Dynapac 250

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DYNAPACCA250OPERATION0250EN3

DVIIAPACMetso Dynapac ABBox 504, SE-371 23 Kariskrona, Sweden

Phone: +46 455 30 60 ~O,Fax: +46 455 30 60 30www.dynapac.com
http://www.dynapac.com/http://www.dynapac.com/

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DVIVAPACVibratory Roller

CA250Operation0250EN3, April 2003Diesel engine:CA 250: Cummins 4BTAA 3.9C

These instructions apply from:CA 250 PIN (SIN) *65720251*CA 2500 PIN (SIN) *65820251*CA 250PD PIN (SIN) *65920251*CA 250P PIN (SIN) *66020251*

Oynapac's medium heavy vibratory soil compactor is the CA 250.This compactor is available in (smooth drum), P (padfoot) and PO versions respectively.Both the P and PO versions are used mainly on cohesive material and disintegrated rock.All types of base courses and subbase courses can be compacted deeper and the interchangeabledrums, ie, std to P, 0 to PO and vice versa, facilitate even greater variety in the range ofapplication.

The cab and safety-related accessories are described in this manual. Other accessories,such as compaction meter, speed recorder and CCSIRA field computer,are described in separate instructions.

Reservation for changes.Printed in Sweden.

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CONTENTS. PageSafety Instructions (Read the Safety Manual also) 3Safety when driving 4Safety decals, location/description 5, 6

Machine and engine plates 7,8Instruments and controls 9Instruments and controls, functional description 10, 11Controls in the cab 12Controls in the cab, functional description 13Before starting 14-16Starting 17D' .v.~vln~ :..: 18I ratlon/Drivinq 19Driving on difficult courses 19Braking 20Parking 21Instructions for lifting 22T .owlng 23

Instructions for towing 24Transport 25Towing/Retrieval 25Operating instructions - Summary 26

I WARNING SYMBOLSA Safety instructions - Personal safetySpecial caution - Machine or component damage

I SAFETY MANUALThe safety manual, which accompanies eachmachine, must be studied by each operator ofthe roller. Always follow the safety rules anddo not remove the manual from the roller.

GENERALThis manual contains instructions concerning operationand use of the roller. For information regarding care andmaintenance, see the manual, "MAINTENANCE, CA 250".

When starting up and driving a cold machine,which implies cold hydraulic fluid, the brakingdistance will be longer than normal until themachine reaches normal working temperature.

CALIFORNIAProposition 65Warning

Diesel engine exhaust and some of itsconstituents are known to the State ofCalifornia to cause cancer, birth defects,and other reproductive harm.

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SAFETY INSTRUCTIONS (Read the Safety Manual also)WARNINGA 1. The operator must be familiar with the contents of the OPERATION MAN-UAL before starting the roller.

2. Make sure that all instructions in the MAINTENANCE MANUAL are fol-lowed.

3. Only trained and/or experienced operators may drive the roller. Passen-gers are not allowed on the roller. Remain seated during all operation.

4. Never use the roller if it is in need of adjustment or repairs.5. Board and leave the roller only when it is stationary. Use the grips and

railings that are provided. Always use a "three-point grip" - both feet andone hand or one foot and both hands - when boarding or exiting the machine.

6. The ROPS (Roll Over Protective Structure) should always be used whenthe machine is operated on risky ground.

7. Drive slowly in sharp bends.8. Avoid driving at an angle on slopes; drive straight up or down.9. When driving close to unsafe edges or holes, make sure that at least twothirds of the drum width is firmly on material that has already been com-pacted.

10. Make sure that there are no obstacles in the direction of travel, on theground or overhead.11. Drive extra carefully on uneven ground.12. Use the safety equipment provided. The seat belt must be worn on ma-

chines fitted with ROPS.13. Keep the roller clean. Clean dirt and grease from the operator's platform

without delay. Keep all signs and decals clean and clearly legible.14. Safety measures before refueling:

- Stop the engine.- Do not smoke.- No naked flame in the vicinity.- Ground the nozzle of the filling device against the tank to prevent sparks.

15. Before repairs or service:- Place chocks against the drums/wheels and against the strike-off blade.- Lock the articulation if required.

16. Hearing protectors are recommended if the noise level exceeds 85 dB(A).The noise level may vary depending on what material the machine is oper-ating on.

