8-86
Published 01-14-2021 Control # 707-01
CARRIER
TMS9000-2 SERVICE MANUAL
Flow in excess of valve rating.
Limit flow through valve to that
recommended. Check pump output and
cylinder ration.
Pressure in excess of valve rating.
Check relief valve setting or pump
compensation and adjust or replace as
necessary.
Electrical failure.
Check wiring and solenoids.
External leakage.
Damaged O-rings or quad rings.
Check for chipped packings and replace.
Loose tie bolts.
Retorque tie bolts.
Damaged solenoid.
Replace damaged parts.
Solenoid failure.
No current.
Check power source of at least 85% of coil
rating.
Damaged solenoid assembly.
Replace solenoid.
Short in solenoid.
Replace coil.
Loss of solenoid force.
Decrease time of solenoid energization.
Outrigger vertical jack cylinder slow
or erratic.
Low in hydraulic oil.
Replenish oil to proper level.
Damaged main relief valve.
Repair or replace valve.
Damaged holding valve seals.
Replace holding valve seals.
Bent cylinder rod.
Replace cylinder rod and seals.
Bent outrigger housing.
Repair or replace outrigger housing.
Damaged O-rings in swivel.
Replace O-rings.
Excessive material on beams.
Clean outrigger beams.
Sticking solenoid valve spool.
Repair or replace valve spool.
Damaged wiring to solenoid.
Repair or replace wiring.
Weak brush springs.
Replace brush springs.
Collector ring dirty or glazed.
Clean or deglaze collector ring.
Directional selector switch sticking.
Clean or replace switch.
Main hydraulic pump cavitation.
Replace or tighten hose and fittings.
Worn or damaged hydraulic pump
section.
Repair or replace pump section.
Jack cylinder retracts under load.
Damaged piston seals.
Replace all cylinder seals.
Damaged holding valve seals.
Replace seals.
Damaged holding valve.
Replace valve assembly.
Scored cylinder barrel.
Repair or replace cylinder.
SYMPTOM
PROBABLE CAUSE
SOLUTION
Fo
r
Reference
Only