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TM 5-4320-305-24
2-25. ADJUST/REPLACE V-BELTS (Continued)
INSTALLATION:
1 Install alternator V-belt (6) over alternator pulley (7) and crankshaft pulley (8).
2 Carefully push alternator (5) away from engine centerline far enough to take up slack in V-belt (6).
3 Securely tighten bolt (4) in clamping plate (9). Tighten bolt (3).
4
Install cooling air blower V-belt (2) over blower pulley (10) and crankshaft pulley (8).
5
Carefully push idler pulley (1) toward engine centerline and place V-belt (2) in pulley trough.
6
Check that V-belt is in trough of blower pulley (10), crankshaft pulley (8), and idler pulley (1), then carefully
release the idler pulley (1).
7
Check tension on V-belts (2 and 6) after tightening. When V-belt is pressed with forefinger at midpoint between
pulleys, it should deflect 1/2-3/4 inch (12.7-19.0 mm). Run engine for 10 minutes and recheck tension of belts.
Readjust as needed.
ADJUSTMENT:
1
Cooling air blower V-belt (2) tension can be adjusted only by replacing the torsion spring of the V-belt tensioner.
Notify direct support.
2
To adjust alternator V-belt (6) tension, loosen bolts (3 and 4). Carefully push alternator (5) away from engine
centerline far enough to take up slack in V-belt.
3
Tighten bolts (3 and 4) securely.
2-103
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