URAL Motorcycles 4320-10 User manual

URAL-4320-10,
URAL-4320-31
TRUCKS
ANDTHEIRMODIFICATIONS

URAL-4320-10,
URAL-4320-31
TRUCKS
AND THEIRVERSIONS
OperationManual
4320-3902035-10 Э
(Ninthedition,revised& enlarged)
©URALAZ.
Nopartof the bookorthe wholebook
maybereprintedand
copiedwithout
the priorwrittenpermissionof the
«URAL»AutomobileWorks»
Open-EndJointStock Co.
Miass –2003

2
ThisManualisintendedfordriversandmotortransportworkerswhoarein-
volvedinoperationof URALtrucks.Specificationsof thetrucks,briefdescriptionof
theircomponentsandassemblyunitswithillustrations,operating requirements,a
listof maintenanceoperationsandreferencedataaregivenin the Manual.
Inconnectionwithcontinuousworkrelating to improvementof the product,
whichincreasestheirreliabilityandimprovesitsoperatingconditions,particular
alterations,whicharenot highlightedinthisedition,canbeintroducedinthe de-
sign.Whenusing the trucks,thisOperationManualandthe Manualforthe power
unitmanufacturedbyYaroslavlMotorWorks,technicaldescriptionand“AirHeat-
er” Installation Manualshouldbeapplied.

3
FOREWORD
URALtrucks (6x6) withYAMZ-236M2andYAMZ-238M2dieselengines
manufacturedby“Autodiesel”JointStockCo., Yaroslavl,Russia,withathree-seat,
all-metalcablocatedbehindthe engine,isintendedfortransporting cargoes,
peopleandtowingtrailersonallkindsof roadsandterrain.Thebasic modelsare
URAL-4320-10 (Fig.1)andURAL-4320-31 (Fig.2)multi-purpose trucks devel-
opedbymeansofupdating URAL-4320 truck,wherehyphens –10and31(30)
indicatethe modelof the engine(i.e.YAMZ-236M2andYAMZ-238M2corre-
spondingly)installedinto the truck.
Fig.1. URAL-4320-10 truck
Fig. 2. URAL-4320-31truck
URALtrucks aredesignedforoperationatambienttemperaturesrangingfrom
+50°C down to –45°C (ashort-timeoperationat–50°C).
The following versionsaremanufacturedonbasisof URAL-4320-31and
URAL-4320-10 trucks:
- URAL-43202-0351-31 general-transportationtruck withawoodenplat-
form body;

4
- URAL-4420-10 andURAL-4420-31 bolstertrucks intendedfortowing
specialsemi-trailersonallkindsof roadsandterrain;
- URAL-44202-0311-31 bolstertruck designedfortowingsemi-trailerson
all kindsofroads;
- URAL-44202-0612-30 bolstertruck designedforpullingsemi-trailerson
airfieldseven sites;
- URAL-4320-0911-30 truck withanenhancedbaseintendedfortranspor-
tation of cargoesandpeopleon allkindsof roadsandterrain;
- URAL-4320-0611-10andURAL-4320-0611-31 trucks equippedbya
wooden platformbodyandacanopyintendedforcargotransportation.
The chassis-cabswiththesimilarspecifications(including chassis-cabsfor
wagonbodies)aremanufacturedonthe basisof the trucks.The truckswithvarious
completesets,i.e.thosewithawinchorwithoutit, having adifferentlocation of the
sparewheelholder:behindthe cab,atthe rearof the chassisframe(withanupright
orhorizontalarrangement)ortrucks withoutaholder,buthavingatemporaryfas-
teningonthe chassisframe,withpowertake-off fromthe gearbox(PTO)ortrans-
ferbox(auxiliaryPTO),withadrawbaravailablefortowingsemi-trailersorwithout
it, canbeproduced.
Itisallowedto usethe trucks withpull-typesystems,whichhaveairoutlets
asperGOSTR50023 Standard andelectricoutletsasperGOST9200 (versionII),
the brakesystemairoutletasperGOST4364 Standard,the brakesystemsasper
GOSTR41.13Standard,agross weight, correspondingto the specifications,anda
drawbarfortrailersasperGOST2349Standard oracoupling pivot asperGOSTR
41.55 Standard forsemi-trailershaving “A”diameterasperGOST12017Standard
thatisequalto 50.8mmandmounting dimensionsasperGOST12105Standard for
ratedloadon the fifthwheelfrom49.0kN(5.0tf) to 83.4kN(8.5tf).
The trailers,models782B(2PN-4M),GKB-8350,andOdAZ-935,OdAZ-
9370 semi-trailers–forURAL-44202-0311-31trucksarethe maintrailersand
semi-trailersforthe saidtrucks andbolstertrucks.
Onthe basisof URALtrucksandchassisvariousproducts(tanktrucks,crane
trucks,oilfieldequipment, vans,etc.)aremanufacturedaswell.All commentsand
proposalsregardingtheirworkshouldbereferredtomanufacturersof thoseprod-
ucts. Mounting of variousequipmentandmechanismsonto thetruckanditschassis
isallowedonlyafteragreeing ituponwith theEngineeringDepartmentofthe
“URAL”Automobile Works.Otherwise,acustomershall bedeprivedto makeany
claimsrelating toprematurefailureof truck components.
MarkingofURALtrucksandchassis-cabs comprisesthe truckmarkingasa
wholetransportmeans,markingof the chassisandcabasconstituentpartsof the
transportmeansandenginemarking.
The truck asawholetransportmeansismarkedonthe manufacturer’splate
fixedto the r.h.panelof thecab bonnetnearbythe footstep.The platecontainsthe
trademark,atruck modelwithindicationof itscompleteset, VINidentification
number(17symbols),andan enginemodel.
Structureof the vehicleidentificationnumberanditsexplanation:
1 2 3 4 5 6 7 8 9 1011121314151617
1 Р4 3 2 0 0 0 *
* * * * * * *
*-Variabledata

