Manitowoc Grove RT530E-2 Service And Maintenance Manual page 202

SWING SYSTEM
Symptom
3. Boom will not swing
in either direction.
4. Swing operation
slow in either
direction.
5. Swing operation
slow in one
direction only.
6-4
Probable Cause
a. Damaged relief valve.
b. Damaged swing motor.
c. Swing brake not releasing properly.
d. Damaged hydraulic remote control
valve.
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.
a. Damaged relief valve.
b. Improperly adjusted swing brake.
c. Damaged hydraulic remote control
valve.
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.
a. Crane not level.
b. Damaged hydraulic remote control
valve.
c. Damaged swing directional control
valve.
d. Clogged or restricted hose.
e. Improperly torqued turntable bearing.
Published 4-22-15, Control # 556-00
RT530E-2 SERVICE MANUAL
a. Remove, clean, and repair or replace
relief valve.
b. Repair or replace swing motor.
c. Repair as necessary.
d. Replace
valve.
e. Remove swing box and repair.
f. Replace pump section.
g. Replace
valve.
h. Replace pinion.
i. Replace turntable bearing.
j. Reduce load. Refer to load capacity
chart.
a. Adjust, repair or replace valve.
b. Readjust.
c. Replace
valve.
d. Lubricate bearing per
recommendations.
e. Refer to the 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.
a. Level crane.
b. Replace
valve.
c. Replace the swing directional control
valve.
d. Replace hose or fitting.
e. Torque turntable bearing.
Solution
hydraulic remote control
swing directional control
hydraulic remote control
swing directional control
hydraulic remote control