Manitowoc Grove TMS800E Service And Maintenance Manual page 214

SWING SYSTEM
Symptom
4. Swing operation
slow in either
direction.
5. Swing operation
slow in one
direction only.
6. Swing brake
operation erratic.
7. Swing brake
system will not
operate.
6-6
Probable Cause
a. Damaged relief valve.
b. Improperly adjusted swing brake.
c. Electrical connectors/wiring.
d. Improperly lubricated swing bearing.
e. Improper size hose and/or fittings
installed.
f. Clogged or restricted hydraulic hoses
or fittings.
g. Worn or damaged
bearings
h. Worn or damaged swing motor.
i. Worn or damaged hydraulic pump.
j. Crane not level.
k. Damaged swing directional control
valve.
l. Two speed swing valve adjustment.
m. Hydraulic pressures and EEPROMS
not setup correctly.
a. Crane not level.
b. Damaged swing directional control
valve.
c. Clogged or restricted hose.
d. Improperly torqued turntable bearing.
e. Hydraulic pressures and EEPROMS
not setup correctly.
a. Improper brake adjustment.
b. Air in swing brake system.
c. Dirty or glazed brake disc.
d. Kinked or bent lines and/or hoses and
fittings.
e. Hydraulic pressures and EEPROMS
not setup correctly.
a. Damaged swing brake release valve.
b. Internal damage to the swing brake
assembly.
c. Loose or restricted brake lines or
fittings.
d. Hydraulic pressures and EEPROMS
not setup correctly.
Published 01-29-2014, Control # 496-00
TMS800E SERVICE MANUAL
a. Adjust, repair or replace valve.
b. Readjust.
c. Inspect connectors and wiring.
d. Lubricate
recommendations.
e. Refer to the Manitowoc Crane Care
Parts Manual.
f. Clean or replace damaged parts.
output shaft g. Replace bearings.
h. Repair or replace motor.
i. Repair or replace pump.
j. Level crane.
k. Replace
valve.
l. Check adjustment. Repair or replace
valve.
m. See pressure setting procedure.
a. Level crane.
b. Replace the swing directional control
valve.
c. Replace hose or fitting.
d. Torque turntable bearing.
e. See pressure setting procedure.
a. Adjust brake.
b. Bleed brake system.
c. Clean or replace disc.
d. Straighten or replace as required.
e. See pressure setting procedure.
a. Replace cartridge.
b. Repair or replace affected parts.
c. Tighten or replace lines and fittings.
d. See pressure setting procedure.
Solution
bearing per
swing directional control