Manitowoc Grove TMS700E User Manual

Grove Published 01-29-2015, Control # 512-01 8-63
TMS700E SERVICE MANUAL UNDERCARRIAGE
8
Maintenance
Troubleshooting
Symptom Probable Cause Solution
1. Slow or erratic operation of
outrigger extension
cylinders.
a. Damaged relief valve. a. Remove relief valve; clean or
replace.
b. Low hydraulic oil. b. Check for leaks. Repair any found.
Add hydraulic oil to proper level.
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. Repair or replace pump section.
u. Scored cylind
er
barrel. u. Repair or replace extension
cylinder.
v. Cracked or damaged piston. v. Replace rod weld and all cylinder
seals.
w. Piston loose on piston rod w. Replace all cylinder seals and
torque piston lockout.
Reference Only

Manitowoc Grove TMS700E Specifications

General

Brand	Manitowoc
Model	Grove TMS700E
Category	Construction Equipment
Language	English