17. Make no changes or modifications on the roller that could affect safety.Changes may only be made following written consent by Dynapac.

18. Do not use the roller until the hydraulic fluid has reached its normal work-ing temperature. Braking distance can be longer than usual if the fluid iscold. See starting instructions in the OPERATION MANUAL.

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SAFETY WHEN DRIVINGDriving near an edge

At least2/3

Fig. 1 Position of drum when driving nearan edge

Slopes

Fig.2 Tipping angle onside slopes

When you drive near an edge, at least two thirds of thedrum width must be on solid ground.Remember that the machine's center ofgravity is displaced outward when yousteer to one side. For example, it shifts tothe right when you steer to the left.

The ROPS (Roll Over Protective Structure)is always recommended when driving onslopes or insecure ground.Where possible, avoid all driving across aslope. Instead, drive up and down on slop-ing ground.

The tilting angle is measured on a hard, level surfacewith the machine stationary, steering angle zero, vibra-tion switched OFF and all tanks full. Remember thatloose ground, steering of the machine, vibrationswitched ON, driving speed and raising the center ofgravity (for example, with accessories) may cause themachine to topple even on a smaller slope than thatstated here.

To leave the cab in an emergency, releasethe hammer located on the rear right postand break the rear window.

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SAFETY DECALS, LOCATION/DESCRIPTION3 2 8 16 11 7 18l~-, ~ - - - - - - - - - - - - - - - - - - - - - r - - - - - . - - - - - - - - - - - \. .. . . ...\. \. ... .,. .~==~~'. . .,,..

10 12 13 5 1 17 13 6

14

13 12 1 5 13 6 17

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1 . . . - - - - - - ~ - - - - - - ~

SAFETY DECALS, LOCATION/DESCRIPTION

903422

Crush zone, articulation!Drum. Maintain a safedistance from the crushzone.

2. A .AWARNINGli8D ~I

03423

Warning - rotating enginecomponents. Keep yourhands at a safe distance fromthe danger zone.3. A AWARNING~ D ~ I

903424

Warning - hot surfaces inthe engine compartment.Do not touch.

4.

903985

Tires filled with ballast(Optional)Read the instruction manual.

'''~ 1~~~ WBattery 903425disconnector Handbook

compartment

~ Hydraulolja~ 1 2 ' ! lEmergency exit W

803469

The operator is urgentlyrequested to read the safetymanual, and the operationand maintenance instructionsbefore using the machine.

6.

908229

A. AWARNING~WThe articulation must beinterlocked when lifting.Read the instruction manual.

7.

8.... -- ..... --- ..

109 d BSound Power

level10. tml

~Diesel fuel

11 . m I lLifting point

Start gas may never be used. Securingpoint

16.

Tire pressure

ACTIVATE THE PARKING BRAKE BEFORELEAVING THE OPERATOR'S PLATFORM

17. 0

o M~s ~ 0

Lifting plate


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MACHINE AND ENGINE PLATESMachine plate

Fig.3 Operator's platform1. Machine plate

PIN on frame

Flg.4 Front frame1 . P IN

The machine type plate (1) is affixed on the front leftedge of the tractor frame. The plate shows themanufacturer's name and address, type of machineand PIN "Part Identification Number" (serial number).Please state the PIN (serial number) of the roller whenordering spare parts.

DVIVAPAC C (Metso Oynapac ASBox 504, SE-371 23 Karlskrona Sweden

o o

Type Operating mass kg Raled Power kW Year of Mfg

Product IdentUlcation Number

o

The PIN (1) of the machine is punched on the front rightedge of the forward frame beam.

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MACHINE AND ENGINE PLATES

Fig.5 Engine1. Engine plate2. EPA sign (USA)

EUiEPA sign

Fig. 6 Operator's platform1. Data platelcombination plate

The engine data plate (1) is affixed to the right side ofthe engine under the injection pump. The plate indicatesthe type of engine, serial number and engine data.Please state the engine serial number when orderingspare parts. See also the engine manual.Engine plate

