TM-9-2350-261-20-1

CARRIER, M113A2, M577A2, M1064, M1068, M1059 AND M901A1

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL - VOLUME 1 OF 4

TM-9-2350-261-20-1 - Page 150 of 346

TM 9-2350-261-20-1

ENGINE CRANKS BUT WILL NOT START BELOW 40 (AIR BOX HEATER

IS USED) — Continued

0012 00

DY

1.

Remove engine harness plug (1) from air box heater

harness jack (2).

2.

Turn MASTER SWITCH to ON (see your -10).

3.

Measure voltage between engine harness plug (1) pin

A (3) to ground (4) and pin B (5) to ground (4) with air

box heater switch depressed.

4.

Turn MASTER SWITCH to OFF (see your -10).

5.

Did multimeter read less than 17 volts with both readings?

DYN

1.

Replace air box heater wiring

harness (WP 0181 00).

2.

Verify no faults found.

D2Y

1.

Remove engine harness plug (1) from front main harness

jack (2) at carrier bulkhead.

2.

Turn MASTER SWITCH to ON (see your -10).

3.

Measure voltage from front main harness jack (2) pin C (3)

andgroundwithairboxheaterswitchon

.

4.

Turn MASTER SWITCH to OFF (see your -10).

5.

Did multimeter read less than 17 volts?

D2YN

1.

Faulty engine harness. Beyond unit

maintenance repair.

2.

Notify your supervisor.

001200-9