Checking The Sprocket And Chain; Checking The Oil Pump; Checking The Relief Valve; Assembling The Oil Pump - Yamaha 2014 MT-07 Service Manual

EAS30336

CHECKING THE SPROCKET AND CHAIN

1. Check:
• Oil pump drive sprocket
Refer to "CHECKING THE CLUTCH HOUS-
ING" on page 5-56.
• Oil pump driven sprocket
Refer to "CHECKING THE OIL PUMP" on
page 5-65.
2. Check:
• Oil pump drive chain
Damage/stiffness → Replace the oil pump
drive chain, oil pump drive sprocket (clutch
housing), and oil pump driven sprocket as a
set.
EAS30337

CHECKING THE OIL PUMP

1. Check:
• Oil pump driven sprocket "1"
• Oil pump housing "2"
Cracks/damage/wear → Replace the defec-
tive part(s).
1
2. Measure:
• Inner-rotor-to-outer-rotor-tip clearance "a"
• Outer-rotor-to-oil-pump-housing clearance
"b"
Inner-rotor-to-outer-rotor-tip
clearance
Less than 0.120 mm (0.0047 in)
Limit
0.20 mm (0.0079 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)
3. Check:
2
EAS30338

CHECKING THE RELIEF VALVE

1. Check:
EAS30342

ASSEMBLING THE OIL PUMP

1. Lubricate:
5-65
1. Inner rotor
2. Outer rotor
• Oil pump operation
Rough movement → Repeat steps (1) and
(2) or replace the defective part(s).
• Relief valve "1"
• Spring "2"
Damage/wear → Replace the oil pump as-
sembly.
1
2
• Inner rotor
• Outer rotor
(with the recommended lubricant)
Recommended lubricant
Engine oil
OIL PUMP