Takeuchi TL150 Workshop Manual

IV-91
HYDRAULIC UNITS
SELF-LEVEL VALVE
TROUBLESHOOTING
Symptom Probable Causes Remedy
Arm delay at start of self-level
or unstable self-level.
• Air in system. • Cycle Arm and bucket slowly to rid
system of air.
Loaded bucket dumps or un-
curls when control valve is in
neutral.
• Unloading spool is leaking. • Remove and inspect unloading
spool for damage.
Insufficient self-level. • Pin is out of adjustment.
• Broken unloading spool spring.
• Flow divider spool stuck towards
adjustment pin side.
• Re-adjust pin to achieve proper
flow split.
• Replace unloading spool spring.
• Remove flow divider spool and
check for damage.
Bucket dumps faster than Arm
raises. Too much self-level.
• Pin is out of adjustment.
• Flow divider spool is stuck towards
port B.
• Flow divider spool installed
wrong.
• Re-adjust pin to achieve proper
flow split.
• Remove flow divider spool and
inspect for damage.
• Remove spool and install with in
-
ternal orifice towards port B.
With bucket dumped, Arm is
slow in starting to raise.
• Dampening orifice in the unloading
spool is plugged.
• Remove unloading spool and clean
dampening orifice.
Bucket does not move in self-
level.
• Pin is screwed in all the way.
• Dampening orifice in the unloading
spool is plugged.
• Ports A and B plumbed backwards.
• Re-adjust pin to achieve proper
flow split.
• Remove unloading spool and clean
dampening orifice.
• Reverse hoses to ports A and B.
Bucket Curls in self-level. • Ports C and D plumbed back-
wards.
• Reverse hoses to ports C and D.
External leakage • Damaged O-ring. • Replace O-ring.

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)