTROL THE WEAR OF THE EXTENSION TUBE 17

7/5 DISMANTLE THE BOOM EXTENSION CYLINDER 17

8 LIFTING - HANDLING 18

9 PERIODIC MAINTENANCE TABLE - B26 F AND B26XL F BOOM 19

Page 3E-04-07-2005 SR-MC-FL B26 F - B26XL F BOOM


1 PRELIMINARY REMARKS

1/1 SAFETY

The informations contained in this manual must be studied and thoroughly assimilated before

undertaking any maintenance work on the equipment

WARNING Operation, maintenance and adjustments are only allowed to persons withspecific training in operation and maintenance of the equipment. Read the operatingand maintenance instructions before using or servicing the equipment.

WARNING: Before starting any maintenance operation ensure that the machine is in asafe location with good safety, ventilation and lighting conditions. Ensure that liftingequipments and pedestals are compatible with elements’ weight. Follow all the safetyinstructions and ware safety protections as gloves, goggle, helmet, safety boots, earprotectors.

WARNING: Before any operation stabilize and fix steadily all the elements on suitablepedestals. Stop the power packs, switch the general power breaker. Place a tag or aboard to warn other members of the personnel that maintenance work on the machineis in progress.

WARNING: Pressurized oil jets could cause severe injuries. Before any operation onhydraulic circuit, STOP the power packs and release remaining pressure incomponents by operating hydraulic control levers several times. Always release thestatic pressure in cylinders before disassemble them.NEVER WORK ON AN OPERATING CIRCUIT.

WARNING: While tests are in progress, do not allow any other member of thepersonnel to stand in the area surrounding the machine. Stay at the control station tobe able to stop the movement and switch off the power pack.

WARNING: Maintenance, adjustment and repairs are restricted to qualified personnelwith special training for the particular equipment. Always read the instructions carefullybefore starting any maintenance work.

CAUTION: Always use suitable tools and work in a clean place when dismantling andassembling hydraulic components. After removing cylinders the hydraulic inlet/outletports must be plugged to prevent dirt and air intrusion during operation.

WARNING: The operator must always wear required personal protection, such as safetyhelmet, protective overall, safety boots, hearing protectors, safety goggles etc.

WARNING: Danger of high pressure oil jets.High pressure oil jets can cause serious personal injuries.Release the pressure in the hydraulic circuits before opening caps or connections.(Accumulator, Cylinder and Hydraulic circuit)

Remember: SAFETY FIRST!Always observe the warnings accompanied by the following symbols.

WARNING

WARNING

WARNING

WARNING

WARNING



WARNING: Danger of hot surface.Hot surface can cause serious injuries.Components rod, shank or hydraulic component can be hot and beforestarting a maintenance work, please let them cool off. The operator must have adequate wears as gloves.

WARNING: Crushing hazard : do not stay in dangerous area, for instance: centralarticulation, front chassis and rear chassis.

WARNING

SAFETY

Do not attempt any such repairs or adjustments that you do not fullyunderstand.

ABOUT THE SAFETY OF REPAIRS

Certain workstages require the use of the feed mechanism during the repair.Make sure then that:

- no danger is caused to anybody.- the machine can be immediately stopped when necessary.- the powerpack is stopped again before the repair-work is continued.

Before starting any repair-work move away from the area where you have justdrilled.

Use proper tools.

Always wear protective clothing, eye protection, earmuffs, safety footwear, andother safety equipment required by the work.

Always follow the marked safety instructions, andobserve caution while working.

The following safety instructions are general rules.

Keep tools and drillingequipment clean.



1/2 ABOUT THIS BOOKLET

The present manual is destined for the use of personnel in charge of carrying out, servicing and maintenance operations on Jumbos.

It contains maintenance operations schedule and operating methods concerning the main elements of

the B26 F - B26XL F BOOM.

Note that servicing and maintenance operations must be carried out by personnel with the required

qualifications, technical knowledge, and proper training on the machine.



2 DESCRIPTION

2/1 EXPLANATION

B26 F - B26XL F BOOM are multidirectional and telescopic booms fitted with an hydraulic parallelism

system. They can be used for face, wall, roof or floor drilling and for initiating cross-cuts, by swinging

the drill feed through a combination of 8 movements.

B26 F boom can extend with a 1200mm translation ( motion 3 ).

B26XL F boom can extend with a 1700mm translation ( motion 3 ).

2/2 FEATURES

SEE ENCLOSED TECHNICAL DATA SHEET.

1

2

3

4 5

6

78



2/3 MAIN COMPONENTS

The boom is fixed to the chassis by the boom swing cradle 1.

