TM 10-3950-672-10
Table 6-1. Operator Troubleshooting (continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
39.
HOIST WILL NOT LOWER LOAD.
Step 1.
Malfunctioning hoist brake.
a.
Contact Organizational Maintenance.
40.
SLOW OR ERRATIC HOIST OPERATION.
Step 1.
Low engine rpm.
a.
Increase rpm.
Step 2.
Hydraulic system failure.
a.
Contact Organizational Maintenance.
41.
BOOM SWING OPERATIONS ERRATIC IN EITHER DIRECTION.
Step 1.
Low engine rpm.
a.
Increase rpm.
Step 2.
Low hydraulic oil.
a.
Check hydraulic oil level. Refer to PMCS in Section 5. If
OK, do step 3.
b.
Service hydraulic reservoir.
Step 3.
Insufficient lubricant on swing bearing.
a.
Inspect swing bearing. Lubricate bearing. Refer to
Step 4.
Crane not level.
a.
Level crane using outriggers.
Step 5.
Crane overloaded.
a.
Reduce load.
6-28
