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 1071 of 1417

INSPECTION

Inspect drivebelt for cracks, splits, and breaks. Replace drivebelt if cracked, split, or broken.

END OF TASK

INSTALLATION

1.

Install drivebelt (Figure 3, Item 8) over pump pulley (Figure 3, Item 7) and accessory drive pulley

(Figure

3,

Item

5).

2.

Using brass drift punch (Figure 3, Item 11), turn stud (Figure 3, Item 9) clockwise for preliminary belt

(Figure

3,

Item

8) tightening.

3.

Check drivebelt (Figure 3, Item 8) tension. See ADJUSTMENT.

4.

Tighten six screws (Figure 3, Item 6).

NOTE

An assistant will help with Step (5).

5.

Raise fan pulley bracket (Figure 3, Item 3) and install lockwasher (Figure 3, Item 2), screw (Figure 3, Item 1),

two washers (Figure 3, Item 13), lockwashers (Figure 3, Item 14), screws (Figure 3, Item 15), washers

(Figure 3, Item 17), and screws (Figure 3, Item 16). Do not tighten screws.

6.

Recheck drivebelt tension. See ADJUSTMENT.

7.

If drivebelt (Figure 3, Item 8) tension is satisfactory, tighten screws (Figure 3, Items 1, 15, and 16).

TM 9-2320-272-23-2

0294

0294-6