MAIN WINCH LH OR RH FREESPOOL SWITCH DOES NOT OPERATE FROM WRECKER CONTROL PANEL

TM 9-2320-366-20-2

e140. MAIN WINCH LH OR RH FREESPOOL SWITCH DOES NOT OPERATE FROM WRECKER

CONTROL PANEL

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)

Wrecker control panel top cover removed

Multimeter, Digital (Item 22, Appendix C)

(para 14-4).

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

Gloves, Welder's (Item 14, Appendix C)

Personnel Required

References

(2)

TM 9-4910-571-12&P

START

WARNING

CAUTION

Read WARNING and

CAUTION on

KNOWN INFO

TEST OPTIONS

following page.

LH and RH winches operate

Operational Test

from wrecker control panel.

Does LH 30K winch

REASON FOR QUESTION

Circuit breaker CB50 OK.

freespool?

STATION SELECTOR switch to

This question eliminates

WRECKER CONTROL PANEL.

possible problems and

MODE SELECTOR SWITCH to

determines where

NORMAL.

troubleshooting continues.

MAIN WINCH LH and RH

SPEED switches operate.

POSSIBLE PROBLEMS

Faulty MAIN WINCH LH

FREESPOOL switch.

Faulty MAIN WINCH RH

YES

Go to step 5 of this fault.

FREESPOOL switch.

Faulty M1089 control panel

wiring harness.

Faulty M1089 30K winch

control wiring harness.

Faulty jumper wire.

Faulty 30K winch pneumatic

manifold solenoid L17.

Faulty 30K winch pneumatic

manifold solenoid L19.

Faulty wrecker air system.

2-1452

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