5
Item1-3 –X1P–“URAL”AutomobileWorks”JSC,Miass,Chelyabinsk
Region,Russia (manufacturer’sinternationalidentification
code)
Item4-9 – Productdenomination
Item10 – Yearof manufacture
Item11-17– Serialproductionnumberof vehicle
Digitsusedforindicatingthe yearof manufacture:
1– 2001 3– 2003 5- 2005
2– 2002 4 – 2004 6 - 2006
The chassisasaconstituentpartof the vehicleismarkedonitsframeatthe
rearof ther.h.sidememberatadistanceof 1000 -1250mm backwardsfromthe
rearbogieaxisand40–60 mmdownward fromthe sidememberupperflange.The
marking contains14 symbolsandisappliedbyhammering.
The cabasaconstituentpartof the vehicleismarkedonitsr.h.sideinthe
direction of the truck movementatthe bottomof the dooraperturebetween the two
frontholes.The markingcontains14 symbolsandisappliedbyhammering.
Dataonenginemarkingaregivenin«YAMZ-236M2,YAMZ-238M2En-
gines»OperationManual.
SAFETY REQUIREMENTSANDPRECAUTIONS
SAFETYREQUIREMENTS
1.Beforestarting work,makesurethatthe truck anditscouplingdevicesare
ingoodworkingorder.
2.Putthe truck onaflathorizontalsiteforitsserviceandrepair.Engagethe
truck parkingbrake,switchoff the storagebattery,cutoff the fuelfeedbypulling
the enginestopleverasfarasitwillgoandputchocks underthe wheels.
3.Keeptheengineandthe starting preheatercleanandingoodworkingor-
der.Donot allowfuelandoilto leak:itcanserveasareasonoffire.Whenthe
preheaterisengaged,the drivershouldstaynearthe truck.
4.Donot warm up the engine,ifthe truck isindoors,andventilationispoor.
5. Cooling (low-freezing)liquidsandbrakefluidsaretoxic,handlethemwith
duecare.
6.Whenservicing the engine,fixthe hoodliftingmechanismwithasafety
hook1(Fig.3).
7.Toclimbthe truck bumperandcomedownfromitusethe step,the central
andextremeleftribs(inthe directionof the truck travel)of theradiatorgrill,which
haveinsertson the inside(Fig.4).
8.Priorto removing awheel,fixthe truck byputtingchocksunderthe other
wheels,whichwill not belifted,to avoidthe truck rollingdown.Slackenthe wheel
nutsandafterthatliftup the wheelwiththehelpof ajack orotherhoistinggear.
Toliftthe frontaxlewiththe jack insertitsscrewheadinthe springclamp
socket;to liftthe rearaxle– underthe springsupporting bracket.
9.Itisprohibitedto removeanywheelfromthe truck,ifall airhasnot beenlet
outof itstyrebefore.
10.Itisprohibitedto mountajustassembledanduninflatedwheelwithitstire
onto the truck andinflatethe tireusingthe tireinflation system.

