Manitowoc Grove TMS800E User Manual

8-63
TMS800E SERVICE MANUAL UNDERCARRIAGE
8
GROVE
Published 01-29-2014, Control # 496-00
Slow or erratic operation of
outrigger extension cylinders.
(continued)
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.
2. Sticking spool. a. Dirt in the system. a. Change oil and flush system.
b. Distortion caused by tie bolts
being over torqued.
b. Retorque tie bolts.
c. Flow in excess of valve rating. c. Limit flow through valve to that
recommended. Check pump
output and cylinder ratio.
d. Pressure in excess of valve
rating.
d. Check relief valve setting or
pump compensation with that
recommended.
e. Electrical failure. e. Check wiring and solenoids.
3. External leakage. a. Damaged O-ring or quad
rings.
a. Check for chipped packings
and replace.
b. Loose tie bolts. b. Retorque tie bolts.
c. Damaged solenoid. c. Replace damaged parts.
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 vertical jack cylinder
slow or erratic.
a. Low hydraulic oil level. a. Check for leaks. Make any
needed repairs. Fill reservoir
to proper level.
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. Damaged O-rings in
swivel. f. Replace O-rings.
g. Excessive material on beams. g. Clean outrigger beams.
h. Sticking solenoid valve spool. h. Repair or replace valve spool.
i. Damaged wiring to solenoid. i. Repair or replace wiring.
j. Weak brush springs on
collector rings.
j. Replace brush springs.
k. Collector ring dirty or glazed. k. Clean or deglaze collector
ring.
l. Directional selector switch
sticking.
l. Clean or replace switch.
Symptom Probable Cause Solution
Reference Only

Manitowoc Grove TMS800E Specifications

General

Brand	Manitowoc
Model	Grove TMS800E
Category	Construction Equipment
Language	English