Checking The Oil Pump - Yamaha YFM700RV 2009 Service Manual

OIL PUMP
EBS00317

CHECKING THE OIL PUMP

1. Check:
• oil pump driven gear 1
• oil pump housing 1 2
• oil pump housing cover 3
• oil pump housing 2 4
Cracks/damage/wear → Replace.
2. Measure:
• inner-rotor-to-outer-rotor-tip clearance a
• outer-rotor-to-oil-pump-housing
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
Less than 0.12 mm (0.0047 in)
<Limit>: 0.20 mm (0.0079 in)
Outer-rotor-to-oil-pump-housing
clearance
0.09 ~ 0.15 mm
(0.0035 ~ 0.0059 in)
<Limit>: 0.22 mm (0.0087 in)
3. Check:
• oil pump operation
Rough movement → Repeat steps (1) and
(2) or replace the defective parts.
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ENG
clearance