•
Regarding the valve seat assembling, shrink the valve seat by putting it in the dry ices for
about 1 hour or so, and then press it into the cylinder head by means of a special tool.
•
After coating the grinding powder paste on valve head contacting face of valve seat, and
after executing a sufficient lapping operation with the rotating and grinding motion of valve,
wipe off the grinding agent thoroughly.
d) Valve spring
•
Inspect the outlook of valve spring
and if necessary replace it.
•
By means of spring tester,
measure the tension and free
length.
•
Measure the perpendicularity of
valve spring.
•
In case that the measured value
exceeds the limit value, replace it.
<Perpendicularity regular>
e) Assembling Cylinder head
•
Clean the cylinder head thoroughly.
•
Coat the valve stems and valve guides with engine oil and assemble the valves.
•
Replace the valve stem seals with new ones and insert the stem seals to the valve
guides of cylinder head with a special tool. (Be careful for the valve stem seals not to be
damaged)
•
Install the valve spring washer to valve guide.
•
After putting on the inside, outside spring, install the valve spring seat on them.
NOTE : Install the valve spring seat with “TOP” (painted in yellow) side up.
- 80 -
EFM2039I
1.0mm or less
Free length
Inside
Free length
65.5 mm
Spring
When given a regular load
46.3 mm
(15 ~ 17 kg)
Outside
Free length
64 mm
Spring
When given a regular load
46.3 mm
(37 ~ 41 kg)
