TM 5-3810-307-24-1-1
Organizational Troubleshooting - Continued
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
SWING SYSTEM
1. Boom swing operation
a. Restricted or partially
a. Clear lines or fittings. Replace
erratic in either direction.
clogged hydraulic lines or
as necessary.
fittings.
b. Clogged joystick pilot control
b. Replace filter as necessary.
system filter.
c. Loose suction line or fittings
c. Tighten suction line or fittings.
allowing air in system.
d. Insufficient lubrication on
d. Lubricate turntable bearing.
turntable bearing.
e. Improperly torqued swing
e. Retorque swing motor attaching
motor attaching capscrews.
capscrews.
f. Improperly torqued turntable
f. Retorque turntable capscrews.
capscrews.
2. Boom swing operation
a. Restricted or partially
a. Clear lines or fittings. Replace
erratic in one direction
clogged hydraulic lines or
as necessary.
only.
fittings.
b. Insufficient lubrication on
b. Lubricate turntable bearing.
turntable bearing.
3. Swing operation slow.
a. Restricted or partially
a. Clear lines or fittings. Replace
clogged hydraulic lines or
as necessary.
fittings.
b. Clogged joystick pilot control
b. Replace filter as necessary.
system filter.
c. Insufficient lubrication on
c. Lubricate turntable bearing.
turntable bearing.
4. Swing brake operation
Kinked or damaged hydraulic
Straighten or replace lines as
erratic.
lines.
necessary.
5. Swing motor noisy.
Air in hydraulic system
Bleed air from system.
6. Swing motor turning in
Port connections reversed.
Reverse port connections.
wrong direction.
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