EPA sign (USA)IMPORTANT ENGINE INFORMATION

This engine conforms to xxxx U.S. EPAand California regulations forheavy duty non-road compressionignition diesel cycle engines as

applicable.THIS ENGINE IS CERTIFIED TOOPERATE

ON DIESEL FUEL

I M PORTANT ENG INE INFORMATIONThis engine conforms to 2003 U.S. EPA andCal iforni a T ie r I I a nd EU s tage 2 regul aUonsfor heavy duty non -road compressi onIgnhlon diesel cycle englnB8 sa applicable.T H IS E NCl iN E I S C E RT IF IE D TO O P ERA TEON D IE S EL F UELC MADE IN GREAT BRITAIN BYCUMMINS INC.www.cummins.com

Engine Serial No.............................. 2] 547316CUstomer Spec . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. 3H6b16Engine Model: Bl.9-IIOeliming TOC...................... PLUNGER O.HMMFuel rate atrated HP.............. 84.0 mmNstFR ..... 91165 Low Idle RPM......... 850Oate o(M(g.............. 10-12-02

CfOlL _ 2.19/3.9 CrL K039Family _ 3CP.XLI12.19AAOell 9716KFA00/00-019900Valvo lash - [coldl inch Int. .010 Exh. .Q20mm Inl .254 Exh. .508Firing Order................................... 1-3-4-2Rated HPIkW 110182 @ 2200 RPM

http://www.cummins.com/http://www.cummins.com/

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INSTRUMENTS AND CONTROLS6 10 11

Fig. 7 Instruments and control panel

1. Horn2. Starter switch/Preheating lamp3. Hazard beacon04. Working lightsD5. Reserve/Parking brake knob6. Instrument protection7. Warning lamp, charging8. Brake warning lamp9. Warning lamp, engine oil pressure/Warning lamp, engine temperature10. Warning lamp, hydraulic filter11. Warning lamp, air filter

12. Warning lamp, hydraulic temperature13. Amplitude selector Low/a/High14. Speed selector, drum 015. Speed selector, rear axle016. Engine revs control17. Fuel gauge18. Fuse box19. Vibration ON/OFF20. Forward/Reverse lever21. Test button for warning lamps22. Handbook compartment0= Optional

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INSTRUMENTS AND CONTROLS, FUNCTIONAL DESCRIPTIONItem in Designation Symbol Functionfig. 71 Horn, switch ~ Press to sound the horn.

2 Starter switch 0 In mode 0the electric circuit is broken.I In mode I all instruments and electriccontrols are powered, and the engine5 preheater is activated.NB. Do not start the engine before thepreheating lamp goes out.In mode 6 the starter motor is energized .

3 Hazard beacon, switch .~ : O : ~. Turn to the right to switch on the hazard(Optional) ,. ., beacon.4 Working lights, 0 Turn to the right to switch on the workingswitch (Optional) I\\~ lights.5 Reserve brake/Parking brake () Push in to activate the reserve brake.Parking brake is applied if pushed in whenmachine is stationary. Both brakes arereleased when knob is pulled out.6 Instrument protection -- Fold down over the instruments to protectfrom weather and damage.7 Warning lamp, battery c : ! J The alternator is not charging if this lampcharging lights when the engine is running.

Stop the engine and locate the fault.8 Brake warning lamp (0) This lamp will light when the parking orreserve brake knob is pressed and thebrakes are applied.9 Warning lamp, oil pressure

~This lamp lights if lubricating pressure in theengine is too low. Stop the engineimmediately and locate the fault.

10 Warning lamp, hydraulic filter~

I f the lamp lights up when the diesel engineis running at full speed, the hydraulic fluid~--o4 filters must be replaced.

11 Warning lamp, air filter C ) The air filter should be cleaned or replaced ifthis lamp lights when the engine is running at" - - 0 4 full speed.12 Warning lamp, hydraulic ~i This lamp lights ifthe hydraulic fuel istoo hot.temperature Stop the roller, and allow the fluid to cool down byidling the engine. Locate and remedy the fault.


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INSTRUMENTS AND CONTROLS, FUNCTIONAL DESCRIPTION

Item in Designation Symbol Functionfig. 713 Amplitude selector r A P Left mode gives low amplitude.0 Right mode gives high amplitude.

