TM 5-3810-307-24-1-1
Direct/General Support Troubleshooting - Continued
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
1. Outrigger extension
i.
Damaged outrigger valve.
i.
Repair or replace valve.
cylinder operation slow or
erratic (continued).
j.
Damaged valve coil.
j.
Replace coil.
k. Partially shifted hydraulic
k. Disassemble, clean, and polish
selector spool.
spool and valve with very fine
emery cloth (water paper).
l.
Insufficient voltage for
l.
Solenoids require a minimum of
operation of solenoid valve.
19 vdc to energize. Check
outrigger wiring and electrical
swivel coupling collector rings.
m. Worn or damaged hydraulic
m. Repair or replace pump section.
pump section.
n. Damaged piston seals.
n. Replace all cylinder seals.
o. Scored cylinder barrel.
o. Repair or replace extension.
p. Cracked or damaged piston.
p. Replace piston and all cylinder
seals.
q. Replace all cylinder seals and
q. Piston loose on piston rod.
torque piston lockout.
2. Outrigger vertical jack
a. Damaged main relief valve.
a. Repair or replace valve.
cylinder operation slow or
erratic.
b. Damaged holding valve
b. Replace holding valve seals.
seals.
c. Bent cylinder rod.
c. Replace cylinder rod and all
seals.
d. Bent outrigger housing.
d. Repair or replace housing.
e. Damaged o-rings in swivel.
e. Replace o-rings.
f. Sticking solenoid valve
f. Repair or replace spool valve.
spool.
g. Weak brush springs on
g. Replace brush springs.
collector switch.
h. Collector ring dirty or glazed.
h. Clean or deglaze collector ring.
i.
Worn or damaged hydraulic
i.
Repair or replace pump section.
pump section.
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