Subaru 1600 Service Manual page 85

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Valve Guide Remover
(899764104)
2 Valve Guide Adjuster
Ii
A5-290
(899768603)
3 Valve Guide Adjuster
(899768602)
4 Cylinder Head Table
(399765101)
Fig.
3·83
Installing valve guide
f. Check the valve guide projection.
Intake
Valve (b)
guide
projection Exhaust
(a)
17.5 - 18.5 mm
(0.689 - 0.728 in)
22.5 - 23.5 mm
(0.886 - 0.925 in)
cv
Ii
nder head
A5-057
Fig.
3-84
Valve guide projection
g. Ream the inside of valve guide with
Valve Guide Reamer (899764105).
Gently rotate the reamer clockwise
while pressing it lightly into valve
guide, and return it also rotating
clockwise. After reaming clean
valve guide to remove chips.
NOTE:
a. The outside diameter of the reamer
should be adjusted to 8.004 to
8.010 mm (0.3151 to 0.3154 in).
b. Apply engine oil to the reamer
when reaming.
c. If the inner surface of the valve
guide is torn, the edge of the
reamer should be slightly ground
with an oil stone.
d. If the inner surface of the valve
guide becomes lustrous and the
reamer does not cut chips, use a
new reamer or remedy the reamer.
ENGINE
h. Recheck the contact condition
between valve and valve seat after
replacing valve guide.
4. Intake Valve Oil Seal
Replace oil seal with new one, if
lip is damaged or spring is out of
place, or when the surfaces of intake
valve and valve seat are reconditioned
or intake valve guide is replaced.
Press in oil seal to the specified
dimension indicated in the figure,
using Oil Seal Installer (898858600).
Oil
Seal Installer
(898858600)
2 Cylinder Head Table
(399765101)
A5-291
Fig.3·85 Installing oil seal
23.2 mm (0.913 inl
A5·292
Fig.
3·86
Installed position of oil seal
NOTE:
Apply oil to the oil seal prior to
pressing.
5. Intake and Exhaust
Valves
I) Inspect the flange and stem of
valve, and replace if damaged, worn,
or deformed, or if "H" is less than
the specified limit.
1.3mm
(0.051 in)
goo
+1
-0
R " 0.3 mm (0.012 in)
A5-293
Fig.
3-87
Valve head dimensions
----------
Intake valve
I
Exhaust valve
Angle of valve surface
90°
+1°
that contacts valve seat
-0
Valve overall length 109 mm (4.29 in)
I
109.3 mm (4.30 in)
2) If the contact surface of valve is
damaged, or if the stem end is recessed,
correct with a valve refacer, grinding
3-48
as little as possible. The contact sur-
face should be at right angle with the
valve axis.