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TM 9-2320-364-10
3-29
Table 3-1. Troubleshooting - CONT.
Malfunction
Test or Inspection
Corrective Action
MATERIAL HANDLING CRANE (MHC) (CONT).
1.
MHC WILL NOT OPERATE (CONT).
NOTE
If high idle or remote control operates, the crane overload protection is
operating when the main hydraulic pressure override is turned CCW and
pulled out.
Step 8. Turn MHC Main Hydraulic Pressure Manual Override (5) CCW and
pull out. Check that outrigger can be lowered to maintain full
contact with ground.
If outrigger jacks can not be lowered, go to Step (10).
If outrigger jacks can be lowered, go to Step (9).
Step 9. Try to manually operate other MHC controls on main control
valve bank.
If all functions operate, leave MHC Main Hydraulic Pressure
Manual Override (5) out and complete MHC operation. Notify
Unit Maintenance upon completion of mission.
If functions do not operate, go to Step 10.
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