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Power Steering Pump: Inspection

  1. Check that groove in rotor is free from excessive wear and that vane slides smoothly. Check that sliding faces of vanes are free from wear. Check that inner face of cam has a trace of uniform contact.
  2. Pump cartridge should be replaced as an entire assembly (if necessary). Check pressure plate and thrust plate sliding surfaces for ridges. Parts may be reused after lapping face.
  3. Check sliding face of valve for burrs or damage. Parts with minor scores may be reused after polishing with emery cloth (No. 800 or finer). Needle bearing face must be free from abrasions and wear.
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