The extension tube 8 slides in the armature tube 4 driven by the cylinder situated inside the armature.

The boom movements are controlled by the cylinders 2 and 3.

The rotation of the drill feed in relation to the boom’s axis is make wiht the rotary actuator 5 allows 360..

The drill feed support 7 is fitted with a feed cylinder 6. The cylinder 9 makes the divergency movement.

Hydraulic parallelism system enable to keep a constant drill feed’s direction while swinging the boom

on both vertical and horizontal motions. Parallelism by a vertical plane is obtained with an hydraulic link

between the master lifting cylinder 3 and the slave cylinder 10.

Parallelism by a horizontal plane is obtained with an hydraulic link between the master cylinder 11 and

the slave cylinder 12.

NOTE: The master cylinder 11 is not powered, its purpose is only to acquire boom swinging

movements and keep parallelism.

The articulations are featured with adjustable expendable pin sets.

12

3

5

67

8

9

4

10 11

12



3 MAINTENANCE OPERATIONS

CAUTION: The safety of users and the reliability of the boom depend on the maintenance operations

and imply the use of genuine SANDVICK TAMROCK SECOMA spare parts.

All defective parts must be immediately replaced.

WARNING: Maintenance, adjustment and repairs are restricted to qualified personnel with special training for the particular equipment. Always read the instructions carefully before starting any maintenance work.

WARNING: While tests are in progress, do not allow any other member of the personnel to stand in the area surrounding the machine. Stay at the control station to be able to stop the movement and switch off the power pack.

3/1 FIRST ENTRY INTO SERVICE

After 20 working hours or 1 week of service, check all the screws and tighten all the expendable pin.

3/2 OPERATIONS AT EACH SHIFT

Before starting up:

• Check that there is no obstruction to hinder the movement of the boom.

• Check the overall condition of the equipment (cylinders, hoses, tube, hydraulic unions,...).

• Search for leaks.

• Check the extension tube.

• Lubricate all the grease points. It is important to check that the rotary actuators grease discharge

valves are working properly.

After starting up:

• Move on handle the boom to check that it moves freely and operates correctly. Movement should be

regular and smooth.

3/3 50-HOURS OR WEEKLY OPERATIONS

• Check that there is no obstruction to hinder the movement of the boom.

• Check the overall condition of the equipment (cylinders, hoses, tube, hydraulic unions,...).


• Check the extension tube.

• Lubricate all the grease points.It is important to check that the rotary actuator grease discharge


• Check the tightening torque of the cylinders and articulation’s expendable pin.

WARNING

WARNING



3/4 200-HOURS OPERATIONS

• Carry out the 50-hours operations again.

• Check clearance between the boom extension tube and armature. Check the condition of the plastic

skids.

3/5 1200-HOURS OR ANNUAL OPERATIONS

• Check the overall condition of the equipment.

CAUTION: Check welding condition using crack detector products.


• Check the condition of the hydraulic equipments (cylinders, hoses, hydraulic unions,...).

• Check the extension tube. Lubricate it.

• Lubricate all the grease points.It is important to check that the rotary actuator grease discharge


• Check the tightening torque of the cylinders and articulations’ expendable pin.

3/6 3600-HOURS OPERATIONS OVERALL INSPECTION AND RECONDITIONING

• Remove the boom assembly.

• Remove, dismantle and check the different parts. Remove all worn or defective parts.

• Change the seals, (bronze washers),washers and extension tube guide skids.

• Reassemble the boom.

• Test for correct operation.

NB: You can recover all these operations in the periodic maintenance table (last page of this manual)

we invite you to use this document.



4 TIGHTENING TORQUES

For basic genuine SANDVIK TAMROCK SECOMA™ screws and nut use the following tightening

torque:

metric dimension torque in Nm HEX BOLTSGRADE 8.8

torque in Nm “SIX CUT HOLLOW”

BOLTSGRADE 12.9

M6M8M10M12M14M16M18M20M22M24M27M33M36M39M42

10255085

13020028040053067010001780230030003700

164080140210330460650880113016502200385050506250

800

600 800

800

Tightenning torques of expendable pins, see page 13

400



5 LUBRICATION

Use Mobilith SHC 220, Mobilgrease HP 222 or equivalent.

GREASE POINTS

There is a grease nipple on any expendable pin. There is two grease nipples at each end of any rotary

actuator.

• CAUTION: Check that the rotary actuator grease discharge valves are working properly. They are

situated at the opposite side of each grease nipple. Those valves must release excess grease to avoid over-pressure and over-stress on actuator’s seals and flanges.

