Air Pump
Pump consists of a pulley, housing, rotor subassembly, two vane assemblies, four carbon shoes, two shoe springs, front and rear carbon seals, rear rotor ring, ring bearing and housing cover sub-assembly. Pump is driven by crankshaft pulley by a V-belt. One end of vane is pivoted to a needle bearing case which is supported on the pivot shaft. Opposite end of vane protrudes from an opening in the rotor into air chamber. Space enclosed by rotor, vanes, and housing changes as rotor rotates. Air intake volume increases as rotor rotates. This air is then compressed into the exhaust chamber. A relief valve installed on pump relieves excess air pressure created in pump, preventing damage to system.