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Page Title:
M1089 MATERIAL HANDLING CRANE (MHC) BOOM DOWN LOCKOUT DOES NOT ACTIVATE (CONT) |
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 TM 9-2320-366-20-2
TM
e131. M1089 MATERIAL HANDLING CRANE (MHC) BOOM DOWN LOCKOUT DOES NOT ACTIVATE (CONT)
e131.
KNOWN INFO
TEST OPTIONS
3.
Battery voltage OK.
Continuity Test or
Input voltage to overload
STE/ICE-R #91
Is continuity present across
shutdown system OK.
REASON FOR QUESTION
boom down lockout solenoid
Hydraulic system shutdown
Boom down lockout will
valve contacts?
solenoid OK.
not operate if continuity is
Hydraulic system shutdown
not present across boom
relay OK.
down lockout solenoid
Crane functions OK.
valve contacts.
Overload lockout cable OK.
NO
Overload shutdown box OK.
Tension load cell OK.
Proximity sensor OK.
Boom down lockout solenoid
YES
cable OK.
Notify DS Maintenance.
POSSIBLE PROBLEMS
Faulty solenoid valve
Notify DS Maintenance.
2-1408
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