.Remove fautly valves



6 OPERATING METHODS

WARNING: Before starting any maintenance operation ensure that the machine is in a safe location with good safety, ventilation and lighting conditions. Ensure that lifting equipments and pedestals are compatible with elements’ weight. Follow all the safety instructions and ware safety protections as gloves, goggle, helmet, safety boots, ear protectors.

WARNING: Maintenance, adjustment and repairs are restricted to qualified personnel with special training for the particular equipment. Always read the instructions carefully before starting any maintenance work.

6.1 REMOVING AND REFITTING ARTICULATION EXPENDABLE PIN SET.

Before removal :

• Lift or stand parts with adapted devices.

• Release static pressure in hydraulic circuit and cylinders.

• NOTE : Expendable blocking cones are not re-usable then you must manage their exchangebefore removing them.

• Grease all parts.

• Centre the expendable pin in its housing

• Position spacers, expendable blocking cone and caps.

• Torque tighten the screw according to the diameter (See specific tightening torques).

• Operate several movement cycles and retighten the screw.

• Check an retighten at weekly operation maintenance

session.

WARNING



6/2 CHECKING CYLINDER EXPENDABLE PIN

The cylinder axis are expendable pin that are tightened without clearance to the bracket.

Check the tightening torque. The correct values are as follows :

Check the position of the cut in the expendable pin. the cut must be at 90° to the cylinder’s direction of

movement, see if the expendable pin is carfully lubricate before installing.

When a cylinder is removed, make sure that no part of the boom is left unsuported

TIGHTENING TORQUE OF THE CYLINDER EXPENDABLE PIN

SIZE OF CYLINDER AXIS USING TORQUE WRENCH USING PNEUMATIC TOOL

M 12 60 Nm 55 Nm

M 16 150 Nm 135 Nm

M 20 290 Nm 270 Nm

M 24 530 Nm 490 NM

BRACKETBRACKETEAR

CYLINDER



6/3 REMOVING AND REFITTING A CYLINDER

Removal:

• Lift or stand the boom with adapted devices to prevent a sudden fall of moving parts when operating

decompression.

• WARNING: Stop power packs and proceed an hydraulic circuit decompression.

• Disconnect hydraulic hoses and plug the inlet/outlet ports of the cylinder.

• Fasten the cylinder to prevent it’s fall.

• Remove expendable pin sets.

Refitting:

• Place the cylinder’s rear knuckle in the yoke, insert the expendable pin set and screw. Do not fully

tighten.

• Adjust rod extension to place the front knuckle on the other yoke. Insert axis set. Tighten both of them

(See "tightening torques" page 10).

• Reconnect hoses.

• Pressurize the circuit, bleed and test.

WARNING: While tests are in progress, do not allow any other member of the personnel to stand in the area surrounding the machine. Stay at the control station to be able to stop the movement and switch off the power pack.

For more informations about the cylinders mounting, see the cylinder maintenance manual in SECTION 1.

6/4 REMOVING AND REFITTING A BOOM ASSEMBLY

Removal :

• Line up the boom horizontally and align it with expendable pin.

• Remove the drill feed assembly.

• Sling boom.

• Stop the power pack and release remaining pressure in hydraulic components and hoses by

operating control levers several times.

• Disconnect hydraulic hoses and plug the inlet/outlet ports.

• Remove the boom swing cylinder.

• Extract swinging expendable pin set and remove the boom.

Refitting :

• Check elements condition, replace if necessary.

• Assemble and lubricate elements.

• Connect hoses.

• Bleed and breeze hydraulic circuit.

• Proceed tests.

WARNING



6/5 REMOVING AND REFITTING ROTARY ACTUATOR

Removal:

• WARNING: Stop the power packs and proceed an hydraulic circuit decompression.

• Before removal mark the relative position of boom’s elements with actuator’s flanges.

• Sling or stand the elements with adapted devices to prevent a sudden fall of moving parts.

• Disconnect hydraulic hoses and plug the inlet/outlet ports.

• Secure an fasten the rotary actuator to prevent it’s fall.

• Remove it.

Refitting:

• Check expendable pin play, and adjust if necessary.

• Exchange all flanges screws.

• Apply LOCTITE ADHESIVE 317 on surfaces.

• Torque tighten flanging screws.

For more informations about the cylinders mounting, see the cylinder maintenance manual in SECTION 1.

7 CHECK AND ADJUSTMENT

7/1 HOSE CONDITION CHECK

Oil leakages may involve reliability and safety problems, it is imperative to exchange leaking elements immediately.

