TM-9-2320-272-23-2

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 2 OF 5

SEPTEMBER 2012

TM-9-2320-272-23-2 - Page 1029 of 1417

REMOVAL

1.

Loosen clamp (Figure 1, Item 6) and disconnect radiator inlet hose (Figure 1, Item 7) from thermostat housing

(Figure 1, Item 5).

2.

Loosen two clamps (Figure 1, Item 9) and remove radiator bypass hose (Figure 1, Item 10) from thermostat

housing (Figure 1, Item 5) and radiator bypass tube (Figure 1, Item 8).

3.

Remove four screw assembled lockwashers (Figure 1, Item 11) from thermostat housing (Figure 1, Item 5)

and water manifold header (Figure 1, Item 1). Discard screw assembled lockwashers.

4.

Remove thermostat housing (Figure 1, Item 5) and gasket (Figure 1, Item 2) from water manifold header

(Figure

1, Item 1). Discard gasket and clean gasket remains from mating surfaces.

5.

Remove thermostat (Figure 1, Item 3) from thermostat housing (Figure 1, Item 5).

6.

Remove seal (Figure 1, Item 4) from thermostat housing (Figure 1, Item 5). Discard seal.

TM 9-2320-272-23-2

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