HOIST DOES NOT OPERATE OR OPERATES SLOWLY. (Cont) -726250728

TM 9-2320-364-34-1

18. HOIST DOES NOT OPERATE OR OPERATES SLOWLY (CONT).

KNOWN INFO

TEST OPTIONS

WARNING

Read WARNING

Unit Troubleshooting

Operation test.

on Page 2-645

tasks completed.

Boom operates.

REASON FOR QUESTION

Four valve bank OK.

Does hoist motor operate

If mechanical component (not

hoist brake) inside hoist drum is

when disconnected from

POSSIBLE PROBLEMS

faulty, hoist motor will operate

hoist assembly?

when hoist motor shaft is

Hoist motor faulty.

disengaged from hoist assembly.

Hoist assembly faulty.

Replace hoist motor

(Para 16-12).

Verify repair, go to

Step 5 of this Fault.

YES

Notify supervisor.

2-644