Manitowoc Grove TMS800E Service And Maintenance Manual page 346

UNDERCARRIAGE
Symptom
Outrigger vertical jack cylinder
slow or erratic. (continued)
6. Outrigger stabilizer
retracts under load.
7. Jack cylinder extends
machine is traveling.
8. Outrigger system will not activate
(from stowed or extended and
down position).
9. Outrigger system activates, but
selected outrigger will not stow or
extend and lower as desired.
10. Outriggers will not set.
11. Two outriggers activate
single control switch.
12. One/two outriggers will not stow.
13. Individual outrigger will not set or
stow.
8-64
Probable Cause
m. Main
cavitation.
n. Worn or damaged hydraulic
pump section.
cylinder a. Damaged piston seals.
b. Damaged holding valve seals.
c. Damaged holding valve.
d. Scored cylinder barrel.
e. Cracked or damaged piston.
while a. Damaged piston seals.
b. Scored cylinder barrel.
c. Cracked or damaged piston.
d. Piston loose on cylinder rod.
a. Hydraulic oil low.
b. Loose or broken wire on
switch.
c. Clogged, broken, or loose
lines or fittings.
d. Damaged
damaged control valve.
a. Clogged, broken, or loose
hydraulic lines or fittings.
b. Loose or broken wire on
control switch or solenoid
valve.
c. Damaged solenoid valve.
d. Damaged control switch.
e. Damaged hydraulic cylinder.
f. Damaged relief valve.
a. Improper
activation.
from a. Damaged solenoid valves.
a. Hydraulic lock.
a. Damaged piston seals.
b. Damaged check valve.
c. Loosen or broken wire on
control switch or solenoid
valve.
d. Damaged solenoid valve.
Published 01-29-2014, Control # 496-00
TMS800E SERVICE MANUAL
hydraulic pump
relief valve or
sequence of
Solution
m. Replace or tighten hose and
fittings.
n. Repair or replace
section.
a. Replace all cylinder seals.
b. Replace seals.
c. Replace valve assembly.
d. Repair or replace cylinder.
e. Replace piston and
cylinder seals.
a. Replace all cylinder seals.
b. Replace jack cylinder.
c. Replace piston and seals.
d. Replace seal and retorque.
a. Replenish system.
b. Repair or replace wiring.
c. Clean, tighten, or replace
lines or fittings.
d. Repair or replace valve.
a. Clean, tighten, or replace
lines or fittings.
b. Repair or replace wiring.
c. Repair or replace valve.
d. Replace switch.
e. Repair or replace cylinder.
f. Repair or replace relief valve.
a. Activate individual
switch; then activate system
control switch.
a. Repair or replace.
a. Recycle individual
outrigger(s).
a. Replace seals.
b. Repair or replace valve.
c. Repair or replace wiring.
d. Repair or replace valve.
pump
all
control