1. Oil pump bore
2. Outer rotor
3. Oil pump shaft
4. Needle pin
5. Inner rotor
Check inner rotor for corrosion pin holes
or other damages. If so, replace oil pump
shaft assembly.
1. Pittings on the teeth
Using a feeler gauge, measure the
clearance of inner and outer rotors as
shown.
1. Outer rotor
2. Inner rotor
A. 0.25mm (.0098in)
If clearance of inner and outer rotors
exceeds the Tolerance, replace oil pump
rotors. Ensure to also check oil pump
cover. If damaged, replace the
complete oil pump assembly.
If clearance between outer rotor and its
bore in crankcase exceeds the tolerance,
replace the complete oil pump rotors
and/or the crankcase.
Using a depth gauge, measure the axial
clearance of the oil pump as shown.
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