Takeuchi TL150, Workshop Manual

Page: 298 / 312

V-16
TROUBLESHOOTING
MACHINE TRAVEL
1. Inspect the hydraulic pump P4.
Inspect the hydraulic pump P4 which is the
source of the hydraulic pressure for switching to
second gear.
“V-5”
Since clogging of the line filter can also be con-
sidered, inspect and clean the filter.
2. Inspect the pilot relief valve.
Measure the relief pressure of the pilot relief
valve.
• If the pressure is the standard value, the valve
is normal.
“II. Specifications, Standards for Judging
Performance”
MACHINE WILL NOT TRAVEL IN SECOND SPEED.
The 2nd speed control
valve is faulty.
5
Inspect the 2nd speed
solenoid valve.
4
Inspect the travel speed
switch.
3
Inspect the pilot relief
valve.
2
Inspect the hydraulic
pump P4.
1
Repair or replace the hy-
draulic pump P4.
Adjust, repair or replace the
pilot relief valve.
Replace the travel speed
switch.
Repair or replace the 2nd
speed solenoid valve.
Repair or replace the 2nd
speed control valve.
Normal
Normal
Normal
Faulty
Faulty
Faulty
Faulty
Faulty
Normal