Terri ATD User manual

1
Operator‘s manual
Before taking your Terri in use read the manual
carefully and get familiar with the contents
TERRI ATD
FromChassinr:20017068 604688D

2
Foreword
Thismanualexplainshowtooperateandmain-
tainyournewTerri ATD.Evenifyouarealready
familiarwithTerri,thereisalotofinformationin
thismanualwhichyouwillneedtoknow.
Youcancarryoutlubricationandroutinemainte-
nanceyourself,butfortheotherservicingwork
westronglyadvicethatthemachineshouldbe
handedovertoyourdealer,whohasawell-trained
workshopstaffavailable.
Wereservetherighttoalterthespecicationsand
equipment,aswellasinstructionsformaintenance
andotherservicemeasures,withoutpriornotica-
tion.
Manufacturer: Alcab, THT AB
 Viksdal
 74451Morgongåva
 Tel.[phone]70
 Fax[phone]11
 Fax[phone]72
Typeofmachine:  
TERRI ATD
Powerrating:24,4 kW(DIN70020)
Serialnumber: ............................................................
Motornumber: ............................................................
Machineplate:
 Placedattheleftfrontoftheengine
 house

3
CONTENTS
2 Foreword
2 Manufacturer
2 Machine plate
2 Serial number
3 Contents
4 Description
5 Safety
7 Working in the vicinity of aerial lines
8 Terry ATD main parts
9 Instruments and controls
10 Control board
10 Instrument board
19 Driving seat
20 Driving instructions
22 Maintenance
22 Motor
24 Fuel system
25 Air cleaner
26 Cooling system
27 Electrical system
29 Hydraulic system
30 Hydraulic oil container
31 Track roller bogie system
33 Brakes
34 Winch
35 Gear box unit
36 Adjustment possibilities of the wagon
36 Towing
37 Lubrication
38 Recommended lubricants
39 Maintenance Chart
40 Trouble shooting
41 Technical data
42 Alphabetical contents

4
DESCRIPTION
TERRI ATD
Terri ATD isatrackdrivecross-countryvehiclewithAckermannsteeringsystemandaloadingcapacityof3tons.
Terri ATD isaspecialpurposemachinewithanextensiveandmany-sidedrangeofapplication.
Terri ATDisequippedwithafour-cylinder,uidcooledLombardiniLDWdieselunitengine.
Terri ATDisequippedwithahydrostatic/mechanicalsteeringassemblywithsealedhydrauliccircuit.Aneffect 
limitedvariablehydraulicpumpthatisdirectlycoupledtoaninternalcombustionengineoperatesthesystem.
Inthetractorunitahigh-speedhydraulicmotorisrunninga2-speedgearboxofpreselectiontypewithamechanicaldifferen-
tialblocking.Thegearboxrunsthetracksviatwogearwheels.
Terri ATD iseasytodrivewithsmoothrunningcharacteristicsandgreattractiveforceinallsituations.Theclosed 
hydraulicsystemisequallyeffectiveasabrakeasitprovidesgreattractiveforce.
Thedriver’scabisspaciousandthecontrolcomponentsusedforworkarewithinconvenientreach.Thenumbersof
functionsnecessarytooperateTerri ATD areminimised.Thereforeboththedriving-andworkingpositionis  
comfortableforthedriver.Theexiblegrabloaderiseitheroperatedviaaconventionalmultipleleversystemorviaa 
doubleleversystem,inthatcaseequippedwithbuilt-indrivingfunctions.Thedriver’sseatisobtainablewith  
mechanicspringsorairsprings.
Atthefrontofthemachinethereisabuilt-inwinch.Thewinchcanbeusedtopulloffthemachineortodrawout 
timberfrominaccessibleterrain.
LOADING UNIT EQUIPPED WITH HYDRAULIC DRIVE
Thewagonisequippedwithtwolowspeedhydraulicmotorsthatoperatethetracksviaagearpinion.Thewagonis
equippedwithanautomatichydraulicdifferentialbrake.Anelectricswitchinthecabinswitchesthewagonoperation 
onandoff.Whenthewagonoperationisdisconnectedthehydraulicmotorsarebalancedatthesametimesothat 
thewagoncanrunfree.Maximumtransportspeedisachievedbydisconnectingthewagonoperationandputtingin 
thehigh-speedgear.
Thewagonisequippedwithabuilt-inparkingbrakethatisoperatedviaanelectricswitchinthecabin.Whenthe 
motorisstoppedthewagonisbrakedautomatically.
Remember! Security always depends upon the driver, therefore
follow the security instructions carefully.

