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CONTINUITY TEST - TM-9-2320-366-20-20543
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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-9-2320-366-20-20545
TM 9-2320-366-20-2
TM
e135. M1089 MATERIAL HANDLING CRANE (MHC) OVERLOAD SHUTDOWN SYSTEM STAYS ACTIVATED
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)
References
STE/ICE-R (Item 41, Appendix C)
TM 9-4910-571-12&P
START
KNOWN INFO
TEST OPTIONS
1.
Battery voltage OK.
Visual Inspection
REASON FOR QUESTION
Input voltage to overload
Is junction box internal
Shorted junction box
shutdown system OK.
wiring OK?
internal wiring will cause
Hydraulic system shutdown
overload shutdown system
to stay activated.
Hydraulic system shutdown
relay OK.
POSSIBLE PROBLEMS
NO
Faulty junction box internal
wiring.
Faulty overload lockout
Repair junction box
YES
cable.
assembly (para 7-28).
Faulty hoist layer sensing
switch.
Faulty hoist load cell.
Faulty overload shutdown
system.
KNOWN INFO
TEST OPTIONS
2.
Battery voltage OK.
Continuity Test or
Is continuity present
Input voltage to overload
STE/ICE-R Test #91
REASON FOR QUESTION
from terminal board
shutdown system OK.
Faulty overload lockout
position 19 to terminal
Hydraulic system shutdown
cable will cause overload
board position 1?
shutdown system to stay
Hydraulic system shutdown
activated.
relay OK.
NO
Crane functions OK.
POSSIBLE PROBLEMS
Faulty overload lockout
cable.
Replace overload lockout
YES
Faulty hoist layer sensing
cable (para 7-116).
switch.
Faulty hoist load cell.
Faulty overload shutdown
system.
Notify DS Maintenance.

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