6
Fig.
3. HoodLifting
MechanismSafety Lock:
1-safety hook
Fig.
4. HowtoUseStep andRadi
a-
torGrill Ribs, When Climbing
Bumper andComing Down It
Aspecialcautionisgivenbythemanufacturerregardingthenecessityto
observesafetyrulesstrictly,whenmountingthetyres(see chapter“wheelsand
tyres”).
11.Whilelowering the sparewheel,keepyourselfoutof reachof the wheel
holderhingedbracket.
12.Itisprohibitedto usethe truck withoutlock spring ring 14 (See Fig.92) and
wingednut7of the storagebatterycompartmentcover.
13.Toavoidfalling downthe storagebatteriesinthe courseof theirservicing
onthe truckmovethebatteryoutofthecontaineronlyonthe containerhinged
cover,makesureitisfixedsecurelyin itshorizontalposition.
14.Check conditionof the insulationof the wirefrom“+” batteryterminalto
the starter.Damagedinsulationcancausefire.
15. When upgrading,selectthe requiredgearingoodadvance.
16.When carryingpassengersin cab,fixthe r.h.doorlock of the cab byturn-
ingthe lock handledownwards.
17.Whencrossing guttersorroughground,donot allowthe semi-trailer
frontto thrustagainstelementsof the bolstertruck,becausethe semi-trailer
kingpincangetfree fromthe fifthwheelcatches(spontaneousunhitching).
18.Hitchandunhitchthe trailer(semi-trailer)on an evenflatside.
19.Beforeunhitching the bolstertrucks,the semi-trailersupportrollers
shouldreston the ground.Unhitching isnot allowedifthereareclearancesbetween
the rollersandground.
20.When using the winch:
-donot stayunderthe cargoto betransferredaswell ascloseto the ten-
sionedrope;
- avoidkinks orknotson the ropeasthey can resultinitsdamageandbreak.
Whenextending the ropeacross the road,putaguard andwarningsignsprohibit-
ingto pass.
21.Perform welding onthe truck,observing firesafetymeasures.Connectthe
weldergroundconductorcloseto theweldspot, having preventedthe electriccur-
rentpassing throughbearingandfrictionpairs.
22.Ifitisrequiredto dismantlethe powerunitonURAL-4320-10 trucks
with adiaphragmclutch,screwaneye boltinto the rearendof the cylinderhead.
The eye boltisenclosedin the boxof truck spareparts,toolsandaccessories.

7
23.Whenthe truckoperateswiththe autonomousheating unitrunning,itis
prohibited:
- to sleepin the cabwiththe autonomousheating unitrunning;
- operation of the unitwiththe suction andexhaustbranchpipescompletely
orpartiallycutoff;
- refuelling the truck withheatingunitrunning;
- to leavethe running heatingunitwithoutsupervision;
- startandoperation of the unitpouredoverwithfuel;
- to usethe heating unitwithoutagasexhaustpipe.
Whenusing the autonomousheating unit, mindifnocareistakeninthe
courseof itsoperation,aswell asitsfaultscanbethe reasonof fireorpoisoningby
exhaustgases.
PRECAUTIONS
Properoperationof thetruckanditslong servicelifecanbeensuredifyou
observeall recommendationsgiveninthisManual.
1.Whenrunningthe first1000 km(50hoursof engineoperation),complywith
the rulesdescribedin Section“Running-in (Operation)of NewTruck”.
2.Aftertheenginecoldstarting donot allowitto operatewithahighengine
speed.
3.When the engineisrunning atafull load,itsinstantaneousstopisnot per-
missible.The engineshouldrunatitsminimumidling speedwithin 1-3min.
4.Topreventairpenetrationinthe fuel-feedsystemdonot burnall the fuel
fromthe fueltank.
5. Afterthe truckhasrunadistanceof 1000km(50hoursofengineoperation)
andthe technicalmaintenanceisperformedafterrunning-in,the networkbe-
tweenthe airintakenozzleandconnectingpipeof the engineintakemanifolds
shouldbedismantled,butthe gasketshouldbekept.
6.See thatthepreheaterfuelpumpisadjustedcorrectly,notallowing open
flameinthe gasconduitof the heatexchanger.
7.Donot allowthe preheaterto operateformorethan 15secwithoutacoolant
inthe heatexchanger.Uponwashingthe truck of itsfording,engagethe pumpunit
for2-3minto removewaterfromthe preheaterairduct.
8.Starttravelling afterthecoolanthasbeenheatedup to 40°Cminimum.The
optimumtemperatureof the fluidshouldbe75-100 °C.
9.Todrainthe fluidfromthe enginecooling systemcompletely,placethe
truck on aflatsiteorinclineitforward.
10.Drainthe coolantfromtheenginecooling systemthroughthreecocks(on
the heatexchanger,on the pumpunitandon the waterpumpinletbranch)withthe
opencabheatercock andthe openplugsof theradiatorandpreheaterfilling pipe.
Ifwaterisusedinthe enginecooling systeminanemergencysituation,removethe
restofwaterfromthe preheaterliquidpumpbyengagingthe pumpunitfor10-15
secto avoidthe fanimpellerfreezing-on.Upon draining the fluid,closethe cocks.
11.Atanambienttemperaturelowerthan–10 oC,cutoff theoilcoolerby
closing the cock locatedon the cylinderblock.
12.Travelling withthe lockeddifferentialinthe transferboxonhard anddry
roadsisnot recommended,becauseitresultsinthe rapidwearof the differential
andtires.The locking levershouldbesetinthe extremefrontposition,whenthe
differentialisunlocked.

