Checking The Oil Pump - Yamaha T135SE Service Manual

1
2
YamahaT135.COM
Yamaha T135 Service Manual
3
4
4-46
OIL PUMP
EAS00364

CHECKING THE OIL PUMP

1. Check:
9oil pump driven gear 1
9oil pump housing 2
9outer rotor
9inner rotor
Cracks/damage/wear → Replace the defec-
tive part(s).
2. Measure:
9inner-rotor-to-outer-rotor-tip clearance a
9outer-rotor-to-oil-pump-housing
b
9oil-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 (0.0059 in)
<Limit>: 0.20 mm (0.0079 in)
Outer-rotor-to-oil-pump-housing
clearance
0.06 – 0.11 mm
(0.0024 – 0.0043 in)
<Limit>: 0.15 mm (0.0059 in)
Oil-pump-housing-to-inner-rotor-
and-outer-rotor clearance
0.06 – 0.11 mm
(0.0024 – 0.0043 in)
<Limit>: 0.15 mm (0.0059 in)
3. Check:
9oil pump operation
Rough movement → Repeat steps (1) and
(2) or replace the defective part(s).
ENG
clearance