TM 3-4230-209-10
3
Alternator Drive Belt Adjustment.
1 Adjust the alternator belt (10) tension by using the tensiometer (2).
2 Set the O-ring on the small end of tensiometer (2) at the 3/8-inch mark and set
the other O-ring against the outer movable surface of the tensiometer.
of alternator belt (10).
3/8-inch mark touches straightedge (11).
5 Withdraw tensiometer (2) and read the indication on the second O-ring which
was moved along the scale by the amount of pressure applied. The indication
should be between 5 to 7 pounds.
6 If the tension is unsatisfactory, use a wrench to loosen lock-nut (13) in frame
assembly (14) that fastens adjusting bolt (15) against frame assembly (14).
7 Turn in or back out adjusting bolt (15) to increase or release the tension.
8 Test the tension several times using tensiometer (2).
frame assembly (14) to prevent any movement of the adjusting bolt (15).
10 Put the tools in the tool box of the pump unit.
11 If alternator belt (10) must be replaced, notify unit maintenance personnel.
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