TROUBLESHOOTING
11-7
Swing Function
Problem
Cause
Solution
Upperstructure does not swing
Faulty swing parking brake
* Repair or replace
Faulty swing parking brake release valve
* Repair or replace
Broken swing motor
* Repair or replace
Faulty pilot valve
* Replace
Faulty pilot circuit line
* Repair or replace
Swing is not smooth
Worn swing gear
* Repair or replace
Damaged swing bearing and bearing balls
* Repair or replace
Lack of grease
Refill
Inversion protective valve
* Repair or replace
Items with * mark: Consult your nearest Hitachi dealer.
Immediately after the control valve, swing motor relief valve and/or the swing motor is replaced, a noise may be
emitted and/or operation may not be performed smoothly due to air trapped in the hydraulic line.
Slowly continue to operate the machine for approx. 10 minutes to bleed air.
After repair work is complete, be sure to check the oil level in the hydraulic oil tank. Refill hydraulic oil as needed.
Содержание 090001
Страница 4: ......
Страница 9: ...CONTENTS Bucket Teeth Transverse Type Pin Used Type 13 18 INDEX 14 1 ...
Страница 10: ...CONTENTS MEMO ...
Страница 14: ...MACHINE NUMBERS 4 MEMO ...
Страница 64: ...MEMO SAFETY SIGNS S 50 ...
Страница 198: ...OPERATOR S STATION 1 134 MEMO ...
Страница 200: ...BREAK IN 2 2 MEMO ...
Страница 212: ...OPERATING THE ENGINE 3 12 MEMO ...
Страница 266: ...OPERATING THE MACHINE 5 46 MEMO ...
Страница 392: ...MAINTENANCE 7 118 13 Cab mounting nut 14 Cover mounting bolt M1U1 07 026 MDCN 07 073 Anchor Bolts MDCN 07 022 ...
Страница 398: ...MAINTENANCE 7 124 MEMO ...
Страница 399: ...8 1 HYDRAULIC CIRCUIT AND ELECTRICAL CIRCUIT Hydraulic Circuit MDAA 08 001 ...
Страница 402: ...MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS 9 2 MEMO ...
Страница 404: ...STORAGE 10 2 MEMO ...