8
13.Whenmoving the truck outof the track,donot travelwiththe steering
wheelturnedinthe extremepositionforalong time,becauseitcancauseover-
heating of the oilinthe steering hydraulicsystemandthe pumpfailureasaresult.
By the samereason,ifthepoweristaken off theengineundersteady-statecondi-
tions,releasethe loadfromthe steering controlshaftbyturningthe steering wheel
untilitturnsfreely.
14.Beforethe truck startstravelling,the airpressureinthe brakesystem
shouldbenot less than400 kPa(4kgf/cm2). Ifalarm lamp4(see Fig.13) onthe
dashboard turnsonandthe horn (buzzer)isengaged,remedyafaultoccurredin the
pneumaticpartof the drive.
15. Whenthe truck operates,especiallyunderheavy-dutyconditions(sand,
muddyroads,etc.), takecareofconditionof the brakesandadjustthe clearance
betweenthe shoesanddrumsinduetime.Ifafaultoccurs,pilot lamp3(see Fig.
13) onthedashboard isON.Inthiscaseremedythe faultinthe hydraulicpartof
the brakedriveoradjustclearancesin the servicebrakes.
Ifthe parkingbrakeisnot efficientenough,donot adjustclearancesbetween
the parking brakeshoesanddrumwithtierod4(see Fig.84) toavoidfailureof the
parkingbrakecomponents.
16.Beforetravelling,check ifthealarmsof thepilot lampassemblies(see
Fig.13) areingoodworking order.
17.Donot usethe truck withthe loweredtailgate,becauseinthispositionit
closesthe rearsignalling lights.
18.Ifthestarterhasswitchedonrepeatedly(repeatedswitching-on1–2min
afterbreak)andthe enginehasnot beenstartedorhasstalledbyanyreasons,first
setthekeyinto itsinitialuprightposition.Frequentstarting of the enginewithits
short-term operation resultinquick dischargeof the storagebattery.
19.Donot movethe truck withthe helpof the starter,becauseitcanbea
reason of the starterfailureandquick dischargeof the storagebattery.
20.Toavoidthe generatorfailureconnectthe wirefromthe startertothe“+”
terminalof the storagebattery,andthe wirefromthe storagebatteryswitchto its
“–”terminal.
21.Connectwiresto the generatorandvoltageregulatorinaccordancewith
the marks appliedon theseproducts.
22.Priorto removingthe generatorfromthe engineswitchoff the storage
battery.
23.Duringlong-term parking of the truck disconnectthe storagebatteryfrom
the “ground”withthe helpof the “ground”switchbutton (see Fig.21).
24.Whenstarting the enginefromanexternalsourcethroughtheexternal
starting socket, itisrequiredto switchonthe storagebattery.Itisprohibitedto use
adirect-currentsourcewithratingsexceeding24 Vatacurrentof 0(zero)Aand
18.3Vatacurrentof 1000Aandthe storagebatterythathasaratedcapacitydif-
ferentfrom190 A.hbymorethan +20 A.h.
25. Removalof theseals(2pcs.)fromthespeedometerdriveflexibleshaftde-
privesacustomerto makeanyclaims.
26.Atanambienttemperaturelowerthan–15°C useanauxiliarypower
take-off onlyafterashortrun(approximately,15km)orwarming-up of the oilin
the transferboxbyothermethod,forexample,byhot air.
27.Whentowing atrailerthatlimitsmanoeuvrabilityof thetruck,removethe
rearbumpers.
28.Duringthe truck travelling the wheelvalvesof the tirepressurecontrol
systemshouldbeopened.

