Takeuchi TL150, Workshop Manual

Page: 302 / 312

V-20
TROUBLESHOOTING
LIFT ARMS
MOVEMENT OF THE LIFT ARM CYLINDERS IS SLOW OR LACKS POWER.
Inspect the spool opera-
tion.
3
Inspect the pilot valve. 2
Are the lift arm cylinders
moving within the speci-
fied range of speed?
1
Inspect for leaks within
the lift arm cylinders.
6
Inspect the arm float
solenoid valve.
5
Repair or replace control
valve.
Normal
Normal
Faulty
Perform replacement
test for the port relief
valves. 4
Repair or replace arm float
solenoid valve.
Repair or replace lift arm
cylinder.
Normal
Faulty
Repair or replace port relief
valve.
No change
Operation be-
came normal.
Port relief valve is at
fault.
Repair or replace pilot
valve.
Outside the standard
Faulty
1. Are the lift arm cylinders moving within the
specified range of speed?
“II. Specifications, Standards for Judging
Performance”
2. Inspect the pilot valve.
“V-18”
3. Inspect the spool operation.
“V-19”
4. Perform replacement test for the port relief
valves.
“V-19”
5. Inspect the arm float solenoid valve.
“V-19”
Normal
Within standard
Faulty