TM-9-2320-279-34-1
M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)
TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS DIRECT SUPPORT AND GENERAL SUPPORT, VOLUME 1 OF 3
TM-9-2320-279-34-1 - Page 34 of 709
TM 9-2320-279-34-1
Troubleshooting Index (Cont)
2-7. TROUBLESHOOTING INSTRUCTIONS (CONT).
Table 2-2.
Troubleshooting
Subject Index (Cont)
Subject
Vehicle System
Page
Boom lowers under load or will not hold load .
....................... .
Boom moves slowly .
.............................................. .
Boom operation erratic when telescoping in .
........................ .
Boom operates abnormally, slowly, will not telescope in or out, or raise
or lower .
....................................................... .
Boom raises or lowers slowly
...................................... .
Boom will not telescope out
........................................ .
Boom will not go to maximum height
............................... .
Boom will not hold load .
.......................................... .
Boom will not lift load
............................................. .
Boom will not lower (M977, M985)
................................. .
Boom will not lower or will not lower completely .
................... .
Boom will not raise .
.............................................. .
Boom will not raise load
........................................... .
Boom will not telescope in
......................................... .
Cable, winch will not pay out
...................................... .
Control rods do not move complete in or out .
........................ .
Coolant pump fails to operate (indicator light comes on) .
............. .
Crane bounces, jerks, or does not operate smoothly .
................. .
Crane chatters when nearing maximum travel in any function or
when operating with near maximum load .
........................ .
Crane controls sticking
............................................ .
Crane controls will not move
...................................... .
Crane creeps clockwise or counterclockwise .
........................ .
Crane does not rotate .
............................................ .
Crane folds too quickly (falls when folding) .
........................ .
Material Handling
Crane (M983) . . . . . . . . . 2-47
Material Handling
Crane (M983)
. . . . . . . . . 2-50
Material Handling
Crane (M977, M985) . . . 2-93
Material Handling
Crane (M977, M985) . . . 2-90
Material Handling
Crane (M977, M985) . . . 2-87
Material Handling
Crane (M977, M985) . . . 2-100
Material Handling
Crane (M983) . . . . . . . . . 2-44
Material Handling
Crane (M977, M985) . . . 2-107
Material Handling
Crane (M9831
. . . . . . . . . 2-45
Material Handling
Crane (M977, M985) . . . 2-106
Material Handling
Crane (M983)
. . . . . . . . . 2-42
Material Handling
Crane (M977, M985) . . . 2-100
Material Handling
Crane (M977, M985) . . . 2-100
Material Handling
Crane (M977, M985) . . . 2-101
Heavy Duty Winch . . . . . . 2-27
Material Handling
Crane (M983)
. . . . . . . . . 2-69
Arctic Heater Kit . . . . . . . 2-128
Material Handling
Crane (M977, M985) . . . 2-124
Material Handling
Crane (M983) . . . . . . . . . 2-32
Material Handling
Crane (M977, M985) . . . 2-123
Material Handling
Crane (M977, M985) . . . 2-123
Material Handling
Crane (M983) . . . . . . . . . 2-54
Material Handling
Crane (M983)
. . . . . . . . . 2-54
Material Handling
Crane (M983)
. . . . . . . . . 2-50
2-6
Change 3
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