- . :: A P Vibration switched OFF in 0 mode.14 Speed selector, drum if' Transport speed (High)(Optional) . . . . . Working speed (Low)15 Speed selector, rear axle if' Transport speed (High)(Optional) . . . . . Working speed (Low)16 Revs control, diesel engine -- Upper mode, engine working revs.Lower mode, idling revs.17 Fuel gauge m Indicates fuel level.18 Fuse box -- Contains fuses for the electrical system.19 Vibration ON/OFF, switch 0 Push and release the switch to engageI vibration, push once more to disengagevibration. The above applies only when the-mplitude selector (13) is in position High orLow..20 Forward/Reverse control -- The lever must be in neutral to start theengine, it cannot be started with the forward/reverse lever in any other position.Direction of travel and speed of the roller isregulated with the forward/reverse lever.The roller moves forward when the lever ismoved forward, etc. Speed of the roller isregulated in proportion to how far the leveris moved from neutral. The further fromneutral, the higher the speed.21 Test button for warning lamps C 0 The lamps 10, 11, 12 are checked when theswitch is pressed.22 Handbook compartment W Stowage space for safety manual andoperator's manuals.

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CONTROLS IN THE CAB

1 2 3

mFig. BaCab roof, front

Fig. Be Cab, right side

Fig. Be Cab, left side

0010

Fig. BbCab roof, rear

Fig. BdCab, rear


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CONTROLS IN THE CAB, FUNCTIONAL DESCRIPTIONItems in Designation Symbol Functionfig. 8

1 Wiper front, switch \9 Press to turn on the front wiper.2 Wiper rear, switch

~Press to turn on the rear wiper.

3 Screenwash front and rear r ........... Press at the top to spray the windscreen.panes, switch W Press at the bottom to spray the rear screen., " " ' 1 " " ' ,C + J

4 Hammer for emergency

rTo evacuate the cab in an emergency,evacuation release the hammer and break the REARwindow.

6 Heater (Optional) ~ Left mode, maximum heating.Right mode, heating turned off.7 Air fan, switch = Left mode, fan turned off. Right mode, cab(Optional) ventilation increases in three steps.8 Cab lighting, '-"" Press to turn on the cab lights.switch ' " \~9 Windshield washer fluid -- Fill with new fluid as needed.

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Remember to carry out daily service. See maintenancemanual.

BEFORE STARTINGBattery disconnecter- Switching ON

21

Fig.9 Engine compartment1. Battery disconnecter2. Hourmeter

Operator's seat - Setting

1

Flg.10 Operator's seat1. Locking lever - length adjustment

Operator's seat in cab and withROPS (Optional) - Setting

2

/Fig.11 Operator's seat1. Locking lever - length adjustment2. Lever - weight adjustment

3. Seat belt

The battery disconnecter is located in the enginecompartment. Open the engine cover and set the key(1) to the ON position. Thsentlrs roller will be powered.The hourmeter (2) records the number of hours so longas the engine is running.

The engine hood must be unlocked duringoperation, so that battery power can bedisconnected quickly if necessary.

Adjust the operator's seat to ensure a comfortableposture and so that all controls are within easy reach.The seat can be adjusted as follows: Length adjustment (1 )

Always make sure that the seat is securebefore beginning operation.

Adjust the operator's seat to ensure a comfortableposture and so that all controls are within easy reach.The seat can be adjusted as follows: Length adjustment (1) Cushioning to suit weight of operator (2).

1iAAlways make sure that the seat is securebefore beginning operation.

Remember to use the seat belt (3).

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BEFORE STARTINGInstruments and lamps- Checking

7 8 12

Fig. 12 Instrument panel2. Starter switch/Preheating lamp7. Charging lamp8. Brake lamp12. Oil pressure lamp17. Fuel gauge21. Testbutton for warning lamps

Reserve/parking brake- Check

Flg.13 Controls panel5. Reserve/parking brake knob8. Brake lamp

Operator's station

Fig. 14 Operator's station1. Seat belt2. ROPS3. Rubber element4. Anti-slip

Turn the starter switch (2) to position I. Press thebutton (21) and make sure that all the control lampslight.Check that the fuel gauge (17) gives a reading.Check that the warning lamps for charging (7), oilpressure (12) and parking brake (8) light.Check that the indicator lamp (2) for engine preheatinglights.

Ensure that the reserve/parking brake knob(30) is pressed down.The roller can start to move if the engine isstarted on sloping ground if the parkingbrake is not applied.

If the roller is equipped with a ROPS (Roll OverProtective Structure) or a cab, always use the seat belt(1) and wear a hard hat.Replace the seat belt (1) if it shows signs ofwear or has been subjected to severe force.

