TM 9-2320-272-24-2
MECHANICAL TROUBLESHOOTING INDEX (Contd)
TROUBLESHOOTING
MALFUNCTION
MALFUNCTION
PROCEDURE
NO.
PAGE
AIR COMPRESSOR
Low air pressure (no air leaks, governor properly adjusted and
44.
operative) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-12
Air compressor passes excessive oil (excessive oil bled from air
45.
reservoirs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-12
46.
Air compressor does not unload (air governor adjusted and operative) . .
4-12
Air compressor head leaking water. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
47.
4-13
STEERING
Steering wheel hard to turn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
48.
4-13
Excessive power steering pump noise. . . . . . . . . . . . . . . . . . . . . . . . . . . .
49.
4-13
50.
Oil leaking from steering pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-13
51.
Steering gear leaking oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-13
52.
Excessive play at steering wheel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-13
FRONT/REAR AXLES
53.
Excessive play (backlash) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-14
Excessive noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
54.
4-14
55.
Lubricant leaking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-14
DUMP BODY
56.
Dump raises to full dump position, but does not power down . . . . . . . . .
4-14
Dump body does not hold in raised position . . . . . . . . . . . . . . . . . . . . . . .
57.
4-14
Hoist assembly does not raise dump body . . . . . . . . . . . . . . . . . . . . . . . .
58.
4-14
Dump hoist is inoperative or operates slowly. . . . . . . . . . . . . . . . . . . . . .
59.
4-15
MEDIUM WRECKER CRANE
60.
Boom does not respond properly when boom control levers are moved . .
4-21
61.
All boom controls operate abnormally. . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-32
Swing control operates abnormally; all other controls operate normally.
4-32
63.
Crowd control operates abnormally; all other controls operate normally.
4-32
64.
Hoist control operates abnormally; all other controls operate normally. .
4-32
65.
Boom control operates abnormally; all other controls operate normally .
4-32
POWER TAKEOFF
66.
Noisy power takeoff. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-33
67.
Power takeoff slips out of gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-33
68.
Lubricant leaking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-33
FRONT WINCH
69.
Front winch is inoperative or operates slowly . . . . . . . . . . . . . . . . . . . . .
4-33
4-3
