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Page Title:
M1089 MATERIAL HANDLING CRANE (MHC) BOOM DOWN DOES NOT OPERATE FROM REMOTE STATION (cont) |
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 TM 9-2320-366-20-2
TM
e125. M1089 MATERIAL HANDLING CRANE (MHC) BOOM DOWN DOES NOT OPERATE FROM REMOTE
e125.
STATION (CONT)
KNOWN INFO
TEST OPTIONS
4.
Other crane functions from
Continuity Test or
Is continuity present
remote station OK.
STE/ICE Test #91
from remote control box
REASON FOR QUESTION
Boom down solenoid
If continuity is not present,
connector pin M to BOOM
cable OK.
remote control box internal
UP/DOWN controller
Boom down solenoid OK.
wiring harness is faulty.
internal wiring harness
External remote control
If continuity is present,
pin 4 and from remote
cable OK.
BOOM UP/DOWN
control box connector
Remote control cable OK.
POSSIBLE PROBLEMS
controller is faulty.
pin H to BOOM
Faulty remote control
UP/DOWN controller
box internal wiring
internal wiring harness
harness.
pin 1?
Faulty boom up/down
controller.
NO
YES
Repair remote control box
internal wiring harness
(para 7-32).
Replace BOOM UP/DOWN
controller (para 7-32).
2-1348
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