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Page Title:
MAIN WINCH LH OR RH SPEED SWITCH DOES NOT OPERATE FROM WRECKER CONTROL PANEL |
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 TM 9-2320-366-20-2
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)
Personnel Required
References
(2)
TM 9-4910-571-12&P
NOTE
Perform Electrical System Troubleshooting
task e1. Circuit Breaker Does Not Operate on
circuit breaker CB50 prior to beginning this
task.
START
WARNING
Read WARNING
KNOWN INFO
TEST OPTIONS
on following page.
1.
LH and RH winches operate
Operational Test
from wrecker control panel.
Does MAIN WINCH LH
REASON FOR QUESTION
Circuit breaker CB50 OK.
SPEED switch operate?
STATION SELECTOR switch to
This question eliminates
WRECKER CONTROL PANEL.
possible problems and
MODE SELECTOR SWITCH to
determines where
NORMAL.
troubleshooting continues.
POSSIBLE PROBLEMS
NO
Faulty STATION SELECTOR
switch.
Faulty MAIN WINCH LH
SPEED switch.
Faulty MAIN WINCH RH
SPEED switch.
YES
Go to step 4 of this fault.
Faulty M1089 control panel
wiring harness.
Faulty M1089 30K winch
control wiring harness.
Faulty M1089 control panel
power cable assembly.
Faulty M1089 rear lights cable
assembly.
Faulty auxiliary panel cable
assembly.
Faulty dashboard cable
assembly.
Faulty jumper wire.
Faulty wrecker hydraulic
system.
Change 1
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