Takeuchi TL150 Workshop Manual

V-19
TROUBLESHOOTING
LIFT ARMS
3. Inspect movement of the spool.
a. Disconnect one of the hoses connected to the
lift arm section of the control valve.
b. Fit a pressure gauge to the lift arm section.
c. Engage the lever to operate the lift arms and
measure the pressure.
• The lift arms are working properly if the pres
-
sure is within the specified values.
4. Perform replacement test for the port relief
valves.
Replace the port relief valve for the bucket with
a working one and see if the lift arm cylinders
then operate properly. If they do, the port relief
valve for the lift arms may be judged to be at
fault.
5. Inspect the arm float solenoid valve.
Foreign particles working their way onto the
surface of the valve sheet or the locking of the
poppet in a fixed position causes the pressure
normally fed to the cylinders to escape to the
tank circuits, thus causing the lift arms to fail to
work entirely.
6. Inspect the lift arm cylinders.
a. Disconnect the hoses connected to the lift
arm section of the control valve.
b. Connect the hoses to the bucket section.
c. Try moving the lift arm cylinders. The cylin
-
ders may be judged to be at fault if they fail to
move here.
Always be sure to lower the lift arms and
bring the bucket down and into contact
with the ground before beginning the above
procedure.
T7E008
B1
A1
T7E009
T7E010

Takeuchi TL150 Specifications

General

Travel Speed - High	11.2 mph (18 km/h)
Max Travel Speed	12.4 km/h
Width	1880 mm
Height	2320 mm
Lift Height	10.5 ft (3.2 m)