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No Differential Lock Operation
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Problem in electrical circuit to solenoid
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With engine stopped and key switch turn to accessory, activate differential lock and listen for a click from solenoid valve.
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Do Differential Lock Operational Checks.
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Stuck differential lock solenoid valve
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With engine stopped and key switch turn to accessory, activate differential lock and listen for a click from solenoid valve. See your authorized dealer.
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Excessive leakage in differential lock piston seals
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See your authorized dealer.
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Stuck differential lock piston
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See your authorized dealer.
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Excessive wear on differential lock engaging gears
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See your authorized dealer.
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Differential Lock Slips Or Chatters When Engaged
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Excessive leakage differential lock piston seals
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See your authorized dealer.
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Failed seals on differential lock solenoid valve
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See your authorized dealer.
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Stuck differential lock piston
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See your authorized dealer.
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Excessive wear of differential lock engaging gears
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See your authorized dealer.
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| Symptom |
Problem |
Solution |
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Differential Lock Will Not Release
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Stuck foot switch
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Inspect.
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Problem in electrical circuit
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With engine stopped and key switch on, activate differential lock and listen for a click from solenoid valve. See your authorized dealer.
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Stuck differential lock solenoid valve
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With engine stopped and key switch on, activate differential lock and listen for a click from solenoid valve. See your authorized dealer.
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Stuck differential lock piston
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See your authorized dealer.
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Stuck differential lock engaging gears
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See your authorized dealer.
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Rear Axle Overfilled With Oil
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Differential lock piston seals leaking
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See your authorized dealer.
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Service brake piston seals leaking
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See your authorized dealer.
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Park brake piston seals leaking
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See your authorized dealer.
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Poor Service Brakes
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Air in brake valve or lines or piston
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Bleed brakes. See Bleeding Brakes in Maintenance chapter.
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Brake valve leaks
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See your authorized dealer.
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Brake piston seals leak
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See your authorized dealer.
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Brake disks worn excessively
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See your authorized dealer.
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Restriction in brake circuit
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See your authorized dealer.
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Low oil level
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Check oil level and fill.
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| Symptom |
Problem |
Solution |
|
Service Brakes Will Not Release
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Brake pedal not returning to full up position
|
See your authorized dealer.
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Warped brake disks
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See your authorized dealer.
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Stuck brake piston
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See your authorized dealer.
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No free travel on brake adjusters
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See your authorized dealer.
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Brake valve worn
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See your authorized dealer.
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Wrong oil in rear axle
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Drain and refill with correct oil.
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Disks worn excessively
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See your authorized dealer.
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Brake valve leakage
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See your authorized dealer.
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Park Brake Will Not Hold
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Worn parts
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See your authorized dealer.
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Mechanically disengaged (tow release)
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Check and adjust cap screws. See Check Park Brake in Maintenance As Required chapter.
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Park Brake Will Not Release
|
Low hydraulic pressure oil to park brake
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See your authorized dealer.
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Park brake solenoid not working
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See your authorized dealer.
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Piston stuck
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See your authorized dealer.
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