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3.2 SERVICING
3.2.1 Rotor Lobe Clearance
1. Measure the clearance between lobes of the inner ro-
tor and the outer rotor with a feeler gauge.
2. Measure the clearance between the outer rotor and
the pump body with a feeler gauge.
3. If the clearance exceeds the factory specifications,
replace the oil pump rotor assembly.
Inner/Outer
Rotor Clearance
Factory
Specification
0.03 to 0.14 mm
0.0012 to 0. 0055 in.
Allowable
Limit
0.2 mm
0.008 in.
Outer Rotor/
Pump Body
Clearance
Factory
Specification
0.11 to 0.19 mm
0.0044 to 0. 0074 in.
Allowable
Limit
0.25 mm
0.0098 in.
3.2.2 Rotor to Cover Clearance
1. Put a strip of plastigage onto the rotor face with
grease.
2. Install the cover and tighten the bolts.
3. Remove the cover carefully, and read the plastigage.
4. If the clearance exceeds the factory specifications,
replace the oil pump rotor assembly.
Rotor/Cover
Clearance
Factory
Specification
0.105 to 0. 150 mm
0.00414 to 0. 00590 in.
Allowable
Limit
0.20 mm
0.008 in.