Check that the rubber elements (3) on theplatform are intact. Worn elements wlll impaircomfort.Ensure that the anti-Slip (4) on the platform isin good condition; replace with new anti-Slip iffriction is poor.If the machine is fitted with a cab, make surethat the door is closed when in motion.

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BEFORE STARTINGField of view

Fig.15 Fieldofview

Before starting, make sure that the field of view isunobstructed, both in front and behind. All cab windowsmust be clean and rearview mirrors properly adjusted.


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STARTINGStarting the engine

7 8 9

Fig.16 Control panel2. Starter switch/Preheating lamp7. Charging lamp8. Brake lamp9. Oil pressure lamp/enginetemperature13. Amplitude selector16. Revs control20. Forward/Reverse lever

Set the forward/reverse lever (20) in neutral. Theengine can only be started with the lever in neutral.Set the amplitude selector (13) for Low/High vibration tomode O.Set the revs control (16) to the idling mode.Turn the starter switch (2) to mode I. The preheatinglamp (2) lights if the engine needs preheating beforestarting, ie, wait until the preheating lamp goes outbefore turning the starter switch to start.m Do not run the starter motor too long. If the. engine does not start immediately, wait aminute or so before making a new attempt.Warm up the diesel.engine with the engine speedcontrol at the idling setting for a few minutes, or for alonger period if the ambient air temperature is below+10C (+50F).Check while warming up that the warning lamps for oilpressure (9) and charging (7) are out. The warninglamp (8) for the parking brake shall still light.

When starting up and driving a cold machl-ne,ie, cold hydraulic fluid, the brakingdistance will be longer than normal untilthe fluid reaches normal working tempera-ture.Ensure that ventilation (evacuation) isadequate if the engine is run indoors. ie,danger of carbon monoxide poisoning.Start gas may not be used because thediesel engine is fitted with an electricpreheating device in the intake tube.Risk of personal injury.

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DRIVINGDriving the roller5 11

Under no circumstances may the machinebe operated from the outside. The operatormust remain seated inside the machineduring all operation.

Move the revs control lever (16) upwards and latch it atits limit, engine speed shouldnow be about 2300 rpm.Ensure that the steering is working properly by turningthe steering wheel once to the right and once to the leftwhile the roller is stationary.

Ensure that the area in front of and behindthe roller is clear.

Fig. 17 Instrument panel5. Reserve/parking brake knob11. Warning lamp, air filter14. Speed selector, drum15. Speed selector, rear axle16. Revs control20. Forward/Reverse lever

Pull up the reserve/parking brake knob (5)and check that the warning lamp for theparking brake is out. When starting theroller on a slope, be prepared that it maybegin to roll.

Set the High/Low speed selectors (14) and (15) to thedesired mode, see decal on the control panel.Max. speedsLow drum/Low rear axle = 5 km/h (3 mph)High drum/Low rear axle = 6 km/h (3.7 mph)*" Low drum/High rear axle = 9 km/h (5.5 mph)*High drum/High rear axle = 16 km/h (10 mph)** (with optional accessory only)

The High/High mode may only be used fortransport runs on an even surface.Carefully move the forward/reverse lever (20) in thedesired direction of travel. Speed increases as thelever is moved farther from the neutral posit ion.

Speed must always be regulated with theforward/reverse lever and never by changingspeed of the engine.Test the reserve brake by pressing thereserve/parking brake knob (5) while theroller is running slowly forward. Stop theroller and identify the fault if the brakedoes not work.

Check occasionally while driving that no lamps light. Ifthe oil pressure lamp lights, stop the roller and theengine immediately. Check and remedy any fault; seealso the maintenance manual and the engine manual.If the warning lamp (11) for the air cleanerlights during operation (at full engine revs), themain filter must be cleaned or replaced; seeMaintenance Manual.

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. 1 VIBRATION/DRIVINGLow/High amplitude- Setting

Fig. 18 Instrument panel13. Amplitude selector19. Vibration ON/OFF

Drum vibration can be set in two modes, selected usingthe switch (13). Turn the knob to the left mode for lowamplitude, to the right mode for high amplitude.ill Never alter the amplitude sett ing while thevibration is running. Switch vibration off firstandwait until it has ceased before altering theamplitude.Engagement and disengagement of vibration is madewith the switch (19) on top of the forward/reverse lever.Always switch off vibration before the roller comes to acomplete standstill.

i l l Never allow vibration to be on when the rolleris stationary; this may damage the surfaceand the machine.

