Disassembly and Assembly
Disassembly and AssemblyDISASSEMBLY
1. Remove oil pump cover.
2. Remove inner rotor and outer rotor from front cover.
3. After removing regulator plug, remove regulator spring and regulator valve.
INSPECTION AFTER DISASSEMBLY
Clearance of Oil Pump Parts
Measure clearance with feeler gauge.
Clearance between outer rotor and oil pump body (position 1)
Standard: 0.114 - 0.200 mm (0.0045 - 0.0079 inch)
Tip clearance between inner rotor and outer rotor (position 2)
Standard: Below 0.180 mm (0.0071 inch)
Measure clearance with feeler gauge and straightedge.
Side clearance between inner rotor and oil pump body (position 3)
Standard: 0.030 - 0.070 mm (0.0012 - 0.0028 inch)
Side clearance between outer rotor and oil pump body (position 4)
Standard: 0.030 - 0.090 mm (0.0012 - 0.0035 inch)
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)
2. Measure the inner diameter of oil pump body with inside micrometer (Position 6) (Clearance) = (Inner diameter of oil pump body) - (Outer diameter of inner rotor)
Standard: 0.045 - 0.091 mm (0.0018 - 0.0036 inch)
Regulator Valve Clearance
(Clearance) = D1 (Valve hole diameter) - D2 (Outer diameter of valve)
Standard: 0.040 - 0.097 mm (0.0016 - 0.0038 inch)
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.
Install the inner rotor and outer rotor with the punched marks on the oil pump cover side.