Power Steering Pump: Inspection

Check all parts for wear or damage and replace as necessary. Check oil clearance between bushing and rotor shaft. Maximum clearance is .0028" (.07 mm). Check that bearings operate smoothly.
If necessary, press out old bearing and press in new bearing. Measure difference between cam ring and rotor. Maximum difference should be .0024" (.06 mm).
Dimensions of the vane plate should be .589 x .307 x .067" (14.97 x 7.80 x 1.70 mm). Maximum clearance between vane plate and rotor groove is .0024" (.06 mm).
Check flow control valve for leakage with compressed air. Control valve spring should be 1.85-1.97" (47-50 mm) long.

Fig 1: Exploded View of Toyota Power Steering Pump Assemblies