Nissan and Datsun Workshop Service and Repair Manuals

7. Remove oil seal from oil pump housing.

^

Be careful not to scratch oil pump housing.

INSPECTION

Oil pump cover, rotor, vanes, control piston, side seals, cam ring and friction ring

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Check for wear or damage.

Side clearances

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Measure side clearances between end of oil pump housing and cam ring, rotor, vanes and control piston in at least four places along their
circumferences. Maximum measured values should be within specified position.

^

Before measuring side clearance, check that friction rings, O-ring, control piston side seals and cam ring spring are removed.

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If not within standard clearance, replace oil pump assembly except oil pump cover assembly.

Seal ring clearance

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Measure clearance between seal ring and ring groove.
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Standard clearance:

0.10-0.25 mm (0.0039 - 0.0098 in)

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Wear limit:

0.25 mm (0.0098 in)