5.1
ENGINE
BODY
92.4mm
STROKE
SERIES
WSM,
01092
__
-
I
0087F059
t087F056
0
26rad
79rad
15'
5'
(30')
3087FO57
Exhaust
0.26
rad.
15"
.'
,
.
...
.
.
_.
.
,.
C
0087F058
-
IUl
Correctina Valve and Valve Seat
NOTE
0
Before correcting the valve and seat, check the
valve stem and the
I.D.
of
the valve guide section,
and repair them
if
necessary.
After correcting the valve seat, be sure to check
the valve recessing.
1)
Correcting Valve
1.
Correct the valve
with
a valve refacer.
2)
Correcting Valve Seat
1.
Slightly correct the seat surface
with
a 60" (Int.ake
valve) or
45" (Exhaust valve) seat cutter
(1)
(Code
2.
Resurface the seat surface
with
30"
valve seat
cutter to intake valve seat and
with
15" valve seat
cutter
to
exhaust valve seat
so
that the width
is
close to specified valve seat
width.
(2.12
mm
0.0835
in.)
3.
After resurfacing the seat, inspect for even valve
seating, apply
a
thin
film of compund between the
valve face and the valve seat, and
fit
them
with
valve lapping tool.
4.
Check valve sealing
with
Prussian blue, the valve
seating surface should show good contact
all
the
way around.
NO:
07909-33102).
[A]
Check Contact
[B]
Correct Seat Width
[C]
Check Contact
(a) Identical Dimensions
(b)
Valve Seat Width
(When removing)
1. Using a valve guide replacing tool, press out the
(When installing)
1.
Clean a new valve guide, and apply engine oil
to
it.
2.
Using a valve guide replacing tool, press
in
a
new
valve guide
until
it
is
flush
with
the cylinder head
as
shown
in
the figure.
3.
Ream precisely the
I.D.
of
the valve guide
to
the
specified dimension. (See page S-16)
NOTE
0
Be
careful not to strike valve guide
with
a
(1)
Spacer
(2)
Valve Guide
used valve guide.
hammer, etc. during replacement.
5-77
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