Cartridge-style vane pump

摘要

A cartridge-style pump 10­ for a vehicle power steering system can be assembled, tested and shipped independently of an associated pump housing 37­. The pump 10­ includes an upper plate 12­, a cam plate 16­ having a bore 20­ formed therein for receipt of a rotor 18­, and a lower plate 14­. A plurality of alignment pins 22­ are pressed into the lower plate 14­ with the cam plate 16­ and the upper plate 12­ placed onto the alignment pins 22­ to locate the plates in their proper position. A plurality of retaining clips 32­ are placed onto a respective alignment pin 22­ to hold the pump 10­ together.