TEST OPTIONS
REASON FOR QUESTION
YES
NO
Is continuity present
between terminal blocks
TBC(1), TBC(2), TBC(3),
TBC(4) and TBC(5)?
Replace jumper wire between terminal blocks
that continuity is not present (para 7-33).
If continuity is not present,
jumper wire is faulty.
Continuity Test or
STE/ICE-R Test #91
KNOWN INFO
3.
TM 9-2320-366-20-2
2-1456
Change 1
POSSIBLE PROBLEMS
e140. MAIN WINCH LH OR RH FREESPOOL SWITCH DOES NOT OPERATE FROM WRECKER
CONTROL PANEL (CONT)
LH and RH winches operate
from wrecker control panel.
Circuit breaker CB50 OK.
STATION SELECTOR switch to
WRECKER CONTROL PANEL.
MODE SELECTOR SWITCH to
NORMAL.
MAIN WINCH LH and RH
SPEED switches operate.
LH 30K winch freespools.
MAIN WINCH LH FREESPOOL
switch OK.
30K winch pneumatic manifold
solenoid L19 OK.
MAIN WINCH RH FREESPOOL
switch OK.
M1089 control panel
wiring harness OK.
Faulty M1089 30K winch
control wiring harness.
Faulty jumper wire.
Faulty 30K winch pneumatic
manifold solenoid L17.
Faulty wrecker air system.