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 1037 of 1417

CLEANING AND INSPECTION (BOTH TYPES)

1.

Clean all parts and mating surfaces (Volume 5, WP

0819).

2.

Inspect all other parts (Volume 5, WP

0819).

3.

Replace all parts failing inspection.

END OF TASK

INSTALLATION (INTERNAL BYPASS)

1.

Install two thermostats (Figure 2, Item 9) in engine block (Figure 2, Item 10).

2.

Install gasket (Figure 2, Item 8) on engine block (Figure 2, Item 10).

3.

Install thermostat housing (Figure 2, Item 7) on engine block (Figure 2, Item 10) with two screws

(Figure

2,

Item 6).

4.

Install gasket (Figure 2, Item 5) and adapter (Figure 2, Item 4) on thermostat housing (Figure 2, Item 7) with

two screws (Figure 2, Item 1). Tighten screws (Figure 2, Items 1 and 6).

5.

Install bracket (Figure 2, Item 18) on thermostat housing (Figure 2, Item 7) with four screws

(Figure

2,

Item

17).

6.

Move alternator (Figure 2, Item 15) up with bracket (Figure 2, Item 16), and install two washers

(Figure

2,

Item

14) and screws (Figure 2, Item 13). Tighten screws 35 lb-ft (45 N·m).

7.

Tighten link screw (Figure 2, Item 12).

8.

Install hose (Figure 2, Item 2) on adapter (Figure 2, Item 4) with clamp (Figure 2, Item 3).

9.

Make sure oil cooler drain valve (Figure 2, Item 11) is closed.

TM 9-2320-272-23-2

0289

0289-4