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

TM 9-2320-366-20-2

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

CONTROL PANEL (CONT)

WARNING

Read WARNING

KNOWN INFO

TEST OPTIONS

on following page.

Voltage Test or

LH and RH winches operate

STE/ICE-R Test #89

from wrecker control panel.

Is 24 VDC present at

REASON FOR QUESTION

Circuit breaker CB50 OK.

terminal block TB19?

STATION SELECTOR switch to

If 24 VDC is not present, MAIN

WRECKER CONTROL PANEL.

WINCH LH FREESPOOL

MODE SELECTOR SWITCH to

switch and M1089 wrecker

NORMAL.

control panel wiring harness

MAIN WINCH LH and RH

are faulty.

SPEED switches operate.

RH 30K winch freespools.

MAIN WINCH LH FREESPOOL

switch OK.

30K winch pneumatic manifold

solenoid L17 OK.

Replace MAIN WINCH LH FREESPOOL

POSSIBLE PROBLEMS

YES

switch (para 7-34) and M1089 wrecker control

panel wiring harness (para 7-83).

Faulty MAIN WINCH LH

FREESPOOL switch.

Faulty M1089 control panel

wiring harness.

Faulty M1089 30K winch

control wiring harness.

Faulty jumper wire.

Faulty 30K winch pneumatic

manifold solenoid L19.

Faulty wrecker air system.

2-1456.6

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