5
GENERAL SECURITY REGULA-
TIONS
Readandtrytounderstandthecontentsofthischapter.It
containsatableofrulesthatalwaysmustbefollowedwhen
workingwithTerri.
However,theserulesdonotexcusethedriverfromnotfol-
lowingstatutoryorotherregulationsvalidnationallyinthe
eldofsafetyintrafcandoccupationalsecurity.
As a matter of precaution
Itisthedriver’sdutytobewellacquaintedwiththemain-
tenanceinstructionsandsecurityregulationsconcerningthe
machine.
Damages
Itisthedriver’sdutytotakeimmediatelycareofdamages
andwearandtearthatcanbehazardoustosecurity.
Maintenance
Performregularlythemaintenancemeasuresaccordingto
thechart.Whenperformingservice-andinspectionmeasu-
res,putdownthegrippingapplianceandstopthemotor.
Danger-zone
Thedanger-zoneforthemachineis20m,withinthisrange
nobodymayloiterwhenthemachineisinoperation.
Driver’s mates
Therearenoseatsfordriver’smates.
Carbon monoxide danger
Neverstartthemotororletitrunindoors.Dangerofcarbon
monoxidepoisoning.
Tipping over
Ifthemachinetipsover,holdontothedriver’sseatorthe
handles.DONOTJUMP!
Fire extinguisher
Thereextinguishermustalwaysbeincludedwhendriving
Terri.Befamiliarwiththeinstructionsforthereextinguis-
her.Inspectregularlythatthemanometerneedleofthere
extinguisheriswithinthegreeneld.
Support
Alwaysusethesupportbraceswhenworkingwiththecrane.
Load
Neverloadhigherthantheheightofthesafeguardposts.
Load in the crane
Neverdrivethemachinewithloadhangingintheloading
crane.
Hanging load
Nevergoorstandunderhangingload.
ThissymbolmeansDANGER, be careful.Yourand
otherpeople´ssecurityandhealthareatstake.

6
Before driving
Checkwhetherthefunctionsofthedrivingleversandbrake
controlisallright.
Driving
Neverdrivethemachinemerelywithwagonoperation.This
cancausethemachinetotipundercertaincircumstances.
Thelowgearofthetractorunitmustalwaysbeengaged
whenwagonoperationisengaged.Whendrivingonuphill
anddownhillslopesthewagonoperationmustalwaysbe
engaged.
PRIOR TO leaving the machine
Beforeyouleavethemachine:putdowntheloggrips,stop
themotorandswitchoffthemainswitch.
Fluid levels
Whencontrollingtheuidlevelorllingthefueltankorthe
uidlevelofthebatteryneveruseopenames.
Terrain
Ifpossible,inspecttheterrainwhereyouaretodrive,especi-
allyduringthewintertimewhenthesnowiscoveringbumps.
Payattentiontotheangleofinclinationandtheconsequen-
cesthiswillhaveonthestabilityofthetractor.
Children
Neverallowchildreninthecabinorinthevicinityofthe
machinewhenthemotorisrunning.
Emergency exits
Getfamiliarwiththeemergencyexitsofthecabin.
1.Sidedoor
2.Roofhatch
3.Windscreen
Thesecuritypinsoftheroofhatchmustbewithdrawnwhen
drivingonanice-coveredlake.
Whenthewindscreenisusedasemergencyexit,smashrst
thescreenwiththehammer,placedinsideontherightinthe
cabin.

7
Körning med upplyftad kranarm får ej ske
under eller i närheten av elektriska luftledningar.
Vältä työskentelyä sähköisten avojohtojen alapuo-
lella tai läheisyydessä.
Use of the loader under or near open electrical
Wires is forbidden.
Der Betricb des Ladekranes unler oder nahe bei
offenen elektrischen Leitungen ist nicht gestallet.
Totalheight
Beawareofthetotalheightofthecraneandtheloadbefore
drivingwheretheheightislimited.Beextracarefulwhendriving
wheretherearetemporaryarrangements,pendulousaerialcablesetc.
Whendrivingintheforestoronaforestroaddorememberthatit
maybedifculttoobserveaeriallinesovertheroad.Besides,these
cablescanhangsurprisinglylowwhentheyarecoveredwithsnow
andice.
WORKINGINTHEVICINITYOFAERIALLINES
When working in the vicinity of aerial lines no part of the mach-
ine or the load is permitted to come nearer the lines than stated
below:
Low tension 2 meters
High tension < 40 kV 4 meters
High tension > 40 kV 6 meters
Ifitisnotpossibletokeeptheabovesecuritydistance,thepower
stationmustbecontactedwiththerequesttocutoffelectricitywhile
oneisworkingthere.Onemustundernocircumstancesrelyongood
luckwhenworkinginthevicinityofaeriallines.Ifitisnotpossible
tohavethepowercutoffonemusttrytomovethetimberbyother
meansbeforeusingthecraneforloading.
ELECTRICITYNEEDSNOCONTACT.HIGHTENSION“HITS”
EVENATAGREATERDISTANCE.

