Inspection

OIL PUMP


Inspection


INSPECTION AFTER DISASSEMBLY

Oil Pump Clearance





- Measure the clearance with feeler gauge (C).
- Clearance between oil pump outer rotor and oil pump body [position (B)]






- Tip clearance between oil pump inner rotor and oil pump outer rotor [position (A)]










- Measure the clearance with feeler gauge and straightedge (A).
- Side clearance between oil pump inner rotor and oil pump body
[position (C)]





- Side clearance between oil pump outer rotor and oil pump body
[position (B)]






- Calculate the clearance between oil pump inner rotor and oil pump body as follows:

OIL PUMP BODY INNER DIAMETER





- Measure the inner diameter of oil pump body with inside micrometer. [position (A)]

OIL PUMP INNER ROTOR OUTER DIAMETER
- Measure the outer diameter of protruded portion of oil pump inner rotor (1) with micrometer. [position (B)]

OIL PUMP INNER ROTOR TO OIL PUMP BODY CLEARANCE
- (Clearance) = (Oil pump body inner diameter) - (Oil pump inner rotor outer diameter)






- If measured/calculated values are out of the standard, replace oil pump assembly.

Regulator Valve Clearance





(Clearance) = (Regulator valve hole diameter) - (Regulator valve outer diameter)











- If the calculated value is out of the standard, replace oil pump assembly.

CAUTION:
- Coat regulator valve with engine oil.
- Check that it falls smoothly into valve hole by its own weight.