Manitowoc Grove TMS800E User Manual

8-62
Published 01-29-2014, Control # 496-00
UNDERCARRIAGE TMS800E SERVICE MANUAL
Maintenance
Troubleshooting
Symptom Probable Cause Solution
1. Slow or erratic operation of
outrigger extension cylinders.
a. Low hydraulic oil level. a. Check for leaks. Make any
needed repairs. Fill reservoir
to proper level.
b. Damaged relief valve. b. Remove relief valve; clean or
replace.
c. Sticking solenoid valve spool. c. Repair or replace valve spool.
d. Improper ground to base of
solenoid.
d. Ground properly.
e. Damaged O-rings and swivel. e. Remove swivel and replace
O-rings.
f. Directional selector switch
sticking.
f. Clean or replace switch.
g. Collector ring dirty or glazed. g. Clean and deglaze collector
ring.
h. Damaged wiring to solenoid. h. Replace wiring.
i. Weak brush springs on
collector ring.
i. Replace brush springs.
j. Damaged extension cylinder
(internal parts).
j. Remove extension cylinder
and repair as necessary.
k. Bent cylinder rods. k. Replace piston rods and
seals.
l. Excessive material on
outrigger beams.
l. Clean outrigger beams.
m. Binding outrigger beam. m. Repair or replace outrigger
beam.
n. Damaged outrigger valve. n. Repair or replace valve.
o. Damaged valve coil. o. Replace coil.
p. Main hydraulic pump
cavitation.
p. Replace or tighten hose or
fitting.
q. Partially shifted hydraulic
spool in selector valve or
manifolds.
q. Disassemble, clean, and
polish spool and valve
housing with very fine emery
cloth (water paper).
r. Insufficient voltage for
operation of solenoid valve.
r. Solenoids require a minimum
of 9.5 volts to energize. Check
outrigger wiring and electrical
coupling collector rings.
s. Damaged piston seals. s. Replace all cylinder seals.
t. Worn or damaged hydraulic
pump section.
t. Rep
air o
r replace pump
section.
u. Scored cylinder barrel. u. Repair or replace extension
cylinder.
Reference Only

Manitowoc Grove TMS800E Specifications

General

Brand	Manitowoc
Model	Grove TMS800E
Category	Construction Equipment
Language	English