Takeuchi TB 250, Workshop Manual

Page: 303 / 352

5-12
5
TRAVELING
TROUBLESHOOTING
2nd speed travel is not possible
1 Check the gear pump
Faulty
Repair or replace the gear
pump
Normal
2
Check the pilot relief
valve
Faulty
Adjust, repair or replace the
pilot relief valve
Normal
3 Check the fuse
Faulty
Replace the fuse
Normal
4
Check the 2nd speed
switch
Faulty
Replace the 2nd speed
switch
Normal
5
Check the 2nd speed re-
lay
Faulty
Replace the 2nd speed relay
Normal
6
Check the 2nd speed so-
lenoid valve
Faulty
Repair or replace the 2nd
speed solenoid valve
Normal
7 Check the swivel joint
Faulty
Repair or replace the swivel
joint
Normal
8
Check the 2nd speed
control valve
Faulty
Repair or replace the 2nd
speed control valve
1. Check the gear pump
Check the gear pump that supplies hydraulic pressure
for the 2nd speed switching.
“5-3”
Also, check the line filter for clogging, and clean it as
necessary.