9
Whenthetruck hasbeenparkedforalong time,closethewheelvalves.Atan
ambienttemperaturelowerthat–35 °C open the wheelvalves15–20kmafterbe-
ginningof travel.
Uponopeningthe wheelvalvesblowthroughthe tirepressurecontrolsystem
withthe airfromthe tires(see the Section “CentralTirePressureControlSystem”).
29.Whentowingthe truck withthe shut-downengine,the primaryandin-
termediateshaftsofthegearboxdonot rotate,andinthiscasetheoilpumpdoes
not operateanddoesnot delivergreaseinto the bearingsof the mainshaftgears
andonconicalsurfacesof the synchronizers,anditwill causeseizing of the sliding
surfaces,wearof the synchronizerringsresultsinfailureof the wholegearbox.
Toperform towing disengagethe clutchandshiftthe direct(fourth)gearin the
gearboxordisconnectthe gearboxfromthetransmission.Towing of the truck fora
distanceexceeding 20 kmwithoutdisconnecting the cardanshaftorpressing the
clutchwiththe engagedgearboxisnot permitted.
30.Manoeuvring,particularlywhilereversing,donot allowbiganglesof the
roadtrainfolding toavoiddamageof the drawbar.
31.Whenusing atraileratanambienttemperatureless than-25°C,donot
leavetherubberbufferof thedrawbarunderloadbeforealong parking to avoid
freezing of the pressedrubberbumperandappearinganaxialclearanceinthe
drawbar.Disconnectthetrailerorunloadthe axialloadfromtherubberbufferby
moving the truck forwardsandbackwards.
32.When aloaderhaving atotalweightexceeding 3200 kg isrunning onto the
truck platform,putshields(boards)underitswheels.
33.Putheavysmall-sizedcargoes,whichcancauselocalsaggingof the plat-
form floorordamagethebodysidesandseatcomponents,onto sills(boards)and
fixthemsecurely.Placethe cargosothatitscentreof inertia islocatedin the mid-
dleof the truck platform.
34.The truckloading heightwasincreasedonURAL-4320-0611-10truck.
Dueto increasingthe truck centreof inertiaitsstaticlateralstabilitydecreased.
35.Inconnectionwithincreasingthe effortonthe diaphragmclutchpedal
withoutapneumohydraulicboosteranddueto the factthatthe clutchcannot be
released,ifthepressureisnotavailableinthesupplying bottleof theclutchre-
leasing aircylinder,itisnot recommendedto parkthe truck withanengagedgear
foralong time(exceeding fourhours).
Ifafterparking the truck foralong timeorforthereason ofhighairleaks,the
completeairleakageoccurredandthe gearisengaged,itisnecessarytodisengage
the gear(setting inthe neutralposition)byalternateturning the enginecrankshaft
to the rightandleftthroughapproximately180 o,using the techniquedescribedin
the Section“Adjustmentof ValveTiming Mechanism”of theOperationmanualfor
YAMZ-236M2andYAMZ-238M2trucks orreleasethe clutchbyfilling the
pneumaticsystembythe compressedairwiththe helpofanothertruck via the
towingvalve.
36.URAL-44202-0311-31*bolstertrucks equippedbylighting devicesin
conformitywithGOSTR41.48 Standard canonlyoperatewithsemi-trailerswhich
haveadistancefromthe pinto the nearestpartof the mechanismof the semi-
trailersupporting devicenot less that2000 mm.
__________________________________
* Forthe trucks deliveredforcivilneeds.

10
SPECIFICATIONS
Parameter Ural-4320-10
Ural-4320-0611-10 Ural-4420-10
1 2 3
GENERAL
Payload,kg
5000 -
Payloadon chassis,kg
5875 -
Semitrailerweightfalling on
tractorfifthwheel,kg
- 5500
Truck Kerb Weight, kg 8795*
1
8161
ChassisKerb Weight, kg
7605 -
Gross Vehicle/RoadTrain
Weight(GVW),kg 14 095*1 23 615/20 915*2
Kerb VehicleWeightdistribution,
kg:
on frontaxle
on rearbogie
4225*1
4570*1
4205
3905
GVWdistribution,kg:
on frontaxle
on rearbogie
4520*1
9575*1
4630
9285
Gross Trailer/SemitrailerWeight,
kg
11 500/7000*
2
18 500/12 500*
2
OPERATIONALDATA
Maximumtravelling speedof
GWVtruck/roadtrain,km/h 85/82*3 75
Estimatedfuelconsumption*4,
l/100 km,not more:
atspeed40 km/h:
singletruck/chassis
roadtrain
atspeed60 km/h
singletruck/chassis
roadtrain
30
-
35
-
-
40
-
48

