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TM 9-2320-364-20-3
2-2774
19. CRANE HIGH IDLE NOT WORKING.
INITIAL SETUP
1.
Does engine high idle engage
with HIGH IDLE switch held in
the LATCH position?
Go to Step 11 of this
Fault.
START
NO
Crane operates.
Red wire from terminal 17 to
relay faulty.
Green wire from relay to ground
faulty.
Black wire from terminal 3 to
relay faulty.
Relay faulty.
Blue wire from relay to diode
faulty.
Diode faulty.
Red wire from diode to HIGH
IDLE switch faulty.
Green jumper wire on HIGH
IDLE switch faulty.
HIGH IDLE switch faulty.
Wire 231 faulty.
Relay R22 faulty.
Black wire from power switch to
HIGH IDLE switch faulty.
HIGH IDLE switch faulty.
Green wire from HIGH IDLE
switch to terminal 17 faulty.
White wire from terminal 17 to
crame connector faulty.
Wire 1737 faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Operation test.
If the engine high idle engages
with the switch held in the
LATCH position, DDEC circuit
is OK.
2-29. CRANE TROUBLESHOOTING (CONT).
Tools and Special Tools
Tool Kit, General Mechanic’s: Automotive
(Item 74, Appendix G)
STE/ICE-R (optional) (Item 3, Appendix G)
Multimeter (Item 44, Appendix G)
Rivet Gun (Item 58, Appendix G)
Personnel Required
Two
Equipment Condition
Engine OFF, (TM 9-2320-364-10)
Parking brake applied, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
Crane outriggers down, (TM 9-2320-364-10)
Mast fully erected, (TM 9-2320-364-10)
References
TM 9-2320-364-10
TM 9-4910-571-12&P
YES
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