3. ENGINE
3-
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.
OIL PUMP- MEASUREMENT "A″
OIL PUMP COVER- MEASUREMENT "B″
Substract measurement ''B" from measurement "A"
to obtain axial clearance.
NOTE: When the axial clearance of the oil pump
shaft assembly increases, the oil pressure de-
creases.
Oil Pump Installation
For installation, reverse the removal procedure.
Pay attention to the following details.
NOTE: When installing the oil pump rotors, make
sure both markings are on the outer side.
TYPICAL
1. Markings
After reinstallation of the remaining parts, check
for smooth operation of the oil pump assembly.
Oil Pump Final Test
After engine is completely reassembled, start
engine and make sure oil pressure is within
specifications (refer to ENGINE OIL PRESSIRE
in this subsection).
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