6-7
TMS800E SERVICE MANUAL SWING SYSTEM
Published 01-29-2014, Control # 496-00
8. Swing brake drags. a. Damaged swing brake release valve. a. Replace cartridge.
b. Internal damage to the swing brake
assembly.
b. Repair or replace affected parts.
c. Loose or restricted brake lines or
fittings.
c. Tighten or replace brake lines and
fittings.
d. Hydraulic pressures and EEPROMS
not setup correctly.
d. See pressure setting procedure.
9. Swing motor
continues to
operate when
swing control is in
neutral.
a. Control valve sticking or valve
otherwise damaged.
a. Repair or replace valve.
10. Superstructure
swings slowly.
a. Insufficient hydraulic volume. a. Check delivery of hydraulic pump.
Ensure sufficient fluid is available to
pump. Check pump speed.
b. Damaged relief valve. b. Adjust, repair, or replace valve.
c. Damaged swing motor. c. Repair or replace motor.
11. Swing motor
turning in wrong
direction.
a. Improper port connections. a. Reverse port connections.
b. Improper wiring connections. b. Inspect connections.
12. Swing motor noisy. a. Air in system. a. Refer to Hydraulic System, page 2-1,
for removal of air from the system.
b. Motor binding. b. Repair or replace motor.
Symptom Probable Cause Solution
Reference Only
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