.
:-····
Disassemble the cylinder head (page 10-14).
Chill new valve guides
in
a freezer for about 1 hour.
NOTE:
•
Be
sure
to
wear heavy gloves to avoid burns when
handling the heated cylinder head.
• Using a torch
to
heat the cylinder head may cause
warpage.
Drive new guides
[1]
from the camshaft side while
the cylinder head
is
still heated.
Heat the cylinder head
to
130 - 140°C with a hot plate
or oven.
Do
not heat the cylinder head beyond 150°C.
Use temperature indicator sticks, available from
welding supply stores,
to
be
sure the cylinder head
is
heated to the proper temperature.
Support the cylinder head
and
drive the valve guides
out of the cylinder head from the combustion chamber
side.
TOOL:
[2]
Valve guide driver, 5.0
mm
07942-MAGOOOO
Take out new valve guides
[1]
from the freezer.
Drive new valve guides into the cylinder head
to
the
specified height from the cylinder head.
TOOL:
[2] Valve guide adjusting driver 07743-0020000
(Not available
in
U.S.A.)
VALVE GUIDE PROJECTION:
IN/EX: 11.05 - 11.35
mm
(0.435 - 0.447 in)
Let the cylinder head cool to
room
temperature.
Ream new valve guides after installation.
NOTE:
• Take care not
to
tilt or lean the reamer [1]
in
the
guide while reaming.
• Use cutting
oil
on
the reamer during this operation.
Insert the reamer from the combustion chamber side of
the cylinder head
and
always rotate the reamer
clockwise.
TOOL:
[1] Valve guide reamer, 5.0
mm
07984-MA60001 or
07984-MA6000D
(U.S.A. only)
Clean the cylinder head thoroughly
to
remove any
metal particles after reaming
and
reface the valve seat
(page 10-18) .
CYLINDER HEADNALVES
[2]
1
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