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)

KNOWN INFO

TEST OPTIONS

11.

Continuity Test or

LH and RH winches operate

STE/ICE-R Test #91

from wrecker control panel.

Is continuity present from

REASON FOR QUESTION

Circuit breaker CB50 OK.

terminal block TB18 to

STATION SELECTOR switch to

wire 18?

If continuity is not present,

WRECKER CONTROL PANEL.

M1089 winch control wiring

MODE SELECTOR SWITCH to

harness is faulty.

NORMAL.

MAIN WINCH LH and RH

SPEED switches operate.

LH 30K winch freespools.

MAIN WINCH LH FREESPOOL

switch OK.

Faulty 30K winch pneumatic

manifold solenoid L19.

MAIN WINCH RH FREESPOOL

Replace M1089 winch control

YES

switch OK.

wiring harness (para 7-142).

M1089 control panel

wiring harness OK.

Faulty jumper wire.

POSSIBLE PROBLEMS

Faulty M1089 30K winch

control wiring harness.

Faulty 30K winch pneumatic

manifold solenoid L17.

Faulty wrecker air system.

2-1456.16

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