TROUBLESHOOTING
11-4
6. Drive Function
Problem
Cause
Solution
Steering wheel is heavy to
operate.
Faulty steering pump
* Repair, Replace
Faulty steering device
* Repair, Replace
Malfunction of steering cylinder
* Repair, Replace
Relief valve set pressure reduction
* Adjust
Faulty steering column
Low tire air pressure
* Inflate
Steering wheel turns in
unexpected direction.
One side brake is applied or dragged.
* Adjust
Accelerator pedal is heavy to
operate.
Rusted joint
* Lubricate, Repair
Accelerator pedal play is
excessive.
Worn joint
* Replace, Repair
Parking brake does not work
properly
Worn brake disk and/or pads
* Replace
Faulty parking brake solenoid valve
* Repair or replace
Service brake does not work
properly
Malfunction of brake valve
* Repair or replace
Oil leak from brake line, Air mixing
* Repair. Bleed air
Service brake is dragging.
Malfunction of brake valve
* Repair or replace
Faulty brake pedal
* Repair or replace
Corrosion of brake pedal parts
Clean and lubricate
Pebbles in area of brake pedals
Remove - clean area
Service brake fluid loss
(hydraulic oil).
Oil leak from brake line and/or hose
connector
* Retighten or repair
Oil leak due to brake piston seal (inside axle)
* Repair
Transmission is noisy.
Lack or deterioration of gear oil
Refill, replace
Worn inner parts in transmission
* Repair, Replace
Broken gear or bearing
* Repair, Replace
Oil temperature increases.
Faulty fan rotation
* Repair or adjust
Propeller shaft vibrates.
Bent propeller shaft
* Repair, Replace
Loosened parts, Loss of balance
* Retighten, Adjust
Propeller shaft is noisy
Excessively worn spline
* Replace
Worn or seized spider bearing
* Replace
Loosened parts
* Retighten
Insufficient greasing
Grease
Front and/or rear axle is noisy
Worn or broken gears
* Replace
Lack or deterioration of gear oil
Refill, Replace
Worn bearings, Excess play
* Replace
Excess play on shaft spline
* Repair, Replace
Front and/or rear axle does
not transmit power.
Broken axle
* Repair
Broken gears
* Repair
NOTE: * Consult the nearest authorized dealer.
7. Others
The machine may have a noise, excessive vibration, and
abnormal smell when any trouble occurs. Always beware of
the machine conditions during operation.
Summary of Contents for 70Z7
Page 2: ...93108 00691 April 2015...
Page 5: ......
Page 11: ...MACHINE NUMBERS 2 MEMO...
Page 51: ...SAFETY LABELS S 40 6 10 4 1 3 9 6 5 SS 3461...
Page 171: ...OPERATOR S STATION 1 110 MEMO...
Page 173: ...BREAK IN 2 2 MEMO...
Page 187: ...OPERATING THE ENGINE 3 14 MEMO...
Page 231: ...OPERATING THE MACHINE 5 24 MEMO...
Page 359: ...MAINTENANCE 7 118 MEMO...
Page 363: ...MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS 9 4 MEMO...
Page 367: ...STORAGE 10 4 MEMO...