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CONTINUITY TEST - TM-9-2320-366-20-20529
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TM-9-2320-366-20-2 M1083 Series 5-Ton 6 x 6 Medium Tactical Vehicles (MTV) Manual
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CONTINUITY TEST - TM-9-2320-366-20-20531
TM 9-2320-366-20-2
TM
e131. M1089 MATERIAL HANDLING CRANE (MHC) BOOM DOWN LOCKOUT DOES NOT ACTIVATE
INITIAL SETUP
Tools and Special Tools
Equipment Conditions
Tool Kit, Genl Mech (Item 46, Appendix C)
Batteries disconnected (para 7-57).
Multimeter, Digital (Item 22, Appendix C)
STE/ICE-R (Item 41, Appendix C)
References
TM 9-4910-571-12&P
START
KNOWN INFO
TEST OPTIONS
1.
Battery voltage OK.
Continuity Test or
Input voltage to overload
STE/ICE-R #91
Is continuity present
REASON FOR QUESTION
shutdown system OK.
from boom down lockout
Hydraulic system shutdown
Boom down lockout will
solenoid cable connector
solenoid OK.
not operate if continuity
socket 1 to terminal
Hydraulic system shutdown
is not present at boom
board position 19?
relay OK.
down lockout solenoid
Crane functions OK.
cable connector socket 1.
Overload lockout cable OK.
NO
Overload shutdown box OK.
Tension load cell OK.
Proximity sensor OK.
POSSIBLE PROBLEMS
YES
Faulty boom down lockout
Replace boom down lockout
solenoid cable.
solenoid cable (para 7-105).
Faulty solenoid valve.
KNOWN INFO
TEST OPTIONS
2.
Battery voltage OK.
Continuity Test or
Input voltage to overload
STE/ICE-R #91
Is continuity present from
REASON FOR QUESTION
shutdown system OK.
boom down lockout solenoid
Hydraulic system shutdown
Boom down lockout will
cable connector socket 2
solenoid OK.
not operate if continuity
to ground?
Hydraulic system shutdown
is not present from boom
relay OK.
down lockout solenoid
Crane functions OK.
cable connector socket 2
Overload lockout cable OK.
to ground.
NO
Overload shutdown box OK.
Tension load cell OK.
Proximity sensor OK.
Continuity to boom down
Replace boom down lockout
YES
lockout solenoid OK.
solenoid cable (para 7-105).
POSSIBLE PROBLEMS
Faulty boom down lockout
solenoid cable.
Faulty solenoid valve.

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