5.2L Models

Servicing of air pump is limited to replacement of centrifugal fan filter or entire pump. Do not clamp pump in a vise or use a hammer on pump housing.
NOTE: DO NOT lubricate air pump. Wipe all oil off of pump housing. Oil in the pump will cause rapid deterioration and failure of internal pump components.
To replace centrifugal filter, insert needle nose pliers between filter fins and break fan from hub. Install new fan, using pulley and bolts to draw fan down evenly. Do not press or hammer on air pump shaft.

NOTE: Fan might have a slight squeal until sealing lip is worn in. Air injection system is not completely noiseless. Normal noise increases in pitch as engine speed increases.

NOTE: If the engine compartment is to be cleaned with steam or high pressure liquids, fan filter should be masked off to prevent liquid from entering air pump.