Hitachi ZW140-6 Operator's Manual page 393

Service Brake
Symptom
Service brake does not work properly
Brake is dragged
Lack of brake fluid (hydraulic oil)
Transmission
Symptom
Transmission is noisy.
Oil overheats
Propeller Shaft
Symptom
Propeller shaft vibrates
Propeller shaft is noisy
Front Axle, Rear Axle
Symptom
Front and/or rear axle is noisy
Front and/or rear axle does not
transmit power.
Others
If there is a problem with the machine, a noise, excessive vibration, and abnormal smells may occurs.
Always be aware of the machine conditions during operation.
TROUBLESHOOTING
Cause
Malfunction of brake valve
Oil leak from brake line, Air mixing
Malfunction of brake valve
Faulty brake pedal
Oil leak from brake line and/or hose connector * Retighten or repair
Oil leak due to brake piston seal (inside axle)
Cause
Lack or deterioration of gear oil
Worn inner parts in transmission
Broken gear or bearing
Abnormal fan rotation
Cause
Bent propeller shaft
Loosened parts, Loss of balance
Excessively worn spline
Worn or seized spider bearing
Loosened parts
Insufficient greasing
Cause
Worn or broken gears
Lack or deterioration of gear oil
Worn bearings, Excess play
Excess play on shaft spline
Broken axle
Broken gears
11-5
Solution
* Repair, Replace
* Repair, Bleed air
* Repair, Replace
* Repair, Replace
*Repair, Replace
* Consult your authorized dealer.
Solution
Refill, change
* Repair, Replace
* Repair, Replace
* Repair, Adjust
* Consult your authorized dealer.
Solution
* Repair, Replace
* Retighten, Adjust
* Replace
* Replace
Retighten
Grease
* Consult your authorized dealer.
Solution
* Replace
Refill, Replace
* Replace
* Repair, Replace
* Replace
* Replace
* Consult your authorized dealer.