M1089 UNDERLIFT TELESCOPIC LIFT CYLINDER(S) DOES NOT OPERATE

TM 9-2320-366-20-3

w7. M1089 UNDERLIFT TELESCOPIC LIFT CYLINDER(S) DOES NOT OPERATE

INITIAL SETUP

Equipment Conditions

Tools and Special Tools

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

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

START

KNOWN INFO

TEST OPTIONS

Hydraulic oil level OK.

Underlift Operation Check

REASON FOR QUESTION

PTO OK.

Do underlift cylinders

If underlift operates from

Right 30K winch OK.

operate from wrecker

wrecker control panel and

Folding cylinder OK.

control panel only?

not from remote, underlift

Stinger cylinder OK.

POSSIBLE PROBLEMS

electrical system is faulty.

Faulty underlift hydraulic

system.

Faulty underlift electrical

system.

YES

Notify DS Maintenance.

Perform Electrical System

Troubleshooting (e137. All

Wrecker Functions Do Not Operate

From Wrecker Remote Control).

2-2260