11
1 2 3
Cruising range,km,not less:
atspeed40 km/h:
singletruck /chassis
roadtrain
atspeed60 km/h
singletruck/chassis
roadtrain
1100
-
980
-
-
860
-
715
Braking distanceat60 km/h,
when applying servicebrake
system,m,not more:
Gross VehicleWeight
Gross Combination
Weight(GCW)
36.7
-
Maximumgradeability,degree
(%),not less:
GVW
GCW
31(60)
19(34)
-
15(27)
Minimumturning radiuson
track axisof front(outer
relativeto turn centre)wheel,
m,not more
10.8
Obstaclesto beovercome,m:
widthof ditch/trench
heightof uprightwall
depthof hard-bottomford
0.6
0.55
0.7*5
*1Forthe Ural-4320-10 truck equippedwithawinch
*2Whenoperating on badnaturalroadsfeaturing someheavysections;forthe
Ural-4320-10 truck alsowhen operating on roadless terrain.
*3Fortrucks having finaldriveratio7.32.
*4Estimatedfuelconsumptionservesto estimatetechnicalconditionof a
truck,andisnot consideredasarateforoperation.
*51.2-whenapplying onthe truck awaterproof engineandsealing system
forunitsandaggregates.

12
Parameter Ural-4320-
31
Ural-43202-
0351-31 Ural-4320- 0611-30
1 2 3 4
GENERAL
Payload,kg 6000 7000/5000*
1
7000
Payloadon chassis,kg 6435*
2
7850/5850*
1
-
Semitrailerweightfalling on
tractorfifthwheel,kg - - -
Truck Kerb Weight, kg 9170*
2
8690 8715
ChassisKerb Weight, kg 8,320*
2
7,690 -
Gross Vehicle/RoadTrain
Weight(GVW),kg 15470*2 15990/13990*1 16015
Kerb VehicleWeightdistribution,
kg:
on frontaxle
on rearbogie
4500*2
4670*2
4380
4310
4390
4325
GVWdistribution,kg:
on frontaxle
on rearbogie
4910*2
10 560*2
4965
11 025
4975
11 040
Gross Trailer/SemitrailerWeight,
kg 11 500/7000*1
OPERATIONALDATA
Maximumtravelling speed,
km/h:
GVW
GCW
85/82*3
80/73*3
80/75*3
75/70*3
Maximumgradeability,degree
(%),not less:
GVW
GCW
31(60)
19(34)
27 (50)
15(27)
15(27)
-
Estimatedfuelconsumption*
4
,
l/100 km,not more:
atspeed40 km/h:
singletruck/chassis
roadtrain
30
34
31
-
32
40

13
Ural-4420-31 Ural-44202-
0311-31 Ural-44202- 0612-30 Ural-4320- 0911-30
5 6 7 8
10 000
- - - -
5500
8100/5500*
1
12 000 -
8340 8320 8085 9700
- - - -
23 840/21140*1 27720/21120*1 38 750 20 000
4525
3815
4570
3750
4425
3660
4905
4795
4940
9200
5005
11 715
5300
15600
5165
14 835
15200/12 500*1
19 100/12 500*1 30 000 -
75
75
-
75/70*3
-
65
80/75*3
75/70*3
-
15(27)
-
15(27)
15(27)
-
15(27)
-
-
40
-
40
-
40
32
46

14
1 2 3 4
atspeed60 km/h:
singletruck/chassis
roadtrain
35
-
38
-
40
49
Cruising range,km,not less:
atspeed40 km/h:
singletruck /chassis
roadtrain
atspeed60 km/h:
singletruck/chassis
roadtrain
1100
-
980
-
925
-
750
-
900
720
720
590
Minimumturning radiuson track
axisof front(outerrelativeto turn
centre)wheel,m,not more
10.8
Braking distanceat60 km/h,
when applying servicebrakesys-
tem,m,not more:
GVW
GCW
36.7
38.5
Braking distanceat40 km/h,
when applying auxiliarybrake
system,m,not more:
GVW
GCW
33.8
35.0
Obstaclesto beovercome,m:
widthof ditch/trench
heightof uprightwall
depthof hard-bottomford
0.6
0.55
0.7*5
*1When operating on badnaturalroadsfeaturing someheavysections;forthe
Ural-4320-31truck alsowhen operating on roadless terrain.
*2Forthe Ural-4320-31truck equippedwithawinch.
*3Fortrucks having finaldriveratio7.32.
*4Estimatedfuelconsumption servesto estimatetechnicalcondition of atruck,
andisnot consideredasarateforoperation.
*51.7m- when applying on the truck awaterproof unitandsealing system
forunitsandaggregates(including fan coupling).

