Manitowoc Grove TMS800E Service And Maintenance Manual page 213

TMS800E SERVICE MANUAL
Symptom
2. Superstructure
swing operation
erratic in one
direction only.
3. Boom will not swing
in either direction.
GROVE
Probable Cause
a. Crane not level.
b. Turntable bearing binding due to
continuous limited swing. (Example:
concrete pourer.)
c. Restricted hose or fitting.
d. Damaged swing directional control
valve.
e. Damaged swing pinion.
f. Damaged turntable bearing.
g. Electrical connections.
h. Controller settings.
a. Damaged relief valve.
b. Damaged swing motor.
c. Swing brake not releasing properly.
d. Damaged wiring/connectors.
e. Internal damage to swing box.
f. Worn or damaged hydraulic pump.
g. Damaged swing directional control
valve.
h. Damaged swing pinion.
i. Damaged turntable bearing.
j. Excessive overload.
Published 01-29-2014, Control # 496-00
SWING SYSTEM
Solution
a. Level crane using outriggers.
b. Rotate machine 360 degrees in both
directions several times and lubricate
bearing.
c. Replace hose or fitting.
d. Replace swing directional
valve.
e. Replace pinion.
f. Replace turntable bearing.
g. Inspect wiring and connectors.
h. Check settings. See item t. on previous
page.
a. Remove, clean, and repair or replace
relief valve.
b. Repair or replace swing motor.
c. Repair as necessary.
d. Inspect wiring and connectors.
e. Remove swing box and repair.
f. Replace pump section.
g. Replace swing directional
valve.
h. Replace pinion.
i. Replace turntable bearing.
j. Reduce load. Refer to load capacity
chart.
control
control
6
6-5