Removing The Oil Pan; Checking The Oil Pump - Yamaha VMX12 2001 Service Manual

OIL PAN AND OIL PUMP
EAS00362

REMOVING THE OIL PAN

1. Remove:
• oil level switch 1
• oil pan 2
• gasket
• dowel pins
NOTE:
@
Loosen each bolt 1/4 of a turn at a time, in
stages and in a crisscross pattern. After all of
the bolts are fully loosened, remove them.
@
EAS00364

CHECKING THE OIL PUMP

1. Check:
• oil pump drive gear 1
• oil pump driven gear 2
• oil pump gear housing 3
• oil pump housing cover 1 4
• oil pump housing cover 2 5
Cracks/damage/wear → Replace the defec-
tive part(s).
2. Measure:
• inner-rotor-to-outer-rotor-tip clearance a
• outer-rotor-to-oil-pump-housing clearance 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
Outer-rotor-to-oil-pump-housing
clearance
4 - 56
ENG
0 ~ 0.12 mm
0.03 ~ 0.08 mm