Oil Pump; Checking The Oil Pump; Checking The Relief Valve; Checking The Oil Strainer - Yamaha STAR XVS95CE 2DX1 2014 Service Manual

EAS24960

CHECKING THE OIL PUMP

1. Check:
• Oil pump housing
Cracks/damage/wear → Replace the oil
pump assembly.
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
assembly.
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
0.09–0.19 mm (0.0035–0.0075 in)
Limit
0.26 mm (0.0102 in)
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 oil pump assembly.
EAS24970

CHECKING THE RELIEF VALVE

1. Check:
• Relief valve body "1"
• Relief valve "2"
• Spring "3"
• Spring retainer "4"
Damage/wear → Replace the relief valve as-
sembly.
1
EAS24990

CHECKING THE OIL STRAINER

1. Check:
• Oil strainer "1"
Damage → Replace.
Contaminants → Clean with solvent.
EAS25000

ASSEMBLING THE OIL PUMP

1. Lubricate:
• Inner rotor
• Outer rotor
(with the recommended lubricant)
Recommended lubricant
Engine oil
2. Install:
• Pin "1"
• Oil pump inner rotor "2"
• Oil pump outer rotor "3"
• Dowel pin
• Oil pump housing "4"
5-73

OIL PUMP

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