Checking The Oil Pump; Assembling The Oil Pump - Yamaha XVS250 2001 Service Manual

OIL PUMP

CHECKING THE OIL PUMP

1. Check:
D oil pump drive gear 1
D oil pump driven gear 2
D oil pump housing
D oil pump housing cover
Cracks/damage/wear  Replace the de-
fective part(-s).
2. Measure:
D inner-rotor-to-outer-rotor-tip clearance a
D outer-rotor-to-oil-pump-housing
b
D oil-pump-housing-to-inner-rotor-and-outer-
rotor clearance c
Out of specification  Replace the oil pump.
1 Inner rotor
2 Outer rotor
3 Oil pump housing
Inner-rotor-to-outer-rotor-tip
clearance
0.15 mm
<Limit>: 0.2 mm
Outer-rotor-to-oil-pump-housing
clearance
0.03
<Limit>: 0.15 mm
Oil-pump-housing-to-inner-rotor-
and-outer-rotor clearance
0.03
<Limit>: 0.15 mm
3. Check:
D oil pump operation
Unsmooth  Repeat steps (1) and (2) or re-
place the defective part(-s).
EAS00375

ASSEMBLING THE OIL PUMP

1. Lubricate:
D inner rotor
D outer rotor
D oil pump shaft
(with the recommended lubricant)
Recommended lubricant
Engine oil
5-52
ENG
clearance
0.09 mm
0.09 mm