Inspection

1. Clean all parts with solvent and blow dry.
2. Inspect rotating components as follows:
a. Vane tips for scoring or wear.
b. Fit of vanes in rotor. Vanes must fit properly in slots without sticking or excessive play.
c. Rotor slots for burrs and excessive wear at thrust faces.
d. Inner surface of pump ring for scoring or wear.
e. Thrust plate and pressure plate for wear on plate surfaces.
f. If heavy wear is present, or parts are faulty, replace entire rotating group.
3. Inspect bearing for rough or looseness and bearing seal for leakage, cracking or swelling.
4. Check driveshaft and bearing bore for excessive burning or scoring.
5. Control valve must move smoothly in the valve bore.