8
The main parts of Terri ATD
1 operation unit
2 cabin
3 control unit
4 grab loader
5 safeguard for displacement of load
6 loading space
7 track operation – bogie system
8 wagon
9 track operation – bogie system
10 winch

9
Instruments and controls
1 parking brake
2 air vents
3 air vents
4 control for winch
5 lockcontrol for double action hydraulic cylinder
6 differential lock (not for Sweden)
7 panel for diesel heater (extra equipment)
8 ventilation fan
9 brake
10 winch control
11 gear lever
12 throttle pedal forward
13 driving lever
13b change-direction switch
13c ow devider-function
14 electrical socket (cigarette lighter)
15 fuse boxes
16 starter lock
17 control for cabin heating
18 hand accelerator
19 air vents
20 switch panel
21 instrument panel
26 emergency hammer

10
Free
Locked
Broms
Brake
P1. Parking brake
Thisleveraffectsamechanicalbrake.Whentheleverismo-
vedbackwardsthebrakeisengaged.Viathebuttonontopof
theleverthelockisunbolted.
2. Front air vents screen
Theairventsregulatethedirectionoftheincomingair.For
defrosterpurposestheairisdirectedtowardsthewindscreen.
3. Front air vents oor
Theairventsregulatethedirectionoftheincomingair.
4. Winch lock
Thewinchlockpreventsthecablefromrunningoutcom-
pletely.Thewinchlockiscontrolledviaaleverontheleft
sideontheinstrumentboard.Thewinchlockisreleased
whentheleverisinitsfrontposition.Releasethewinchlock
andpullthecableout.
Attention! Use protective gloves.
Attention! Never push the driving lever backwards when the
winch is in use. This can cause damage to the gearbox.
5. Double action hydraulic cylinder
Viathedoubleactionhydrauliccylinder,installedbetween
thetractorunitandthewagon,thepositionforthefrontof
thetractorunitcanbeadjustedtodifferentconditions.
Position 1: Operatingleverpushedup=thetractorunit
“oats”free,i.e.thetractorunitcannobstructedly
followtheterrain.Thisisthenormaldrivingposition.
Attention! Spring-loaded locking of the lever in this posi-
tion.

Position 2: Operatingleverincentre,withspring-loadin
 centreposi-
tion=“lockedposition”.
Thepositionofthetractorunitinrationtothewagonis
locked.Thispositionisonlyrecommendedwhendrivingin
lightsnowwithouttrackandwhencrossingaditchorother
obstacle.
Position 3: Bypushingtheoperatingleverforwardthe
frontofthetractorunitgoesdown.Theoperatinglevergoes
owingtothespring-loadbackto“lockedposition”(2)when
releasingthelever.
CAUTION! Do not swivel sharply with the machine when
the front is down.
Position 4: Bypushingtheoperatingleverdownwardsthe
frontofthetractorunitgoesup.Theoperationlevergoes
owingtothespring-loadbackto“lockedposition”(2)when
theleverisreleased.

11
Open
Closed
Practical example:Drivingoveraminorditch.
Raisethefrontsomewhatwhenyouapproachtheditch.
Lowerthefrontbeforethebogieofthetractorunithas
whollycrossedtheditchsothatthefrontpartofthe
bogietouchesthegroundontheothersideoftheditch.
Drivewiththedoubleactionhydrauliccylinderinlock-
edpositionuntilthewheelofthewagonhascrossedthe
ditch.
Continuedrivingwiththedoubleactionhydrauliccylin-
derin“owingposition”(1)
6. Differential lock (not applicable for Sweden)
Thegearboxofthetractorunitisequippedwithamechani-
caldifferentiallock,controlledviaaleverontheinstrument
board.Thedifferentiallockisdisengagedwhentheleveris
initsbottomposition.
7. Panel for diesel heater (extra equipment)
Onthispanelthedieselheateriscontrolled.Seemanualfor
dieselheater.
8. Ventilation fan
Thecontrolhasthreepositions; OFF-LOW-HIGH.
9. Brake pedal
Withthebrakepedalthebrakesforthemachineareapplied.

