TROUBLESHOOTING
11-6
Drive Function
Problem
Cause
Solution
One or both side tracks are inoperable Damaged center joint
* Repair or replace
Incompletely released parking brake
* Repair or replace
Broken travel motor
* Repair or replace
Faulty pilot valve
* Replace
Faulty pilot circuit line
* Repair or replace
Does not travel smoothly
Overly tensioned or slackened crawler sag
Adjust
Lack of lubricant in front idler and/or roller
Refill
Deformed track frame
* Repair or replace
Embedded foreign matter such as rock
fragments
Remove
Dragged parking brake
* Repair
Travel speed does not change
Faulty travel mode switch
* Replace
Faulty pressure sensor
* Replace
Pump 1 and 2 delivery pressure sensors
* Replace
Pumps 1, 2 control pressure sensors
* Replace
Poor contact in connector
* Repair or replace
Damaged wire harness
* Repair
Faulty controller (MC)
* Replace
Faulty solenoid valve
* Repair or replace
Faulty motor
* Repair or replace
Items with * mark: Consult your nearest Hitachi dealer.
Summary of Contents for 090001
Page 4: ......
Page 9: ...CONTENTS Bucket Teeth Transverse Type Pin Used Type 13 18 INDEX 14 1 ...
Page 10: ...CONTENTS MEMO ...
Page 14: ...MACHINE NUMBERS 4 MEMO ...
Page 64: ...MEMO SAFETY SIGNS S 50 ...
Page 198: ...OPERATOR S STATION 1 134 MEMO ...
Page 200: ...BREAK IN 2 2 MEMO ...
Page 212: ...OPERATING THE ENGINE 3 12 MEMO ...
Page 266: ...OPERATING THE MACHINE 5 46 MEMO ...
Page 398: ...MAINTENANCE 7 124 MEMO ...
Page 399: ...8 1 HYDRAULIC CIRCUIT AND ELECTRICAL CIRCUIT Hydraulic Circuit MDAA 08 001 ...
Page 402: ...MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS 9 2 MEMO ...
Page 404: ...STORAGE 10 2 MEMO ...