Power Steering Pump: Disassembly

Drain pump. Remove rear bracket, mount bolts and brackets. Remove reservoir and "O" ring. Remove rear pump body and "O" ring. Remove pump center body and "O" ring. Remove cam ring and pump shaft snap ring. Remove vanes from rotor. See Fig 1 .
Remove rotor from shaft and note rotor position. Remove pump shaft from front of pump. Remove front bracket. Remove shaft oil seal. Clean all parts except seals in chlorinated solvent. Drip dry or use compressed air, DO NOT use a cloth. Check for burring, chipped or scored surfaces on rotor and vanes. Replace assembly if necessary. If vanes have fallen out of rotor, insert vanes with rounded end toward cam.

Fig 1: Exploded View Of Power Steering Pump
Courtesy of FORD MOTOR CO.
Check clearance between vanes and rotor. Clearance should .0004-.0024" (.01-.06 mm). Replace vanes as necessary. Check clearance between bushing and shaft. Clearance should be .001-.004" (.03-.10 mm). Replace shaft or bushing as necessary.