Yamaha FZS1000N, Service Manual

Page: 256 / 394

5-53
OIL PAN AND OIL PUMP
ENG
NOTE:
EAS00362
REMOVING THE OIL PAN
1. Remove:
oil level switch 1
oil pan 2
engine oil drain bolt 3
gasket
dowel pins
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 housing
oil pump housing cover
Cracks / damage / wear
!
Replace the de-
fective part(-s).
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.
1 Inner rotor
2 Outer rotor
3 Oil pump housing
Inner-rotor-to-outer-rotor-tip
clearance
0.09
X
0.15 mm
(0.004
X
0.006 in)
<Limit>: 0.23 mm (0.009 in)
Outer-rotor-to-oil-pump-housing
clearance
0.03
X
0.08 mm
(0.001
X
0.003 in)
<Limit>: 0.15 mm (0.006 in)
Oil-pump-housing-to-inner-rotor-
and-outer-rotor clearance
0.06
X
0.11 mm
(0.002
X
0.004 in)
<Limit>: 0.18 mm (0.007 in)
3. Check:
oil pump operation
Unsmooth
!
Repeat steps (1) and (2) or re-
place the defective part(-s).