11-6
TROUBLESHOOTING
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
Pumps 1, 2 control pressure sensors
Poor contact in connectors * 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 authorized dealer.
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