WASHER 1564081 - Caterpillar

Removal Procedure
Illustration 1 g00932341
Typical example
If necessary, remove the setscrews (6) that fasten the fan guard (3) to the fan shroud. Remove the fan guard (3).
Loosen the nut (1), the clamping screw (4), and the setscrew (7). Slide the alternator (2) toward the engine. Note: If the nut (1) is loose on the setscrew, remove the nut and discard the nut.
Maneuver the V-belts (5) around the fan and remove the V-belts. Note: Never replace one V-belt. Always replace sets of V-belts, if equipped.Installation Procedure
Illustration 2 g00932341
Typical example
Install the V-belts (5) behind the fan and on the correct pulleys.
Adjust the tension on the V-belts (5) by moving the alternator (2) away from the engine. After the correct belt tension is set, tighten the clamping screw (4) to a torque of 78 N m (58 lb ft). Refer to Testing and Adjusting, "V-Belt - Test" for the correct tension of the V-belts. Note: If the V-belt cannot be checked with a gauge, press on the V-belt at the center of the longest free length in order to check the deflection. Under a moderate amount of pressure, the V-belt should have a deflection of 10.0 mm (0.40 inch).
Tighten the setscrew (7) to a torque of 22 N m (16 lb ft).
If necessary, install a new nut (1). Tighten the nut to a torque of 22 N m (16 lb ft).
If the fan guard was previously removed, put the fan guard (3) in position on the fan shroud. Install the setscrews (6) that fasten the fan guard to the fan shroud.