DRIVING ON DIFFICULT COURSESDrum drive (Optional)

14

If the machine is equipped with a 2-speed drum driveand becomes bogged down, turn the knobs for drivingas follows.If the drum spins, set the drum drive high and the rearaxle low.If the rear tires spin, set the drum drive low and the rear

15 axle high.

Flg.19 Control panel14. Speed selector, drum15. Speed selector, rear axle

Set the knobs to their initial positions when grip isrestored to the machine.

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BRAKING

Fig.20 Controlpanel5. Reserve brake knob19. Vibration switch ON/OFF20. Forward/Reverse lever

Switching off

2Fig.21 Instrument panel2. Starter switch

Using the reserve brakeBraking is normally done with the forwardlreverse lever(20).The hydrostatic transmission brakes the roller when thelever is moved toward neutral. In addition, multi-discbrakes in the rear axle act as a parking brake and areactivated when the reserve brake knob (5) is pressed in.

To brake in an emergency, press the reser-ve/parking brake knob (5), hold the stee-ring wheel firmly and be prepared for asudden stop.After braking, restore the forward/reverse lever toneutral and pull up the reserve/parking brake knob.Normal brakingPress the switch (19) to disengage vibration.Move the forward/reverse lever (20) to neutral to stopthe roller.

Always press the parking brake knob (5),even for brief stops on sloping ground.Turn the speed control back to idling, allow the engineto idle a few minutes to cool down.

When starting up and driving a coldmachine, which implies cold hydraulicfluid, the braking distance will be longerthan normal until the machine reachesworking temperature.

Check instruments and warning lamps to see if anyfaults are indicated. Switch off all lights and otherelectrical functions.Turn the starter switch (2) to mode O. Lower the instru-ment cover (on rollers without cab) and lock it.


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PARKINGChocking the drum

1Fig. 22 Arrangement

1. Chock

Battery disconnector

1

Fig.23 Battery compartmen1. Battery disconnector

CAunON[]

Never leave the roller with the enginerunning unless the reserve/parking brakeknob is pressed in.Ensure that the roller is parked in a safeplace for traffic. Chock the drums if theroller is parked on sloping ground.Remember the risk of freezing during thewinter. Fill the cooling system of the enginewith anti-freeze mixture. See alsomaintenance instructions.

Switch the batterydisconnector (1) into disconnectedmode and remove the key before leaving the roller.This will prevent discharging of the battery and will alsomake it difficult for any unauthorized person to start anddrive the machine. Also lock the engine compartmentcover.

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Articulation must be locked to preventinadvertent turning before lifting the roller.

~ ' N _ S _ T _ R _ U _ C _ T _ ' O _ N _ S_ _ F _ O _ R _ _ L _ ' F _ T _ ' N _ G ~ --~ILocking the articulated joint

4 3 2 1Fig. 24 Articulation In interlocked mode1. Locking arm2. Locking cotter3. Locking stud4. Locking lugLifting the roller

Weight: See lifting plate on the roller.

Fig. 25 Roller prepared for lifting1. Lifting plate

Fig.26 Articulation Inopen mode1.Locking arm2. Locking cotter3. Locking stud4. Locking lug

Turn the steering wheel so that the machine is set todrive straight forward. Push in the reserve/parkingbrake knob... 'Pull out the lowermost locking cotter (2) fitted with awire, pull up locking stud (3) fitted with a wire.Fold out the locking arm (1) and secure it to the upperlocking lug (4) on rear machine frame.Fit the locking stud (3) in the holes through the lockingarm (1) and locking lug (4) and secure the stud inposition with the locking cotter (2).

mAThe gross'weight of the machine is notedon the lifting plate (1). See also technicalspecifications 'in the maintenance instruc-tions.Lifting gear, such as chains, steel wires,straps, and lifting hooks must be dimensionedin conformance with current regulations.Keep well clear of the lifted machine I Makesure that lifting hooks are securely anchored.

Remember to restore the articulation interlockto its open mode before driving again.Fold back the locking arm (1) and secure it in thelocking lug (4) with the locking stud (3). Insert thelowermost locking cotter (2) fitted with a wire, to securethe locking stud (3). The locking lug (4) is located onthe tractor frame.

