**********************************
**********************************
NOTE:
_
After replacing the valve guide reface the
valve seat.
Replacement steps:
NOTE:
_
To ease guide removal, installation and
to
maintain correct
fit
heat the cylinder head
in
an
oven
to
100°C.
• Remove the valve guide using a valve
guide remover
<:D
.
• Install the new valve guide using a valve
guide remover
<:D
and valve guide
installer
®.
• After installing the valve guide, bore the
valve guide using a valve guide reamer
®
to
obtain proper stem-to-guide clearance.
Valve guide remover
& installer
(7.0
mm
(0.28 in)):
Remover YM-01225-A,
Reamer
YM
..
0127,
Installer
YM
..
04017,
90890-04018
302-013
VALVESANDVALVESPRINGS I
ENG
I'\-I
2.Replace:
• Valve guide
3.lnspect:
• Valve face
Pitting/wear
-?
Grind the face.
• Valve stem end
Mushroom shape
or
diameter larger than
the body
of
the stem
-?
Replace.
OIJ___.
@-11--
4.Measure:
• Margin thickness
®
Out
of
specification
-?
Replace.
Margin thickness:
Intake:
1.0
..
1.4
mm
(0.039
....
0.055 in)
<Limit>: 0.8
mm
(0.031
in)
Exhaust:
1.0
....
1.4
mm
(0.039 .. 0.055 in)
<Limit>: 0.8
mm
(0.031
in)
4-
23
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