WARNING: Pressurized oil jets could cause severe injuries. Before any operation on hydraulic circuit, STOP the power packs and release remaining pressure in components by operating hydraulic control levers several times. Always release the static pressure in cylinders before disassemble them. NEVER WORK ON AN OPERATING CIRCUIT.

7/2 CHECK WELDING CONDITION USING CRACK DETECTOR PRODUCTS

Stress, vibrations, impacts, corrosive agents could cause invisible cracks in weldings.Then it is

extremely important to checks them in order to prevent breakdowns, accidents and injuries risks.

WARNING



7/3 CONTROL/ADJUSTMENT OF CLEARANCE BETWEEN ARMATURE AND EXTENSION TUBE

Gap check

• Line up the boom horizontally and align it with jumbo’s axis.

• remove plate 1 and dust seal 2.

• Fully extend the tube and clean it.

• Gauge the gap A between tube and armature.

• Sling the end of the tube and raise it.

• Gauge the gap B between tube and armature.

• The clearance between the tube and the armature is

estimated as following:

Skids’s clearance: J= A - B

CAUTION:

MAXIMUM CLEARANCE J= 2mm

Clearance adjustment

Untie and let the boom rest by its own weight then

remove plate, shims and skids LOWER2 and UPPER1.

• Measure the skid’s thickness, it must be above 27 mm.

• Measure the shims + skid stack, it must be above 37 mm

Minimum thickness of all the skids = 27mm

Minimum thickness of shims + skid stack = 37mm

• Replace all the 16 skids if one reaches the minimum thickness.

• It will be helpful to note for the next step: the thickness value of LOWER2 and UPPER1 stacks.

Maximum thickness difference between LOWER2 & UPPER1 stacks must not exceed 3mm.

UPPER1UPPER2

LOWER1LOWER2

LEFT1

LEFT2

RIGHT1

RIGHT2

2

1

Jeu A

Jeu B

GAP A

GAP B



• Reassemble LOWER2 & UPPER1 shims and skids and affix plates.

• Sling the end of the tube and raise it. Remove LOWER1 & UPPER2 skids.

• Check skids condition and replace if they are beyond limits.

• Adjust shim stack in order to have the same thickness for LOWER1 & LOWER2. Then Adjust shim

stack in order to have the same thickness for UPPER1 & UPPER2.

This levelling ensure a good parallelism between tube and armature axis.

• Refit all parts and check J clearance, if it stays beyond limit value put shims on UPPER1 & UPPER2

stacks. (there are two type of shims: 0.5mm and 1mm).

NOTE: Tighten plates screws at 150Nm torque.

• Lubricate tube and proceed following tests:

Extend and retract tube in horizontal position. Gauge hydraulic operating pressure needed in cylinder

while operating backward and forward movements.

Max. pressure for forward translation: 120bar

Max. pressure for backward translation: 180bar

• In overpressure situation, free the tube translation by removing a 0.5mm shim in UPPER1 & UPPER2

stacks.

Proceed similar operations for lateral clearance adjustment.

7/4 CONTROL THE WEAR OF THE EXTENSION TUBE

Check the extension tube wear on the

contact area with skids. Wear must not

be superior to 1,5 mn.

7/5 DISMANTLE THE BOOM EXTENSION CYLINDER

The boom extension cylinder is inside the armature tube, and is fixed to the armature tube and to the

extension tube. To remove is cylinder you must have to take off the boom from the machine’s frame.

The figure show you the lay-out of the screws used to fixe the cylinder to the armature tube (Detail A).

A

A

SECTION A-ASECTION A-A

1,5mn

1,5mn

DETAIL A



8 LIFTING - HANDLING

LIFTING POINTS.

WARNING: WARNING: Before starting any maintenance operation ensurethat the machine is in a safe location with good safety, ventilation andlighting conditions. Ensure that lifting equipments and pedestals arecompatible with elements’ weight. Follow all the safety instructions andware safety protections as gloves, goggle, helmet, safety boots, earprotectors.

• WARNING: Check ties you use, they must be in good condition and fit the weight of the assembly

you are going to lift.

• Fasten correctly the elements before starting operations.

NO

YES

YES

NO

NONO



9 PERIODIC MAINTENANCE TABLE - B26 F - B26XL F BOOM

BOOMFREQUENCY (PERCUSSION HOURS)

When completed

Daily 50 200 600 1200 1800 2400 3600Y

yesNno

All tightenning torques

All grease points

All weldings

Leakage

All equipments condition

Freedom and condition of moooving parts

Hoses / Union / Fitting

Extension tube

Dust seal

Skids (clearence between skids and tube)

Rotary actuator discharge valves

Rotary actuator flanges screw (tightening torque and axial play)

Overal inspection :

Remove the boom from the machine / Wash and check all the assembly / Exchange all worn out parts / Test the boom.