12
Engaged
Disengaged
10. Winch
Thewinchiscontrolledviaaleverontherightsideonthe
instrumentboard.Whenoneputstheleverintofrontposi-
tion,gear(11)intoneutralposition,wagonoperationdisen-
gaged,drivinglever(13)forwardandonepressesthethrottle
pedaldown,thewinchcableishoistedinontothewinch
cabledrum.
CAUTION!
Prior to operating the winch make sure that the cable
is not damaged. If a cable breaks during operation it
can cause great damage.
Attention! Never move the driving lever backwards when the
winch is in use. This causes that the winch cable is rolled up
in the wrong direction on the winch cable drum.
11. Gear lever
Withthegearlevertwogearscanbechosen.Iftheleveris
movedforwardthehigh-speedgearisengagedandwhenthe
leverisintherearpositionthelowspeedgearisengaged.
Whentheleverisincentrepositionneutralpositionisenga-
ged.
CAUTION!
The machine must never be driven with wagon opera-
tion only. This can cause the machine to tip under certain
circumstances. The low gear of the tractor unit must always
be engaged when wagon operation is engaged.
When driving on uphill and downhill slopes the wagon
operation must always be engaged.
12. Throttle pedal forward
Thethrottlepedalcontrolstheenginespeedduringdriving.
13. Driving lever
Thedrivinglevercontrolssteering.
Whentheleverismovedtotherightthemachineturnstothe
right.Whentheleverismovedtotheleftthemachineturns
totheleft.
Steeringdoesnotautomaticallyreturnto“forward”buthas
tobesteeredbackwiththedrivinglever.
Viathelockthedrivinglevercanbelockedintoneutralposi-
tion.
13b Change-direction switch
Theswitchisplacedfrontofthedrivingleverandhasthree
positions.
Whentheswitchisdownwardsthemachinemovesforward.
Whentheswitchisupwardsthemachinemovesbackwards.
Themiddlepositionsisneutralposition.
13c Flow-devide-function
Theengagebleow-deviderisinstalledbetweenthetractor
unitandwagonsdriveengines.Whenwagonoperationisen-
gagedandtheswitch13cispresseddown,thehydraulicoil
owisdevidedbetweenthehydraulicenginesinthetractor
unitandthewagon.Thisfunctionincreasewagonspulling
powerevenifthewagonisspinning.Caution ! wagon ope-
ration must always be engaged when using ow-devide-
function.
High speed
Low speed

13
14 Electrical socket (cigarettelighter)
Amobilephonee.g.canbeconnectedtotheelectrical
socket.
Fuse boxes
Fusesareanoverloadprotectionoftheelectriccircuits.The
fuseboxesareinstalledinthefrontpartontheinstrument
board.
LIST OF FUSES
No. Amp Consumer unit
VI. 15 Ventilationfan
  Directionindicators
  Fuelpump
  Controllampoillevel
  Controllampoilpressure
  Controllampoiltemperature
  Fuelgauge
  Coolantthermometer
  Cabinlights
  Stoptaillamp
  Enginestoppingdevice
V2. 15 Workinglightsrear,front
V3. 15 Workinglightsside
V4. 15 Instrumentboardlight
  Positionlights
  Rearlights
V5. 15 Wagonbrake
  Trailerdrive
V6. 15 Glow
  Enginestoppvalve
 
H1 15 Headlights
H2. 15 Dippedheadlights
H3. 15 Windscreenandrearscreenwipers
  Windscreenwasher
H4 15 Cigarettelighter
  Signalhorn
H5 15 Radio
  2-levers
H6 15 Extra

14
16. Starter lock
Thestarterlockhasthreepositions,OFF-ON-ST
OFF–locked
ON-unlocked
ST-start(resilient)
17. Control for cabin heating
Theheatcontrolisstepbystepoperated.
Whenthecontrolleristurnedtotherighttheheatisoffand
whenthecontrolleristurnedtotheleftonegetsmaximum
heat.
18. Hand accelerator
Whenoperatingthegrabloadertheaccelerationoftheeng-
inecanbeadjusted.Forquickadjustmentpressthebutton
andpullthecontrolleruntilrequiredaccelerationisattained.
Forprecisionadjustmentturnthecontrolleruntilrequired
accelerationisattained.
19 Rear air vent screen
Theairventscontrolthedirectionoftheincomingair.For
defrosterpurposestheairisdirectedtowardstherearwin-
dow.

