Service manual

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ENG
ENGINE OIL PUMP
EAS00363
CHECKING THE OIL PUMP
1. Check:
• oil pump housing 1
• oil pump housing covers 2
Cracks/damage/wear → Replace the
defective part(s).
2. Measure:
• inner rotor-to-outer rotor tip clearance a
• outer rotor-to-oil pump housing clear-
ance b
Out of specification → Replace the oil
pump.
1 Inner rotor
2 Outer rotor
3 Oil pump housing
Inner rotor-to-outer rotor tip
clearance
0 ~ 0.12 mm (0 ~ 0.005 in)
Outer rotor-to-oil pump housing
clearance (feed pump)
0.03 ~ 0.08 mm (0.001 ~ 0.003 in)
Outer rotor-to-oil pump housing
clearance (scavenging pump)
0.06 ~ 0.11 mm (0.001 ~ 0.004 in)
3. Check:
• oil pump operation
Rough movement → Repeat steps (1)
and (2) or replace the defective part(s).
EAS00365
CHECKING THE RELIEF VALVE
1. Check:
• relief valve body 1
• relief valve 2
• spring 3
Damage/wear → Replace the defective
part(s).
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