M1089 STIFFLEG(S) DOES NOT OPERATE OR OPERATES SLOWLY

TM 9-2320-366-20-3

w3. M1089 STIFFLEG(S) DOES NOT OPERATE OR OPERATES SLOWLY

INITIAL SETUP

Tools and Special Tools

Equipment Conditions

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

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

STE-ICE-R (Item 41, Appendix C)

Pan, Drain (Item 24, Appendix C

Personnel Required

Trestle, Motor Vehicle Maintenance (Item 47, Appendix C)

(2)

Goggles, Industrial (Item 15, Appendix C)

Transducer, STE/ICE-R (Item 1, Appendix J)

Materials/Parts

Rag, Wiping (Item 50, Appendix D)

References

Lockwasher (6) (Item 100, Appendix G)

TM 9-4910-571-12&P

Cap and Plug Set (Item 14, Appendix D)

START

WARNING

Read WARNING

KNOWN INFO

TEST OPTIONS

on following page.

Hydraulic oil level OK.

Visual inspection

REASON FOR QUESTION

PTO OK.

Are hydraulic hoses, tubes

Left 30K winch OK.

Leaking hydraulic

and fittings free from leaks

15K self-recovery

hoses, tubes or fittings

or damage?

winch OK.

will cause stifflegs to

operate slowly or not at

POSSIBLE PROBLEMS

all.

Faulty hydraulic hoses

tubes and fittings.

Faulty upper main control

valve.

Faulty stiffleg relief valve.

Tighten loose fitting(s) and replace damaged

Faulty stiffleg cylinder.

hydraulic hose(s), tubes(s) and fitting(s)

(para 19-16, 19-17).

YES

2-2248