15
5 6 7 8
-
48
-
46
-
64
40
49
-
860
-
715
-
720
-
625
900
720
720
590
900
720
720
590
10.8
13.0
36.7
38.5
33.8
35.0
0.6
0.55
0.7*5

16
Parameter
Ural-4320-10
Ural-4420-10
Ural-4320-0611-10
Ural-4320-31
Ural-43202-0351-31
Ural-4420-31
Ural-44202-0311-31
Ural-44202-0612-30
Ural-4320-0611-31
Ural-4320-0911-30
1 2 3
ENGINE
Type,model YAMZ-236M2diesel,
four-stroke,with
compression ignition,
six-cylinder,V-type
YAMZ-238M2diesel,
four-stroke,withcom-
pression ignition,eight-
cylinder,V-type
Displacement, l 11.15 14.86
Ratedpower,gross,kW (hp) 132 (180) 176 (240)
Maximumtorque,gross,N.m
(kgfm) 667 (68) 883 (90)
Speed,min
-
1
:
atratedpower 2100
atmaximumtorque 1250-1450
Crankshaft’ssenseof rota-
tion asperGOST22836-77 Right-hand(clockwiseasviewedfromthe fan side)
FUELFEEDSYSTEM
Main fueltankcapacity
*1
,l 300
*
2
(filling capacity290)
TRANSMISSION
Clutch YAMZ-236K
*
3
,twin-
disc dryfriction type,
mechanicallydriven,
withairbooster
YAMZ-238
*
3
,twin-disc
dryfriction type,me-
chanicallydriven,with
airbooster
Gearbox YAMZ-236U,mechanical,three-way,five-speed
typesynchronizedin second,third,fourthandfifth
gears
ratios firstgear- 5.22;second2.90;third -1.52;fourth
-1.0;fifth- 0.66;reverse– 5.22
Transferbox Mechanical,two-speedtype,withinteraxlecy-
lindricallockeddifferentialdividing torquebe-
tween frontaxleandrearaxlebogiein one-to-
tworatio, withcontinuousengagementof front
axledrive
Ratios:
highspeed 1.21
lowspeed
2.15

17
1 2 3
Cardan drive Open-type,withfourshafts,withjointsmountedin
needlebearings.Anadditionalcardanshaftwith
intermediatesupportisintegratedinto the inter-
mediateaxledriveon the trucks andspecialchassis
featuring an extendedwheelbase
Axles Driving,combinedaxlecaseconsistsof acast
middlepartandhalf-axlecasingspressedinit.
The frontaxleisasteering one,withconstantve-
locityjointsof disk-type
Finaldrive Dual-drive,tandem-type,spiral-
toothbevelgear
coupleandhelical-toothspurgearcouple.Final
drivesof all truck axlesareinterchangeable.
Differential:symmetrical,bevel-type,withfour
satellites.Half-axles:floating,splinedjointwith
hub
ratio 8.05or7.32,or6.7
RUNNING GEAR
Truck frame Stamped,rivetedstructure
Towing devices Inthe front:rigidtowing hooks,inthe rear:
double-
actiontowing unit;onbolstertrucks:
rigidtowing hooks andfifthwheelin the rear
Truck suspension:
front
Conventional,ontwolongitudinalsemielliptic
springsoperating togetherwithfourtwo-way
hydraulicshock absorbers
rear Conventional,walking-beamtype,withtorque
rods,on longitudinalsemiellipticsprings*4
**1 Ural-4320-10,Ural-4320-31trucks,Ural-44202-0612-30,Ural-
4420-10,Ural-4420-31,Ural-44202-0612-30 bolstertrucks areprovidedwith
areserve60 lfueltank(filling capacity57.6 l)
*2Ural-4320-10,Ural-4320-0611-10 trucks arecompletedwitha210 l
main fueltank(filling capacity204 l).
*3The truck canbealternativelyequippedwiththe YAMZ-182 orYAMZ-
183 hydraulicallydrivendiaphragmclutchof pulling-outtypefeaturing anair-
hydraulicbooster.
4 The Ural-4320-0911-30 truck,Ural-44202-0612-30 bolstertrucks are
completedwithareinforcedspring of athickersection

