M1089 MATERIAL HANDLING CRANE (MHC) DOES NOT OPERATE

TM 9-2320-366-20-3

w1. M1089 MATERIAL HANDLING CRANE (MHC) DOES NOT OPERATE

INITIAL SETUP

Equipment Conditions

Tools and Special Tools

Engine shut down (TM 9-2320-366-10-1).

Tool Kit, Genl Mech (Item 46, Appendix C)

START

KNOWN INFO

TEST OPTIONS

Visual inspection

PTO OK.

REASON FOR QUESTION

Left 30K winch OK.

Are hydraulic tubes

Oil quantity may be

Right 30K winch OK.

and fittings to MHC

insufficient to operate

Stifflegs OK.

free from leaks and

MHC if hydraulic hoses

15K self-recovery

damage?

are leaking or damaged.

winch OK.

Underlift OK.

POSSIBLE PROBLEMS

Damaged hydraulic tube(s)

or fitting(s).

Faulty electrical system.

Replace damaged oil

YES

tube(s) and fitting(s)

(para 17-15).

Perform Electrical System

Troubleshooting (e120. M1089

Material Handling Crane (MHC)

Does Not Operate).

2-2244