TM 9-2320-279-34-1
Troubleshooting Index (Cont)
Table 2-7. Troubleshooting Fault Symptom index (Cont)
Troubleshooting
Procedure
Page
MATERIAL HANDLING CRANE (M977, M985) (CONT)
19.
Hoist lowers load too quickly (load drives hoist motor). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-115
20.
Swing operation slow or erratic in both directions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-117
21.
Swing operation erratic or slow in one direction only. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-119
22.
Swing system will not work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
2-122
23.
Swing motor continues to operate when swing control is in neutral position
2-124
24.
Swing motor noisy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-125
25.
Crane controls sticking or control will not move
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-126
26.
Crane bounces or jerks or does not operate smoothly when crane controls are operated or
returned to neutral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-126.1
27.
Remote controller will not operate crane in one function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-126.2
RETRIEVAL SYSTEM
1.
Lift cylinder will not lift load. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-126.5
2.
Lift cylinder will not extend
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-126.5
3.
Tow cylinder will not extend
4.
Tow cylinder will not retract ........................................................................................................................
2-126.5
2-126.5
ARCTIC HEATER
1.
Coolant pump fails to operate (indicator light comes on). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
2-128
Table 2-2. Troubleshooting Subject index
Subject
Vehicle System
Page
Automatic shifts occur at too high speed . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic shifts occur at too low speed or shifts rough . . . . . . . . . . . . . . .
Boom extension no. 1 or no. 2 will not extend or will not fully extend . . .
Boom extension no. 1 or no. 2 will not hold load extended or
retracted, or creeps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Boom extensions no. 1 and no. 2 will not retract or will not fully retract
Boom extensions no. 3 and no. 4 will not extend or will not fully extend
Boom extensions no. 3 and no. 4 will not hold load extended or
retracted, or creeps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Boom extensions no. 3 and no. 4 will not retract or will not fully
r e t r a c t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmission . . . . . . . . . . . 2-18
Transmission . . . . . . . . . . . 2-19
Material Handling
Crane (M983)
. . . . . . . . . 2-39
Material Handling
Crane (M983) . . . . . . . . . 2-40
Material Handling
Crane (M983) . . . . . . . . . 2-41
Material Handling
Crane (M983) . . . . . . . . . 2-37
Material Handling
Crane (M983) . . . . . . . . . 2-38
Material Handling
Crane (M983) . . . . . . . . . 2-38
Change
3
2-5