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Home >> GMC >> 1995 >> Forward Control 4.3 Z, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation - 5.7L. >> Emission Systems >> Air Injection SYS - ("C" & "K" W/ 5.7L M/T & CALIF Emissions) >> Air Pump

Air Pump

The air pump is a belt-driven, positive displacement vane-type pump. A centrifugal filter mounted behind the pulley purges air drawn into pump of dirt and contaminants. The air pump is permanently lubricated and requires no periodic service.

CAUTION: To prevent liquid from entering air pump, always cover centrifugal filter fan before cleaning engine. DO NOT oil air pump.
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