CAUTIONO J


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TOWINGAlternative 1Towing short distance withengine working

Fig.27 Propulsion pump1. Towing valve2. Locknut

Alternative 2Towing short distance withengine not working

3

34mm(1.34 in)

4/

Flg.28 Rear axle3. Locknut4. Adjusting screw

The roller may be moved a distance of up to 300metres (330 yards) using either of the followingalternatives.WARNINGA Press the reserve/parking brake knob, andstop the engine temporarily. Chock thedrums to prevent the machine from rolling.Turn both towing valves (1) (middle hexagonal nut)three turns anticlockwise, holding against on themultifunction valve (2) (lowermost hexagonal nut). Thevalves are located on top of the propulsion pump.Start the engine and allow it to idle.The roller can now be towed and can also be steered ifthe steering system is in action.

. Chock the drums to prevent the roller frommoving when the brakes' are mechanicallydisengaged.First, open both of the towing valves according toalternative 1 above.Rear axle brakeUndo the locknut (3) and adjust the adjustment screws(4) by hand until resistance increases, and then oneadditional turn. The adjustment screws are located onthe rear axle, two screws on each side of thedifferential housing.

After towing, remember to tighten the towingvalves (1). Screw out the adjusting screws (4)to their initial position 34 mm (1.34 in) from thecontact surface, and tighten the locknuts (3).Tighten the four hexagonal socket screws (5).

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After towing. remember to tighten the towingvalves (1). Screw out the adjusting screws (4)to their initial position 34 mm (1.34 in) from thecontact surface. and tighten the locknuts (3).Tighten the four hexagonal socket screws (5).

INSTRUCTIONS FOR TOWING

Normal modeBrake is active

Towing modeBrake disengaged

5Smm

Flg.29 Drum brake5. Screw

Drum axle, brake disengagementDisengage the drum brake by unscrewing the fourhexagonal socket screws (5) about 5 mm (3/16 in) andthen by pulling out the motor adapter against the screwheads. .The brakes are now disengaged and the roller can betowed. .


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TOWING/RETRIEVALTowing a roller

Fig. 30 Retrieval

The roller must be counter-braked whentowing. Use a towbar because the roller willhave no ability to brake.The roller must be towed slowly, max. 3 km/h(2 mph) and for a short distance only, max. 300m (330 yards).

When a machine is towed/retrieved, the towing devicemust be connected to both lifting holes. Pulling forcesshall act longitudinally on the machine as illustrated.r n Restore the items for towing according toalternative 1 or 2on the preceding page.TRANSPORT

Roller prepared for transport

3 1 2 3Fig. 31 Transportation1. Chocks2. Supporting blocks3. Lashing wire

Interlock the articulation before lifting andtransportation. Follow the instructionsunder the respective heading.Chock the drums (1) and secure the chocks to thetransport vehicle.Block up under the drum frame (2), to avoid overloadon the rubber suspension of the drum when lashing.Clamp down the roller with lashing strap (3) at all fourcorners; decals indicate the fixing paints.

Remember to restore the articulation interlockto its open mode before starting the rolleragain.

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OPERATING INSTRUCTIONS - SUMMARY

13. IN AN EMERGENCY: - Push in the reserve/parking brake knob.- Hold the steering wheel firmly.- Brace yourself for a sudden stop.

1. Follow the SAFETY INSTRUCTIONS in the Safety Manual.

2. Ensure that all instructions in the maintenance manual are followed.

3. Turn the battery disconnecter to ON.

4. Move the forward/reverse lever to neutral.

5. Set the vibration selector to the 0mode.

6. Set the revs control to the idling mode.

7. Start the engine and allow it to warm up.

8. Set the revs control in the operating mode.

9 .WARNINGA 10.WARNING 11.

A

Put the reserve/parking brake knob in the pulled-out position.

Drive the roller. Operate the forward/reverse controls with care.

Test the brakes.Remember that the braking distance will be longer if the roller is cold.

12. Use the vibration only when the roller is in motion.

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14. Parking: Push in the reserve/parking brake knob.Stop the engine and chock the drums.15. Lifting: - See the operation manual.

16. Towing: - See the operation manual.

17. Transport: - See the operation manual.

18. Retrieval: - See the operation manual.DVlVAPAC CA 250 0250EN3

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Dynapac 250