OIL PUMP INSPECTION [MZR-CD 2.2]

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Rotor Clearance

1.  Measure the following clearances.

(1)  Measure the tip clearance between the inner rotor and the outer rotor using a feeler gauge.

•  If it exceeds the maximum specification, replace the inner rotor or the outer rotor, or the both.

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Standard tooth tip clearance between inner rotor and outer rotor

0.04—0.18 mm {0.002—0.007 in}

Maximum tooth tip clearance between inner rotor and outer rotor

0.22 mm {0.0087 in}

(2)  Measure the body clearance between the outer rotor and the oil pump body using a feeler gauge.

•  If it exceeds the maximum specification, replace the outer rotor or oil pump body, or both.

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Standard body clearance between outer rotor and oil pump body

0.10—0.19 mm {0.0040—0.0074 in}

Maximum body clearance between outer rotor and oil pump body

0.25 mm {0.0098 in}

(3)  Measure the side clearance using a straight edge and a feeler gauge.

•  If it exceeds the maximum specification, replace the inner rotor or oil pump body, or the both.

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Oil pump standard side clearance

0.04—0.10 mm {0.002—0.003 in}

Oil pump maximum side clearance

0.15 mm {0.0059 in}