Air Injection Filter: Service and Repair

Fig. 8 Removing Centrifugal Type Pump Air Filter:

Pleated Paper Type
This filter is located on the air pump and should be replaced every 12,000 miles or sooner under more adverse conditions.

Centrifugal Filter Fan Type

CAUTION: Do not attempt to install fan by hammering or pressing it on as damage to pump may result.

This filter should be replaced only if damaged. To remove, first pry off the outer disc, Fig. 8, and then the remaining portion. Install replacement filter by drawing it into place using the pulley and bolts as tools. Alternately tighten the bolts making sure that the outer edge of fan slips into housing. A slight amount of interference with housing bore is normal. After a new fan is installed, it may squeal upon initial operation until its outer diameter lip has worn in. This may take up to 30 miles of operation.