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 118 of 346

TM 9-2350-261-20-1

ENGINE OVERHEATS — Continued

0007 00

8Y

1.

Allow system to remain pressurized for 5 minutes.

2.

Does pressure drop less than one psi?

8YN

1.

Internal coolant system leak.

2.

Notify your supervisor.

9Y

1.

Check to see if thermostat has been replaced.

2.

Has thermostat been replaced?

9YN

1.

Replace thermostat (WP 0200 00).

2.

Verify no faults found.

10Y

1.

Replace coolant pump (WP 0197 00).

2.

Verify no faults found.

BY

1.

Stop engine (see your -10).

2.

Remove ventilating fan drive belt (WP 0211 00).

3.

Manually rotate ventilating fan drive shaft pulley (1).

4.

Does fan spin freely?

BYN

1.

Notify your supervisor.

B2Y

1.

Faulty transfer gear case.

2.

Notify your supervisor.

0007 00-5/6 blank