CHECKTEST

CLEANFLUSH

LUBRICATE SERVICECHANGEREPLACE



Technical Specification

B 26 F Boom4-200 S-C2003-10-21

APPLICATION

B 26 F boom is designed for Tamrock Axera D05, Axera

D06 and Axera LP jumbos.

B 26 F boom is a hydraulic universal roll-over boom for

mechanized tunnelling, drifting, cross-cutting and bolt-

hole drilling in medium sections. It can also be used for

production drilling with cut-and-fill and room-and-pillar

methods.

This parallel holding telescopic boom offer large «true»

rectangular face coverage area.

TECHNICAL DATA

Coverage with parallelism holding 29,2 m²

Coverage with manual override 38,9 m²

Weight, without hoses 1 850 kg

Weight allowed 1 050 kg

Boom telescopic extension 1 200 mm

Boom lift, up and down 45° and 16°

Boom swing, symmetric ± 45°

Feed tilt, up and down 25° and 50°

Feed swing, symmetric ± 50°

Divergence, up and down 3° and 90°

Feed extension 1 600 mm

Feed roll-over 360°

DESCRIPTION

The x-y coordinated boom movements together with

360° actuator roll-over make the use of the boom simple

and logical. Accurate automatic parallel holding both in

vertical and horizontal plane improves the drilling

performance and accuracy.

Large dimensioned rectangular profile,adjustable and

sealed boom extension wear-pieces, large diameter

bearings, sealed main joints, expanding pins in cylinder

joints and use of super strong cast pieces in most

stressed areas are some of the features that are

included to the boom design for improved reliability.

Boom Swing

Feed Roll-overFeed Tilt

Boom Lift

Boom Extension

Feed Swing

Divergence

Feed Extension

(slave)

Feed Swing(main)

Ensure horizontal //

Ensure vertical //




B 26 F Boom4-200 S-C

2003-10-21

COVERAGE AREA

GENERAL DIMENSIONS

6000 5300

1870

5510

6490

26001253

1200

572

1600

50°

50°

90°

25° 50°

45°

31°

3°

16°

(45°)

26°(45°)

356

360°

www.tamrock.sandvik.comSandvik Tamrock reserve the right to change this specificationwithout further notice




B 26 XL F Boom4-300 S-C2003-10-21

APPLICATION

B 26 XL F boom is designed for Tamrock Axera D05,

Axera D06 and Axera LP jumbos.

B 26 XL F boom is a hydraulic universal roll-over boom

for mechanized tunnelling, drifting, cross-cutting and

bolt-hole drilling in medium sections. It can also be used

for production drilling with cut-and-fill and room-and-

pillar methods.

This parallel holding telescopic boom offer large «true»

rectangular face coverage area.

TECHNICAL DATA

Coverage with parallelism holding 41,4 m²

Coverage with manual override 52,7 m²

Weight, without hoses 1 960 kg

Weight allowed 850 kg

Boom telescopic extension 1 700 mm

Boom lift, up and down 45° and 16°

Boom swing, symmetric ± 45°

Feed tilt, up and down 25° and 50°

Feed swing, symmetric ± 50°

Divergence, up and down 3° and 90°

Feed extension 1 600 mm

Feed roll-over 360°

DESCRIPTION

The x-y coordinated boom movements together with

360° actuator roll-over make the use of the boom simple

and logical. Accurate automatic parallel holding both in

vertical and horizontal plane improves the drilling

performance and accuracy.

Large dimensioned rectangular profile,adjustable and

sealed boom extension wear-pieces, large diameter

bearings, sealed main joints, expanding pins in cylinder

joints and use of super strong cast pieces in most

stressed areas are some of the features that are

included to the boom design for improved reliability.

Boom Swing

Boom Extension

Feed Roll-over

Boom Lift

Feed Tilt

Feed Extension

Divergence

Feed Swing(slave)

Feed Swing(main)

Ensure horizontal //

Ensure vertical //




B 26 XL F Boom4-300 S-C

2003-10-21

COVERAGE AREA

GENERAL DIMENSIONS

7040 6340

2160

6530

7490

31701253

1700

572

1600

50°

50°

90°

25° 50°

45°

31°

3°

16°

(45°)

26°(45°)

356

360°



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