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TM 9-2320-364-20-2
2-936
1. ENGINE FAILS TO CRANK.
INITIAL SETUP
1.
Replace faulty
batteries (Para 7-88).
Verify repair, go to
Step 20 of this Fault.
START
YES
NO
22 to 28 vdc register on 24 vdc
volt meter indicating wire 1055
between DUVAC and starter
motor is OK.
Batteries faulty.
ENGINE switch faulty.
Wire 1021 faulty.
Wire 1871 faulty.
Diode M36 faulty.
Wire 231 faulty.
Wire 210A faulty.
Wires 208/209 faulty.
NEUTRAL relay R11 faulty.
Wire 1281 faulty.
Wire 1021A faulty.
Wire 1435 faulty.
Magnetic switch R27 faulty.
Wire 1139 faulty.
Wire 1045 faulty.
Wire 1138 faulty.
Start ground wire faulty.
Starter motor solenoid faulty.
Starter motor faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
STE/ICE-R #73 and #75.
Batteries may not have capacity
to crank engine even though 12
and 24 vdc volt meters indicate
correct voltage.
2-16. ENGINE TROUBLESHOOTING (CONT).
Tools and Special Tools
Tool Kit, General Mechanic’s: Automotive
(Item 74, Appendix G)
STE/ICE-R (Item 3, Appendix G)
Multimeter (Item 44, Appendix G)
Remover, Connector (Item 55, Appendix G)
Wrench, Torque (0 to 175 lb-ft [0-237 N.m])
(Item 95, 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)
References
TM 9-2320-364-10
TM 9-4910-571-12&P
Materials/Parts
Compound, Corrosion Preventive
(Item 34, Appendix C)
Lockwasher (19) (Item 195, Appendix F)
Do batteries pass load test?
WARNING
Read WARNING
on Page 2-937
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