TM 5-3810-307-24-1-1
Direct/General Support Troubleshooting - Continued
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
3. Sticking valve spool
c. Flow in excess of valve
c. Limit flow through valve to rated
(continued).
rating.
flow. Check pump output and
cylinder ratio.
d. Pressure in excess of valve
d. Check relief valve setting or
rating.
pump compensation to rated
flow.
e. Electrical failure.
e. Check wiring and solenoids.
4. External leakage.
a. Damaged o-rings or quad
a. Check for damaged seals and
rings.
replace as necessary.
b. Loose tie bolts.
b. Retorque tie bolts.
c. Damaged solenoid.
c. Replace damaged parts.
5. Solenoid failure.
a. No current.
a. Ensure incoming power is at
least 85% of coil rating.
b. Damaged solenoid
b. Replace Solenoid.
assembly.
c. Short in solenoid.
c. Replace coil.
d. Loss of solenoid force.
d. Decrease time of energization
and cycle rate.
6. Poor system performance
a. Damaged hydraulic pump.
a. Repair or replace pump.
or failure.
b. Dirt in system relief valve.
b. Disassemble and clean relief
valve.
c. System relief valve
c. Replace valve.
defective.
d. Worn cylinder(s) or motor(s).
d. Repair or replace damaged
components.
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