Travel System Does Not Move (Only One Side) - Komatsu PC210-8 Shop Manual

UEN00245-02
H-22 Travel system does not move (only one side)
Trouble

• Travel system does not move (only one side).

Related
• Carry out all troubleshooting in power mode (P) of working mode.
information
Defective seal of travel con-
1
trol valve (suction valve)
Defective seal of travel
2
motor (safety valve)
Possible
Defective seal of travel
3
causes and
motor (check valve)
standard value
in normal state
Malfunction of travel motor
4
(parking brake)
5 Defective travel motor
6 Defective final drive
24
Cause Standard value in normal state/Remarks on troubleshooting
Seal of suction valve of travel control valve may have malfunction.
Check it directly.
Seal of safety valve of travel control valve may have malfunction.
Check it directly.
a
Seal of check valve of travel control valve may have malfunction.
Check it directly.
a
Parking brake of travel motor may have malfunction. Check it
directly.
a
Final drive may have internal defect. Check it directly.
a
Motors of same type on forward and reverse sides or on right
and left sides may be checked by replacing them with each
other and seeing change of condition.
Motors of same type on forward and reverse sides or on right
and left sides may be checked by replacing them with each
other and seeing change of condition.
Prepare with engine stopped, then run engine at high idle and
carry out troubleshooting.
Travel lever
Travel system relief
It may be checked by abnormal sound, abnormal heating,
metal chips in drain oil, etc.
40 Troubleshooting
Leakage from travel motor
27.2 l/min
PC210, 230, 240-8
1