15
20. Switch board
20.1 Control for direction indicators
Ifthebuttonispresseddownwardstheleftdirectionindica-
torwillash.Ifthebuttonispressedupwardstherightdirec-
tionindicatorwillash.Thecontrollampasheswhenthe
directionindicatorisengaged.
Attention! If a lamp has fallen out the control lamp is as-
hing faster.
20.2 Light change over switch
Thelightchangeoverswitchswitchesthelightfromhead
lightstodippedlights.Thecontrollampisalightwhenthe
headlightsisengaged.
20.3 Switch for dipped lights
Thecontrollampisalightwhenthedippedlightsareenga-
ged.
20.4 Switch working light front
Extraequipment.Thisswitchturnsthefrontworkinglights
on.Thecontrollampisalightwhenthefrontworkinglightis
engaged.
20.5 Switch working light side
Thisswitchturnsthelightsonthesidesofthemachineon.
Thecontrollampisalightwhenthesidelightsareengaged.
20.6 Switch working light rear
Thisswitchturnstherearworkinglightson.
Thecontrollampisalightwhentherearlightisengaged.

16
20.8 Extra switch
Hereisaplaceforanextraswitchforaccessoriescanbe
installed.
20.9 Windscreen wipers
Thispushbuttonoperatesthewindscreenwipers
20.10 Push button for horn
Ifthepushbuttonispresseddownthehornwillsound.
20.11 Wagon operation
Thispushbuttonengagesanddisengagesthewagonopera-
tion.Thecontrollampisalightwhenwagonoperationis
engaged.
Attention! Driving with wagon operation engaged only with
low speed gear.
20.12 Trailer brake
Thetrailerbrakeisappliedandreleasedwiththeswitch.
Theindicatorisalightwhenthetrailerbrakeisapplied.
Whentheoilpressuredropsbelow10bar,appliesthetrailer
brakeautomatically.
N.B. The trailer brake is a parking brake. Always release the
trailer brkae when driving the machine; the brake may oth-
erwise be damaged.
20.13 Wiper and washer for rear window
Theswitchhastwopositions.Therstpositionsstartsthe
wiperandthesecond,theresilientpositionstartsthewasher.
Attention! The rear window has a protective pane being very
resistant against knocks and impacts. However it is not as
scratch resistant as normal glass. Therefore never engage
the wiper on a dry pane. Neither should you clean the pane
with a dry cloth.

17
21 Instrument board
21.1 Revolution indicator
Therevolutionindicatorshowstherotationspeedoftheen-
gine.
21.2 Working hours indicator
Thisindicatorshowstherunninghoursofthemachine.The
indicatorisengagedwhentheengineisrunning.
21.3 Temperature control for hydraulic oil
Showsthetemperatureofthehydraulicoil
21.4 Engine temperature indicator
Theenginetemperatureindicatorshowsthetemperatureof
thecoolantoftheengine.Whenrunningnormally,withthe
enginewarm,thetemperatureshownshouldbe90–95de-
grees. 
21.5 Fuel meter
Registersthefuellevelinthetank.
21.6 Control lamp oil pressure engine
Thecontrollampshouldbeoutwhentheengineisrunning.
However,iftheoilpressureoftheenginedropsbelow0.5
barthecontrollampwilllightup.Ifthisshouldhappen,stop
theengineimmediatelyanddeterminethesourceofthetrou-
bleandtakecareofitbeforeyoustarttheengineagain.
21.7 Glow indicator
Theindicatorbecomesextinctwhentheglowingprocessis
completed.
21.8 Charging control lamp
Normallythelampshouldbeoutwhentheengineisrunning.
Ifthelamplightswhilerunningthisindicatesthatthereis
afaultintheelectricalsystemandthesourceofthetrouble
mustbedeterminedandtakencareof.
21.9 Warning lamp for low hydraulic oil level
Thewarninglampwilllightupwhenthehydraulicoillevel
dropstothelowestlimit.
1/minx100

