Yamaha TT-R90E, Owner'S Service Manual

Page: 246 / 340

4 - 38
ENG
OIL PUMP
INSPECTION
Oil pump
1. Measure:
●
Tip clearance
a
(between the inner rotor 1 and the
outer rotor 2 )
●
Side clearance
b
(between the outer rotor 2 and the
rotor housing 3 )
Out of specification
→
Replace the oil
pump assembly.
●
Rotor housing and rotor clearance
c
(between the rotor 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>: 0.2 mm (0.0079 in)
Side clearance
b
:
0.13 ~ 0.18 mm
(0.0051 ~ 0.0071 in)
<Limit>: 0.23 mm (0.0091 in)
Rotor housing and rotor clear-
ance
c
:
0.06 ~ 0.10 mm
(0.0024 ~ 0.0039 in)
<Limit>: 0.15 mm (0.006 in)
Rotary filter and oil strainer
1. Inspect:
●
Rotary filter
1
●
Oil strainer
2
Damage
→
Replace.
3 Upper side
4 Lower side
ASSEMBLY AND INSTALLATION
Rotary filter
1. Install:
●
Rotary filter 1
NOTE:
When installing the rotary filter, align the match
mark
a
on the rotary filter with the hole
b
of
the crankshaft.