3-82. DRIVEBELTS ADJUSTMENT (Cont’d)
TM 9-2320-280-20-2
Change 2
3-141
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
NOTE
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)
2.
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).
