SHIFTER A 1132634 - Caterpillar

Alternator Belt and Fan Drive Belt
Illustration 1 g00294055
(1) Mounting bolt. (2) Alternator. (3) Bracket bolt.
Check the belt tension.Note: To check the belt tension, apply 110 N (25 lb) of force midway between the pulleys. Correctly adjusted belts will deflect 13 to 19 mm (1/2 to 3/4 inch).
To adjust the alternator belt and the fan drive belt, loosen bracket bolt (3) and mounting bolt (1) on the alternator bracket.
To achieve the correct adjustment, move the alternator inward or move the alternator outward, as required.
If necessary, use a pry bar in the square hole in the mounting bracket.
Tighten mounting bolt (1) and bracket bolt (3) .Note: The alternator shaft nut must be tightened to a torque of 50 5 N m (37 4 lb ft).
If new belts are installed, check the belt adjustment again after 30 minutes of engine operation at the rated speed.Air Conditioner Belt
The V-belt must be tensioned correctly. Failure to tension the belt properly could cause damage to the belt and/or to the air conditioner compressor.
Illustration 2 g00821832
(1) Pulley bolt. (2) Adjustment bolt. (3)
Check the belt tension.Note: To check the belt tension, apply 110 N (25 lb) of force midway between the pulleys. Correctly adjusted belts will deflect 13 to 19 mm (1/2 to 3/4 inch).
If the deflection is not correct, loosen pulley bolt (1) .
Turn adjusting bolt (2) in order to adjust the belt tension.
When the adjustment is correct, tighten bolt (1) to a torque of 38 7 N m (28 5 lb ft) and tighten bolt (2) to a torque of 15 3 N m (11 2.2 lb ft).
Check the deflection again.Note: If a new belt is installed, check the belt adjustment again after 30 minutes of engine operation at the rated speed.