TM-9-2320-209-34-2-3

2½-TON, 6X6, M44A1 AND M44A2 SERIES TRUCKS (MULTIFUEL)

TECHNICAL MANUAL; MAINTENANCE; DIRECT SUPPORT AND GENERAL SUPPORT LEVEL; VOLUME 2 OF 2; PART 3 OF 3

MAY 1981

TM-9-2320-209-34-2-3 - Page 347 of 592

TM 9-2320-209-34-2-3

(4) Cycling test.

FRAME 1

1.

Be sure control switch (1) is in OFF position. Flip HI-LO switch (2) to HI

position.

Start heater (3) and let it run until it transfers to LO heat all by

itself.

2.

Wait a few minutes after heater (3) transfers to LO heat. Measure tempera-

ture of coolant at outlet hose (4) by letting coolant run on thermometer.

WARNING

Coolant will be hot.

Use caution when working near hot

coolant.

Severe burns could result.

3.

Temperature should be between 170°F and 195°F.

4.

Flip control switch (1) to OFF position. Let blower motor stop.

5.

If temperature is not as specified, get new restriction thermostat. Refer to

para 21-6c and para 21-6e.

END OF TASK

21-12