ELECTRICAL SYSTEM DOES NOT MAINTAIN A CHARGE

TM 9-2320-366-20-2

e92. ELECTRICAL SYSTEM DOES NOT MAINTAIN A CHARGE

INITIAL SETUP

Equipment Conditions

Tools and Special Tools

Engine shut down (TM 9-2320-366-10-1).

Tool Kit, Genl Mech (Item 46, Appendix C)

STE/ICE-R (Item 41, Appendix C)

Materials/Parts

Multimeter, Digital (Item 22, Appendix C)

Wire, Elect, 50 ft (Item 71, Appendix D)

Apron, Rubber (Item 3, Appendix C)

Wire, Relay Test (Item 9, Appendix E)

Gloves, Rubber (Item 13, Appendix C)

Nut, Self-Locking (Item 144.1, Appendix G) (100 AMP)

Goggles, Industrial (Item 15, Appendix C)

Nut, Self-Locking (Item 143.1, Appendix G) (200 AMP)

Tester, Antifreeze and Battery (Item 42, Appendix C)

Wrench, Torque, 0-200 lb-in. (Item 59, Appendix C)

References

Personnel Required

TM 9-6140-200-14

TM 9-4910-571-12&P

(2)

START

WARNING

Read WARNING

KNOWN INFO

TEST OPTIONS

on following page.

Engine oil pressure indicator

Battery Specific Gravity Test

light illuminates.

REASON FOR QUESTION

OIL PRESS gage operates.

Are batteries serviceable?

Engine starts.

If battery(ies) is unserviceable,

Alternator belts OK.

12 VDC circuits will not operate.

POSSIBLE PROBLEMS

Faulty battery(ies).

Faulty engine oil pressure

switch.

Faulty relay K11.

Faulty dashboard cable

assembly.

Faulty engine control cable

assembly.

Charge battery(ies) (TM 9-6140-200-14)

YES

Faulty alternator ground strap.

or replace battery(ies) (para 7-55).

Faulty alternator.

Faulty voltage regulator.

Faulty 100 AMP alternator to

reverse polarity relay 12 VDC

cable.

Faulty 200 AMP alternator to

terminal block 12 VDC cable.

Faulty 100 AMP alternator to

reverse polarity relay 24 VDC

cable.

Faulty 200 AMP alternator to

terminal block 24 VDC cable.

2-1050

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