8-26 Published 11-22-2016, Control # 345-12
UNDERCARRIAGE RT9130E-2 SERVICE MANUAL
4. Solenoid failure. a. No current. a. Check power source of at
least 85% of coil rating.
b. Damaged solenoid assembly. b. Replace solenoid.
c. Short in solenoid. c. Replace coil.
d. Loss of solenoid force. d. Decrease time of solenoid
energization, decrease cycle
rate.
5. Outrigger jack cylinder slow or
erratic.
a. Low in hydraulic oil. a. Check system for leaks. Make
repairs as needed. Fill
reservoir.
b. Damaged main relief valve. b. Repair or replace valve.
c. Damaged holding valve seals. c. Replace holding valve seals.
d. Bent cylinder rod. d. Replace cylinder rod and
seals.
e. Bent outrigger housing. e. Repair or replace outrigger
housing.
f. Excessive material on beams. f. Clean outrigger beams.
g. Sticking solenoid valve spool. g. Repair or replace valve spool.
h. Damaged wiring to solenoid. h. Repair or replace wiring.
i. Weak brush springs on
collector rings.
i. Replace brush springs.
j. Collector ring dirty or glazed. j. Clean or deglaze collector
ring.
k. Directional selector switch
sticking.
k. Clean or replace switch.
a. Main hydraulic pump
cavitation.
l. Replace or tighten hose and
fittings.
b. Worn or damaged hydraulic
pump section.
m. Repair or replace pump
section.
6. Outrigger jack cylinder retracts
under load.
a. Damaged piston seals. a. Replace all cylinder seals.
b. Damaged holding valve seals. b. Replace seals.
c. Damaged holding valve. c. Replace valve assembly.
d. Sc
ored cylinder barrel. d. Repair or replace cylinder.
e. Cracked or damaged piston. e. Replace piston and all
cylinder seals.
7. Outrigger jack cylinder extends
while machine is traveling.
a. Damaged piston seals. a. Replace all cylinder seals.
b. Scored cylinder barrel. b. Replace jack cylinder.
c. Cracked or damaged piston. c. Replace piston and seals.
d. Piston loose on cylinder rod. d. Replace seal and retorque.
Symptom Probable Cause Solution
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