Hitachi ZW 310-6 Operator's Manual page 416

6. Drive Function
Problem
Steering wheel is heavy to
operate.
Steering wheel turns in
unexpected direction.
Accelerator pedal is heavy to
operate.
Accelerator pedal play is
excessive.
Parking brake
Does not work properly
Service brake does not work
properly
Service brake is dragging.
Service brake fluid loss
(hydraulic oil).
Transmission is noisy.
Oil temperature increases.
Propeller shaft vibrates.
Propeller shaft is noisy
Front and/or rear axle is noisy Worn or broken gears
Front and/or rear axle does
not transmit power.
f
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.
TROUBLESHOOTING
Cause
Faulty steering pump
Faulty steering device
Malfunction of steering cylinder
Relief valve set pressure reduction
Faulty steering column
Low tire air pressure
One side brake is applied or dragged.
Rusted joint
Worn joint
Worn brake disk and/or pads
Faulty parking brake solenoid valve
Malfunction of brake valve
Oil leak from brake line, Air mixing
Malfunction of brake valve
Faulty brake pedal
Corrosion of brake pedal parts
Pebbles in area of brake pedals
Oil leak from brake line and/or hose
connector
Oil leak due to brake piston seal (inside axle)
Lack or deterioration of gear oil
Worn inner parts in transmission
Broken gear or bearing
Faulty fan rotation
Bent propeller shaft
Loosened parts, Loss of balance
Excessively worn spline
Worn or seized spider bearing
Loosened parts
Insufficient greasing
Lack or deterioration of gear oil
Worn bearings, Excess play
Excess play on shaft spline
Broken axle
Broken gears
11-4
Solution
* Repair, Replace
* Repair, Replace
* Repair, Replace
* Adjust
* Inflate
* Adjust
* Lubricate, Repair
* Replace, Repair
* Replace
* Repair or replace
* Repair or replace
* Repair. Bleed air
* Repair or replace
* Repair or replace
Clean and lubricate
Remove - clean area
* Retighten or repair
* Repair
Refill, replace
* Repair, Replace
* Repair, Replace
* Repair or adjust
* Repair, Replace
* Retighten, Adjust
* Replace
* Replace
* Retighten
Grease
* Replace
Refill, Replace
* Replace
* Repair, Replace
* Repair
* Repair