SEAL OIL 0774818 - Caterpillar

Illustration 1 g00107717
Illustration 2 g00107716
To adjust the water pump belt, loosen the mounting bolt (1) for the idler pulley and the bracket bolt (2) for the idler pulley.
Move the idler pulley in order to obtain the correct adjustment. The belt should deflect 13 to 19 mm (0.50 to 0.75 inch) under 110 N (25 lb) of force.
To make the correct adjustment, use the bolt (3) in the center of the idler pulley or use the square hole (4) in the mounting bracket.
Tighten the bracket bolt (2) and tighten the mounting bolt (1) .
If a new belt is installed, check the belt tension again after 30 minutes of engine operation at rated speed.