Checking The Oilpump - Yamaha T135SE Service Manual

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EAS00364

CHECKING THE OILPUMP

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1. Check:
9 oil pump driven gear 1
9 oil pump housing 2
9 outer rotor
4 9 inner rotor
Cracks/damage/wear → Replace the defec-
tive part(s).
2. Measure:
9 inner-rotor-to-outer-rotor-tip clearance a
9 outer-rotor-to-oil-pump-housing clearance
b
9 oil-pump-housing-to-inner-rotor-and-outer-
rotor clearance c
Out of specification
pump.
1 Inner rotor
2 Outer rotor
3 Oil pump housing
3. Check:
9 oil pump operation
Rough movement → Repeat steps (1) and
(2) or replace the defective part(s).
4-46
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ENG
OILPUMP
→ Replace the oil
Inner-rotor-to-outer-rotor-tip
clearance
0.15 mm (0.0059 in)
<Limit>: 0.20 mm (0.0079 in)
Outer-rotor-to-oil-pump-housing
clearance
0.06 – 0.11 mm
(0.0024 – 0.0043 in)
<Limit>: 0.15 mm (0.0059 in)
Oil-pump-housing-to-inner-rotor-
and-outer-rotor clearance
0.06 – 0.11 mm
(0.0024 – 0.0043 in)
<Limit>: 0.15 mm (0.0059 in)