TM 5-4310-386-14
4-20. Compressor Drive Belt and Pulleys (Cont).
b.
Replace. (figure 4-22).
NOTE
When only one belt is stretched, worn, or damaged, always replace both belts.
(1)
Loosen bolt (1) on idler pulley control arm (2).
(2)
Pull idler pulley control arm (2) up.
(3)
Remove drive belts (3) and discard.
(4)
Remove bolt (1) and idler pulley (4) and pulley control arm (2).
(5)
Remove two nuts (5), four washers (6) and bolts (7) and remove arm (8).
(6)
Remove three bolts (9) and washers (10) and remove pulley (11).
(7)
Install pulley (11) and secure with three washers (10) and bolts (9).
(8)
Install arm (8) and secure with two bolts (7), four washers (6) and two nuts (5).
(9)
Install idler pulley (4) and control arm (2) and hand tighten bolt (1).
(10)
Install belts (3) on compressor pulley (12) and engine pulley (11) and under idler pulley.
(11)
Push down on idler pulley control arm (2) until slack is removed from belts (3).
(12)
Tighten bolt (1).
(13)
Run compressor unit for 15 minutes and recheck belt tension.
FOLLOW-ON MAINTENANCE
Install beltguard (para. 4-15).
4-56
