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ENG
CRANKSHAFT AND OIL PUMP
EBS00336
REMOVING THE CRANKSHAFT
1. Remove:
• crankshaft
1
Use a crankcase separating tool
2
.
Crankcase separating tool
90890-01135
Crankcase separator
YU-01135-B
2
1
EBS00331
CHECKING THE OIL PUMP
1. Check:
• oil pump housing
• oil pump housing 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.
1
Inner rotor
2
Outer rotor
3
Oil pump housing
3. Check:
• oil pump operation
Rough movement
→
Repeat steps (1) and
(2) or replace the defective part(s).
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
0.090 ~ 0.170 mm
(0.0035 ~ 0.0067 in)
<Limit>: 0.24 mm (0.0094 in)
Oil-pump-housing-to-inner-rotor-
and-outer-rotor clearance
0.030 ~ 0.100 mm
(0.0012 ~ 0.0039 in)
<Limit>: 0.17 mm (0.0067 in)
