Checking The Oil Pump; Checking The Relief Valve - Yamaha 2007 XP500 Service Manual

EAS24960

CHECKING THE OIL PUMP

1. Check:
Oil pump drive gear "1"
G
Oil pump housing "2"
G
Oil pump cover "3"
G
Cracks/damage/wear → Replace the defec-
tive part(s).
2. Measure:
Inner-rotor-to-outer-rotor-tip clearance "a"
G
Outer-rotor-to-oil-pump-housing
G
"b"
Oil-pump-housing-to-inner-rotor-and-out-
G
er-rotor clearance "c"
Out of specification → Replace the oil pump.
1. Inner rotor
2. Outer rotor
3. Oil pump housing
3. Check:
Oil pump operation
G
Rough movement → Repeat steps (1) and
clearance
(2) or replace the defective part(s).
EAS24970

CHECKING THE RELIEF VALVE

1. Check:
Relief valve body "1"
G
Relief valve "2"
G
Spring "3"
G
O-ring "4"
G
Damage/wear → Replace the defective
part(s).
5-41
OIL PUMP
Inner-rotor-to-outer-rotor-tip
clearance
0.040–0.120 mm (0.0016–0.0047
in)
Limit
0.20 mm (0.0079 in)
Outer-rotor-to-oil-pump-housing
clearance
0.045–0.085 mm (0.0018–0.0033
in)
Limit
0.155 mm (0.0061 in)
Oil-pump-housing-to-in-
ner-and-outer-rotor clearance
0.11–0.23 mm (0.0043–0.0091 in)
Limit
0.30 mm (0.0118 in)