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Published 01-29-2014, Control # 496-00
SWING SYSTEM TMS800E SERVICE MANUAL
MAINTENANCE
Troubleshooting
NOTE: CAN-bus service tool should be used to aid
troubleshooting. Service tool can be ordered
through the Manitowoc Technical Training Center.
Symptom Probable Cause Solution
1. Superstructure
swing operation
erratic in either
direction.
a. Low engine rpm a. Increase engine rpm to obtain smooth
swing operation.
b. Low hydraulic oil. b. Check for leaks. Repair any found.
Replenish hydraulic oil to proper level.
c. Damaged relief valve. c. Replace relief valve.
d. Swing brake dragging (not releasing
properly).
d. Readjust and/or replace necessary
parts.
e. Improper movement of control to
neutral.
e. Feather controls to neutral to maintain
smooth stopping action.
f. Insufficient lubricant on swing bearing. f. Lubricate bearing properly. Refer to
Section 9 - LUBRICATION.
g. Crane not level. g. Level crane using outriggers.
h. Damaged swing motor. h. Repair or replace swing motor.
i. Excessive overload. i. Reduce load. Refer to load capacity
chart.
j. Restricted or partly clogged hydraulic
hose or fittings.
j. Replace hose or fittings.
k. Pump cavitation in swing section. k. Tighten suction hose or replace any
damaged fitting. Check hydraulic tank
level.
l. Improperly torqued turntable bolts. l. Torque turntable bolts evenly.
m. Excessive preload on upper and lower
pinion shaft bearing.
m. Adjust as necessary.
n. Improperly torqued swing motor
attachment bolts.
n. Torque swing motor attachment bolts.
o. Malfunction of the swing box. o. Remove swing box and make
necessary repairs.
p. Worn or damaged pump. p. Repair or replace damaged pump.
q. Damaged swing directional control
valve.
q. Repair or replace swing directional
control valve.
r. Damaged swing pinion. r. Replace pinion.
s. Damaged turntable bearing. s. Replace turntable bearing.
t. Hydraulic p
r
essures and EEPROMS
not setup correctly.
t. See pressure setting procedure.
Reference Only
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