Air Injection Filter: Service and Repair

Fig. 5 Removing centrifugal type pump air filter:

1. To replace filter, Fig. 5, remove drive belt and pump pulley. Pry loose outer disc of filter fan, being careful to prevent fragments from entering the air intake hole.
2. Install the new filter by drawing it on the pulley and pulley bolts, by alternately tightening the bolts. Ensure outer edge of the filter slips into the pump housing. The slight amount of interference with the pump housing bore is normal. Do not attempt to install a filter by hammering or pressing it on.