Yamaha Rhino 450 YXR45FAV, Service Manual

Page: 198 / 413

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ENG
CRANKSHAFT AND OIL PUMP
REMOVING THE CRANKSHAFT
1. Remove:
• crankshaft seals
1
NOTE:
Mark a note of the position of each crankshaft
seal so that they can be installed in the correct
place and in the correct direction.
2. Remove:
• crankshaft
Use a crankcase separating tool
1
.
Crankcase separating tool
P/N. YU-01135-B, 90890-01135
CHECKING THE OIL PUMP
1. Check:
• oil pump driven gear
• oil pump housing
• rotor cover
Cracks/wear/damage
→
Replace.
2. Measure:
• inner-rotor-to-outer-rotor-tip clearance
a
• outer-rotor-to-oil-pump-housing clearance
b
• oil-pump-housing-to-inner-rotor-and-outer-
rotor clearance
c
Out of specification
→
Replace the oil
pump.
Inner-rotor-to-outer-rotor-tip
clearance
less than 0.15 mm (0.0059 in)
<Limit>: 0.23 mm (0.0091 in)
Outer-rotor-to-oil-pump-housing
clearance
0.010 ~ 0.034 mm
(0.0004 ~ 0.0013 in)
<Limit>: 0.104 mm (0.0041 in)
Oil-pump-housing-to-inner-rotor-
and-outer-rotor clearance
0.04 ~ 0.09 mm
(0.0016 ~ 0.0035 in)
<Limit>: 0.16 mm (0.0063 in)