Case 590ST - Transmission Troubleshooting

8-TROUBLESHOOTING
Transmission
PROBLEMPOSSIBLECAUSECORRECTION
Controlvalvesupplyproblem.Checkand,ifnecessary,replacethe
controlvalves.
Damagedconnectionsof
transmissionandvehiclewiring
harness.
Repairand,ifnecessary,replacethe
wiringharness.
Oxidationinthecontactsofthe
electriccablesofthewiringharness.
Cleanthecontacts.
Interruptionoftheelectriccable.
Replacetheelectriccable.
Damagetothesolenoids/solenoid
valves.
Replacethesolenoids.
Damagetosensors.Replacesensors.
Shortcircuitsorbadcontact.Checkand,ifnecessary,replacethe
fuses.
EGM/ECUgearshiftelectronic
controloperationfault(onlyfor
POWERSHIFTmodels).
ReplacetheEGM/ECUgearshift
electroniccontrol(onlyfor
POWERSHIFTmodels).
Incorrectoillevel.Restoretheoillevel.
Checkforpossibleoilleaks.
Eliminatetheleaksandrestorethe
oillevel.
Suctionstrainerrestriction.Cleanthesuctionstrainer.
Damagedoilpump.Replacetheoilpump.
Damagedoilpumppressurerelief
valve.
Replacetheoilpump.
Damaged/restrictedlter.Replacethelter.
Damaged/stuckcontrolvalve.
Replacethecontrolvalve.
Damagedconverter.Replacetheconverter.
Oiltemperaturebelow0°C(32°F).Waitfortheoperatingtemperatureto
bereached(stalltest).
Damagedrotatingseals.Replacetherotatingseals.
Damagedsynchronizers(onlyfor
POWERSHUTTLEmodels).
Replacethesynchronizers(onlyfor
POWERSHUTTLEmodels).
Stuckshuttlelever.
Repairtheshuttlelever.
Excessivelyworn-outclutch
assembly.
Repairand,ifnecessary,replacethe
clutchassembly.
Thevehicledoesnotmove.
Lackofmotiontransmission(broken
gears,shafts,bearings,etc.).
Check,repairand,ifnecessary,
replace.
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