Disassembly and Assembly

OIL PUMP


Disassembly and Assembly


DISASSEMBLY
1. Remove oil pump cover.
2. Remove inner rotor and outer rotor from oil pump body.
3. Remove the regulator plug, regulator spring and regulator valve.

INSPECTION AFTER DISASSEMBLY

Clearance of Oil Pump Parts





- Measure radial clearance using a suitable tool.










- Measure side clearance using suitable tools.










- Calculate the clearance between inner rotor and oil pump body as follows.
1. Measure the outer diameter of protruded portion of inner rotor
(position 5) using suitable tool.





2. Measure the inner diameter of oil pump body to brazed portion
(position 6) using suitable tool.
3. Calculate the clearance using the following formula.
- (Clearance) = (Inner diameter of oil pump body) - (Outer diameter of inner rotor)






Regulator Valve Clearance
Check regulator valve to oil pump cover clearance using the following formula.





- (Clearance) = D1 (Valve hole diameter) - D2 (Outer Diameter of valve)






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

ASSEMBLY





Installation is in the reverse order of removal.

NOTE:
Install the inner rotor and outer rotor with the punched marks on the oil pump cover side.