TM-9-2320-283-20-1

TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1

TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE PART 1 OF 3

DECEMBER 1983

TM-9-2320-283-20-1 - Page 771 of 926

TM 9-2320-283-20-1

COOLING SYSTEM.

3-52.

COOLING SYSTEM SERVICE (Continued).

LOCATION/ITEM

ACTION

REMARKS

A.

DRAINING (Continued).

6.

Plug (10).

Remove from item (11).

7.

Thermostat (11).

a. Place a suitable container

underneath.

b. Remove from item (12) and

Do not remove item (12)

let coolant drain out.

from item (13).

c. When coolant stops drain-

ing, wrap threads with

thread sealing tape, and

reinstall into item (12).

8.

Heater control

Open, and let coolant drain

Refer to TM 9-2320-283-

valve.

out of heating system.

10.

B.

CLEANING AND FLUSHING.

NOTE

If it is necessary to clean and flush the cooling system,

refer to TM 750- 254

(Cooling

Systems:

Tactical

Vehicles).

C.

INSPECTION OF DRAINCOCKS.

9.

Three draincocks

a.

Remove from items (6), (3),

(5), (7), and (8).

and (9).

b.

Clean and inspect.

Refer to paragraphs 3-4

and 3-5.

c.

Wrap threads with thread

Refer to paragraph 3-7.

sealing tape.

d.

Install into items (6),

(3), and (9), and close.

3-254