TM-9-2320-280-20-2

TRUCK, UTILITY: M998 SERIES

TECHNICAL MANUAL; UNIT MAINTENANCE; VOLUME 2 OF 3

JANUARY 1996

TM-9-2320-280-20-2 - Page 167 of 951

3 - 8 2 . D R

I V E B E LTS ADJUSTMENT (Cont’d)

TM 9-2320-280-20-2

Change 2

3 - 1 4 1

FOLLOW-ON TASKS: • Connect battery ground cable (para. 4-73).

FOLLOW-ON TASK

• Lower and secure hood (TM 9-2320-280-10).

Table 3-2. Belt Tension Requirements

NOT E

A used belt is one that has been run at least 15 min. or 15 mi.

(24 km.). Tension variance of not more than 20 lbs (90 N)

between belts of the same set is acceptable.

APPLICATION

All belts

NEW BELT

105 ± 5 lbs

(467 ± 22 N)

USED BELT

90 ± 5 lbs

(400 ± 22 N)

2²

.

Adjust alternator belt set (10) by inserting 1/2-inch drive ratchet and extension in square hole (12) of

alternator adjusting bracket (11.1). Turn until belt set (10) appears tight, and tighten capscrew ( 11 )

and two capscrews (13.1) securing alternator (13).

3.

Using belt tension gauge, check each belt of belt set (10) individually for proper tension. Refer to

table 3-2, Belt Tension Requirements.

4.

If belt set (10) tension is correct, tighten alternator adjusting bracket (11.1) and capscrew (11) to

40 lb-ft (54 N.m). Tighten two capscrews (13.1) to 60 lb-ft (81 N.m). If tension is not, repeat steps 2

through 4. If tension cannot be properly adjusted, replace belt set (10) (para. 3-81).