Power Steering Pump: Inspection
- Inspect sliding surfaces of pump body, cover, side plate and pump shaft for wear and/or damage. If any problems are found, replace pump assembly. Inspect cam ring for wear, scratches or other damage. If any problems are found, replace pump assembly.
- Inspect rotor and vanes for wear and/or damage. Using a thickness gauge, check rotor-to-vane clearance. Clearance should be .0004-.0023" (.01-.06 mm). If any problems are found, replace pump assembly.
- Inspect relief valve fluid passages for obstruction. Inspect relief valve connector fitting orifice for obstruction. Measure relief valve spring free length. Free length should be 1.32-1.43" (33.5-36.5 mm). Free length should be .87-.75" (19.0-22.0 mm) for Esteem (1998).If any problems are found, replace pump assembly.