1
Check the operation of
actuators other than of
the travel motor
Normal
2
Check the spool opera-
tion
Faulty
block
Normal
Faulty
Adjust, repair or replace
Normal
4 Check the swivel joint
Faulty
Repair or replace the swivel
joint
Normal
5
Check the counter bal-
ance valve
Faulty
Repair or replace the counter
balance valve
Normal
6 Check the travel motor
Faulty
Repair or replace the travel
motor
1. Check the operation of actuators other than of the
travel motor.
-
If operation is faulty, inspect the main relief valve and
piston pump.
2. Check the spool operation
If it can’t be taken out or is scratched, replace the
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