Inspection

1. Clean all parts thoroughly. Mating surface of the oil pump housing should be smooth. Replace pump cover if scratched or grooved.





2. Lay a straightedge across the pump cover surface. If a 0.076 mm (0.003 inch) feeler gauge can be inserted between cover and straight edge, cover should be replaced.





3. Measure thickness and diameter of outer rotor. If outer rotor thickness measures 9.39 mm (0.3695 inch) or less, or if the diameter is 79.78 mm (3.141 inches) or less, replace outer rotor.





4. If inner rotor measures 9.39 mm (0.3695 inch) or less replace inner rotor.





5. Slide outer rotor into body, press to one side with fingers and measure clearance between rotor and body. If measurement is 0.39 mm (0.015 inch) or more, replace body only if outer rotor is in specifications.





6. Install inner rotor into body. If clearance between inner and outer rotors is 0.20 mm (0.008 inch) or more, replace both rotors.





7. Place a straightedge across the face of the body, between bolt holes. If a feeler gauge of 0.102 mm (0.004 inch) or more can be inserted between rotors and the straightedge, replace pump assembly ONLY if rotors are in specs.