New Holland B95C - Transmission - Troubleshooting

8-TROUBLESHOOTING
Transmission-Troubleshooting
Problem
PossibleCauseCorrection
Thevehicledoesnot
move.
Controlvalvesupplyproblem.Checkand,ifnecessary,replacethecon-
trolvalves.
Damagedconnectionsoftransmissionand
vehiclewiringharness.
Repairand,ifnecessary,replacethewiring
harness.
Oxidationinthecontactsoftheelectricca-
blesofthewiringharness.
Cleanthecontacts.
Interruptionoftheelectriccable.
Replacetheelectriccable.
Damagetothesolenoids/solenoidvalves.
Replacethesolenoids.
Damagetosensors.Replacesensors.
Shortcircuitsorbadcontact.Checkand,ifnecessary,replacethefuses.
EGM/ECUgearshiftelectroniccontrolop-
erationfault(onlyforpowershiftmodels).
ReplacetheEGM/ECUgearshiftelectronic
control(onlyforpowershiftmodels).
Incorrectoillevel.Restoretheoillevel.
Checkforpossibleoilleaks.
Eliminatetheleaksandrestoretheoillevel.
Suctionstrainerrestriction.Cleanthesuctionstrainer.
Damagedoilpump.Replacetheoilpump.
Damagedoilpumppressurereliefvalve.
Replacetheoilpump.
Damaged/restrictedlter.Replacethelter.
Damaged/stuckcontrolvalve.
Replacethecontrolvalve.
Damagedconverter.Replacetheconverter.
Oiltemperaturebelow0°C(32°F).Waitfortheoperatingtemperaturetobe
reached(stalltest).
Damagedrotatingseals.Replacetherotatingseals.
Damagedsynchronizers(onlyforpower
shuttlemodels).
Replacethesynchronizers(onlyforpower
shuttlemodels).
Stuckshuttlelever.
Repairtheshuttlelever.
Excessivelyworn-outclutchassembly.
Repairand,ifnecessary,replacetheclutch
assembly.
Lackofmotiontransmission(brokengears,
shafts,bearings,etc.).
Check,repairand,ifnecessary,replace.
Thebrakedoesnotrelease.
.
•
Checkthegeneralpressureof
transmission.
•
Checkvoltage.
•
Checktheoperationofthesolenoid
valve.
•
Checkthemountingofthebrake
solenoidvalveblockafteroperatingon
thebrake.
•
Aftertheabove-describedverications,
disassemblethebrakecoverand
checktheconditionofthepartsfor
unlocking/lockingthebrake(T eon
seals,Bellevillewashers,brakedisc
deformation,etc.).
Thevehiclehasareduced
powertransmission.
Incorrectoiltemperature.
Waitfortheoperatingtemperaturetobe
reached(stalltest).
Transmissionoiloverheating.
Restoreacceptabletemperaturevalues.
Incorrectoperatingpressures.
Checkthehydrauliccircuitandreplace(oil
pump,lters,controlvalve).
Damagedconverter.
Replacetheconverter.
Incorrectoillevel.Restoretheoillevel.
Worn-outclutchassembly.
Replace/repair.
4WDfailstoengage.Repair/replacethe4WDshaftassembly.
Overheatedsolenoids/solenoidvalves.
Replace.
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