18
Parameter Ural-4320-
10
Ural-4320-
0611-10
Ural-4420-
10
Ural-4320-31
Ural-4320-
0611-31
Ural-4420-31
Ural-43202-
0351-31
Ural-44202-
0311-31
Ural-4320-
0911-30
Ural-
44202-
0612-30
Wheels Dividedtypedisc wheelswithsemideep-well rimandtoroidalbead
seats,centeredwithchamfersof fastening holes
515-254(254 -508) 514-400 (400 -508)
Tires
*1
Inaccordancewithtruck’sdeliv-
eryscope:
a) 14.00-20 146G(HC14/PR14),
ОИ-25model,pneumatic,tube-
type,standard shaped,ribbed
tireswithcontrolledpressure,
max.permissiblecarrying capacity
30.40 kN(3100 kgf)
1200x500-508,500/70-508
(1200x500-508),500/70-20
(1200x500-508),ИД-П284
model,pneumatic,tube-type,
wide-section shapedribbed
tireswithcontrolledpressure
b)390/95R20 147J(HC10/PR10)
KAMA-
URAL,pneumatic,radial,
tube-type,standard shaped
ribbedtireswithcontrolledpres-
sure,max.permissiblecarrying
capacity30.40 kN(3100kgf)
c) 390R20 149J(HC14/PR14), О-
65model,pneumatic,radial,
tube-type,standard shaped
ribbedtireswithcontrolledpres-
sure,max.permissiblecarrying
capacity32.36 kN(3300 kgf)
149F
(HC10/PR10)
150F
(HC10/PR10)
max.permissible
carrying ca-
pacity32.36 kN
(3300 kgf)
156F
(HC16/PR16)
max.per-
missiblecar-
rying ca-
pacity39.23
kN(4000 kgf)
Ratedtire
pressure,
MPa
(kgf/cm2): a)0.31(3.2)
b)0.28 (2.9)
c)0.34 (3.5)
front
axle
a)0.34 (3.5)
b)0.26 (2.7)
c)0.32 (3.2) 0.34 (3.5)
0.34 (3.5)
rear
bogie a)
0.42 (4.3)
b) 0.31(3.2)
c) 0.38 (3.9)
0.52(5.3)
*1 Atcustomer’srequestthe truck iscompletedwith 12.00R20 У-4 ИД-304
tires,pneumatic,radial,tube-type,standard shaped,withmulti-purposetread
pattern, withconstantpressure:
-150/146J(HC16/PR16),max.permissiblecarrying capacity32.85 kN(3350kgf)
withcorresponding tirepressureof 750 kPa(7.7 kgf/cm2);
-154/149J(HC18/PR18),max.permissiblecarrying capacity36.78 kN(3750kgf)
withcorresponding tirepressureof 850 kPa(8.7 kgf/cm2).
The tiresaremountedon8.5-20 wheelsincaseof singletiretruck configu-
ration having 120 mm overhang.

19
Parameters Ural-4320-10
Ural-4420-10
Ural-4320-0611-
10
Ural-4320-31
Ural-43202-0351-31
Ural-4420-31
Ural-44202-0311-31
Ural-44202-0612-30
Ural-4320-0611-31
Ural-4320-0911-30
1 2 3
STEERING
Drivetype Mechanical,withhydraulicbooster
Steering gear Double-threadworm andsidenotchedsegment
ratio 21.5
The truck canbealternativelyequippedwith
steering type"screw- ball nut- rack-segment"
ratio 23.55
Booster Hydraulic,double-actiontype,withslide-type
controlvalvemountedon steering gearcase
Hydraulicboosterpump Blade,double-action,rotortype,drivenbyengine
crankshaft
Frontsteerablewheels
position Wheelcamber– 1°,sideinclination of knuckle
pin – 6°,toe-in - 1...3mm
BRAKING SYSTEM
Servicebrakesystem Dual-circuittypefeaturing combination(air-over
hydraulic)actuationmethodof truck brakes*1.
Wheelbrakesof drumtype
Stand-bybrakesystem Oneof servicebrakesystemcircuits
Parking brakesystem Mechanical,interlockedwithtrailerparking brake
controlvalve.Drum-typebraking mechanism,
mountedon transferboxoutputshaft
Auxiliarybrakesystem Compressiontype,installedingasexhaustsystem.
Airoperated,interlockedwithenginestop.
*1 Atcustomer’srequestthe truck can becompletedwithanti-lock-braking
system(the ABS).