Yamaha TT-R125EY Service Manual page 143

OIL PUMP
INSPECTION
Oil pump
1. Inspect:
• Oil pump drive gear
• Oil pump driven gear
• Oil pump housing
• Oil pump cover
Cracks/wear/damage → Replace.
2. Measure:
• Tip clearance A
(between the inner rotor 1 and the outer
rotor 2)
• Side clearance B
(between the outer rotor 2 and the oil
pump housing 3)
Out of specification → Replace the oil
pump assembly.
• Housing and rotor clearance C
(between the pump housing 3 and the
rotors 1 2)
Out of specification → Replace the oil
pump assembly.
Tip clearance A:
0.15 mm (0.0059 in)
<Limit>: 0.20 mm (0.0079 in)
Side clearance B:
0.06 ~ 0.10 mm
(0.0024 ~ 0.0039 in)
<Limit>: 0.15 mm (0.0059 in)
Housing and rotor clearance C:
0.06 ~ 0.10 mm
(0.0024 ~ 0.0039 in)
<Limit>: 0.15 mm (0.0059 in)
Rotary filter
1. Inspect:
• Rotary filter
Cracks/damage → Replace.
4-50
ENG