Checking The Oil Strainer; Checking The Oil Pump; Assembling The Oil Pump - Yamaha N MAX GPD150-A 2015 Service Manual

EAS30340

CHECKING THE OIL STRAINER

1. Check:
• Oil strainer
Damage → Replace.
Contaminants → Clean with solvent.
EAS30337

CHECKING THE OIL PUMP

1. Check:
• Oil pump drive gear
• Oil pump driven gear
• Oil pump housing
• Oil pump housing cover
Cracks/damage/wear → Replace the oil
pump.
2. Measure:
• Inner-rotor-to-outer-rotor-tip clearance "a"
• Outer-rotor-to-oil-pump-housing clearance
"b"
Out of specification → Replace the oil pump.
1. Inner rotor
2. Outer rotor
3. Oil pump housing
Inner-rotor-to-outer-rotor-tip
clearance
0.150 mm (0.0059 in)
Limit
0.23 mm (0.0091 in)
Outer-rotor-to-oil-pump-housing
clearance
0.13–0.18 mm (0.0051–0.0071 in)
Limit
0.25 mm (0.0098 in)
3. Check:
• Oil pump operation
Rough movement → Repeat steps (1) and
(2) or replace the oil pump.
EAS30342

ASSEMBLING THE OIL PUMP

1. Lubricate:
• Inner rotor
• Outer rotor
• Oil pump shaft
Recommended lubricant
Engine oil
2. Install:
• Oil pump housing "1"
• Oil pump outer rotor "2"
• Oil pump inner rotor "3"
• Oil pump driven gear "4"
• Pin "5"
• Oil pump housing cover
Oil pump housing cover screw
1.0 Nm (0.10 m·kgf, 0.72 ft·lbf)
TIP
When installing the inner rotor, align the pin in
the oil pump driven gear with the groove "a" in
the inner rotor.
5
a
3. Check:
• Oil pump operation
Refer to "CHECKING THE OIL PUMP" on
page 5-56.
5-56
OIL PUMP
4
3
2
1