Manitowoc Grove RT880E User Manual

SWING SYSTEM RT880E SERVICE MANUAL
6-4 Published 11-10-2014, Control # 524-00
3. Boom will not swing
in either direction.
a. Damaged relief valve. a. Remove, clean, and repair or replace
relief valve.
b. Damaged swing motor. b. Repair or replace swing motor.
c. Swing brake not releasing properly. c. Repair as necessary.
d. Damaged hydraulic remote control
valve.
d. Replace hydraulic remote control
valve.
e. Internal damage to swing box. e. Remove swing box and repair.
f. Worn or damaged hydraulic pump. f. Replace pump section.
g. Damaged swing directional control
valve.
g. Replace swing directional control
valve.
h. Damaged swing pinion. h. Replace pinion.
i. Damaged turntable bearing. i. Replace turntable bearing.
j. Excessive overload. j. Reduce load. Refer to load capacity
chart.
4. Swing operation
slow in either direc-
tion.
a. Damaged relief valve. a. Adjust, repair or replace valve.
b. Improperly adjusted swing brake. b. Readjust.
c. Damaged hydraulic remote control
valve.
c. Replace hydraulic remote control
valve.
d. Improperly lubricated swing bearing. d. Lubricate bearing per
recommendations in Turntable, page 9-
17.
e. Improper size hose and/or fittings
installed.
e. Refer to the Parts Manual.
f. Clogged or restricted hydraulic hoses
or fittings.
f. Clean or replace damaged parts.
g. Worn or damaged output shaft
bearings
g. Replace bearings.
h. Worn or damaged swing motor. h. Repair or replace motor.
i. Worn or damaged hydraulic pump. i. Repair or replace pump.
j. Crane not level. j. Level crane.
k. Damaged swin
g directional control
valve.
k. Replace swing directional control
valve.
5. Swing operation
slow in one direc-
tion only.
a. Crane not level. a. Level crane.
b. Damaged hydraulic remote control
valve.
b. Replace hydraulic remote control
valve.
c. Damaged swing directional control
valve.
c. Replace the swing directional control
valve.
d. Clogged or restricted hose. d. Replace hose or fitting.
e. Improperly torqued turntable bearing. e. Torque turntable bearing.
Symptom Probable Cause Solution

Manitowoc Grove RT880E Specifications

General

Brand	Manitowoc
Model	Grove RT880E
Category	Construction Equipment
Language	English