Oil Pump; Removing The Oil Pan; Checking The Sprocket And Chain; Checking The Oil Pump - Yamaha MTN1000 2016 Service Manual

EAS30333

REMOVING THE OIL PAN

1. Remove:
• Oil pan "1"
• Gasket
• Dowel pins
TIP
Loosen each bolt 1/4 of a turn at a time, in stag-
es and in a crisscross pattern. After all of the
bolts are fully loosened, remove them.
1
EAS30336

CHECKING THE SPROCKET AND CHAIN

1. Check:
• Oil pump drive sprocket "1"
Cracks/damage/wear  Replace.
2. Check:
• Oil pump drive chain "1"
Damage/stiffness  Replace the oil pump
drive chain and oil pump drive sprocket as a
set.
EAS30337

CHECKING THE OIL PUMP

1. Check:
• Oil pump driven sprocket "1"
• Oil pump housing "2"
2. Measure:
• Inner-rotor-to-outer-rotor-tip clearance "a"
• Outer-rotor-to-oil-pump-housing
1
3. Check:
• Oil pump operation
5-47
Cracks/damage/wear  Replace.
Cracks/damage/wear  Replace.
"b"
Out of specification  Replace the defective
part(s).
Inner-rotor-to-outer-rotor-tip
clearance
0.000–0.120 mm (0.0000–0.0047
in)
Limit
0.14 mm (0.0055 in)
Outer-rotor-to-oil-pump-housing
clearance
0.09–0.15 mm (0.0035–0.0059 in)
Limit
0.22 mm (0.0087 in)
1. Inner rotor
2. Outer rotor
Rough movement  Repeat steps (1) and
(2) or replace the defective part(s).

OIL PUMP

2
1
clearance