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Page Title: MAIN WINCH LH OR RH FREESPOOL SWITCH DOES NOT OPERATE FROM WRECKER CONTROL PANEL (cont)
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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
14.
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 TBC to wire
STATION SELECTOR switch to
If continuity is not present,
C?
WRECKER CONTROL PANEL.
M1089 winch control wiring
MODE SELECTOR SWITCH to
harness is faulty. If continuity
NORMAL.
is present, 30K winch
MAIN WINCH LH and RH
pneumatic solenoid L19 is
SPEED switches operate.
faulty.
RH 30K winch freespools.
NO
MAIN WINCH RH FREESPOOL
switch OK.
Faulty 30K winch pneumatic
manifold solenoid L17.
MAIN WINCH LH FREESPOOL
switch OK.
Replace M1089 winch control
YES
M1089 control panel
wiring harness (para 7-142).
wiring harness OK.
Faulty jumper wire.
POSSIBLE PROBLEMS
Faulty M1089 30K winch
control wiring harness.
Faulty 30K winch pneumatic
manifold solenoid L19.
Faulty wrecker air system.
Replace 30K winch pneumatic
manifold solenoid L19 (para 17-29).
Change 1

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