18
22. Control for crane
Seeseparateoperationinstructions
23. Throttle pedal rear
Controlstherotationspeedoftheenginewhenengagingthe
crane.
24. Fire-extinguisher
Thereextinguisherisa2-kilogrampowder-extinguisher.
Foroperationseetheinstructionsfortheextinguisher.
CAUTION!
Inspect regularly that the manometer needle is
within the green eld.
25. Main switch
Theentireelectricsupplycanbeturnedoffwiththemain
switch.
Attention! Never turn off the main switch while the engine is
running.
CAUTION!
The main switch must be turned off when carrying out
service- and maintenance measures on the machine!
26. Emergency hammer
Whenthewindscreenisudesasemergencyexit,smashthe
screenwiththehammer,placedinsideontherightinthe
cabin.
Driving seat
The swivelling of the driver’s seat
Thedrivingseatcanbeswivelledandxedinthreeposi-
tions.Forwardfordriving,60degreestotheleftforentering
andleavingthemachineaswellasbackwardsforoperating
thegrabloader.Theseatisdetachedviafootpedal1.
Adjustment of the driving seat
Viacontrol2theseatcanbemovedforward–backwards.
Viacontrol3theverticalspringingoftheseatisadjusted.
Thespringingcanbeseenonthescaleandthesetvalue
shouldcorrespondtotheweightofthedriver.
Viaknob4theheightofthearmrestisadjusted.
Viacontrol5theseatheightofthefrontpartoftheseatis
adjusted.
Viacontrol6theseatheightoftherearpartoftheseatisad-
justed.Byalternatelyraisingandloweringthefrontandrear
partoftheseattheheightoftheseatcanbeadjusted.
Viacontrol7theangleofthebackrestoftheseatcanbead-
justed.

19
STARTING THE ENGINE
Routine measures prior to starting the engine
Ø  Seetoitthatthethrottlepedalreturnsautomatically
to   neutralposition
Ø  Seetoitthatthedrivingleverisincentreposition
and  thewinchisdisengaged.
Start with cold engine
Turntheignitionkeytopositiondriving(ON).Nowthe
glowindicatorandthecontrolsforchargingandoilpressure
willbecomealight.Whentheglowindicatorlampbecomes
extinctturnthekeytostartposition(ST)-
Seetoitthattheignitionkeyautomaticallyreturnstoposi-
tion“driving”(ON)whentheengineisrunning.
Duringextremelycoldweathertwo“glowings”insucces-
sionof15secondsmayberequired.Bygivingfullthrottle
theinjectionpumpsuppliesmaximumamountoffuel.
Donotrunthestartermotorcontinuouslyformorethan10
secondsatatime.Repeattheglowingpriortothenextstart
attempt.
Engine pre-heater (optional)
Duringcoldweatheritisadvisabletouseanelectricordie-
seloperatedenginepre-heaterthatwarmsthecoolantofthe
engine.
Warming up
Theenginerequiresabout4to5minutesofwarminguptime
beforethemachinecanbeusedforfulloperation.
Start with warm engine
Ifstartingwithawarmenginenoglowingisnecessary.Turn
thekeydirectlytostart(ST).
Stopping the engine
Lettherotationspeedoftheenginegodowntoidlingspeed
andturntheignitionkeytoposition“OFF”.
CAUTION!
When you leave the machine:
Put down the grab loader, stop the engine, switch
off the main switch and take the ignition key
with you when you leave the machine. By doing
so you make sure that all current consumers are
disengaged and unauthorised persons cannot
start the machine.

20
DRIVING
The gearbox of Terri is of pre-selection type with 2-speed.
This implies that changing may only be done when the ma-
chine is stationary.
Ø Releasethebrakes
Ø Putthepositionofthedoubleactionhydrauliccylinder
 to“oatingposition”
Ø engageagear(high/low)
Ø Chosedirectionviathechange-directionswitch13b.
Ø Increasetherotationspeedoftheengineviathethrottle
 pedal.
Therotationspeedoftheengineregulatestheamountof
oilgettingtothehydraulicmotorsandthusthespeed.The
speedcanthereafterbecontrolledwiththerotationspeedof
theengine(throttle).
Stopping the engine
Theenginestopsifthethrottlepedalreturnstoitsidleposi-
tionorifthedriving-direction-switchisputtocentreposi-
tion.Iftheswitchisincentrepositionthehydrauliccircuitis
closedandthehydraulicsystemhasaslowingdowneffect.
(Seetextaboutbrakes).

Driving with wagon operation
Wagonoperationmayonlybeengagedwhenthelowspeed
gearisputin.Ifthewagonoperationisengagedwhenthe
highspeedgearisengagedtheoilowtothewagonengines
isnotsufcientwiththeresultthatthewagonisslowed
down.