Subaru XT 1988 Service Manual page 185

ENGINE 2-3
1 VALVE GUIDE REMOVER
(399762103)
2
CYLINDER HEAD TABLE
(498267100)
Fig. 52
A5-289
(3) Turn cylinder head upside down and place VALVE
GUIDE ADJUSTER as shown in the figure.
Valve guide
protrusion: L
Fig. 53
VALVE GUIDE ADJUSTER
(899768603)
c
L2-161
(4) Before installing new valve guide, make sure that
neither scratches nor damages exist on the inside surface
of the valve guide holes in cylinder head.
(5) Put new valve guide, coated with sufficient oil, in
cylinder, and insert VALVE GUIDE REMOVER into
valve guide. Press in until the valve guide upper end is
flush with the upper surface of VALVE GUIDE
ADJUSTER.
CYLINDER
HEAD TABLE'
Fig. 54
VALVE GUIDE REMOVER (399762103)
L2-475
(6) Check the valve guide protrusion.
Valve guide protrusion: L
17.6 - 18.6 mm (0.689 - 0.728 in)
(7) Ream the inside of valve guide with VALVE GUIDE
REAMER (399762104). Gently rotate the reamer clock·
wise while pressing it lightly into valve guide, and return it
also rotating clockwise. After reaming, clean valve guide
to remove chips.
a. Apply engine oil to the reamer when reaming.
b. If the inner surface of the valve guide is torn, the edge of
the reamer should be slightly ground with an oil stone.
c. 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.
(8) Recheck the contact condition between valve and
valve seat after replacing valve guide.
INTAKE AND EXHAUST 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 gu ide is replaced.
Press in oil seal to the specified dimension indicated in the
figure, using
01
L SEAL INSTALLER.
•. Apply engine oil to oilllal before force·fitting.
b. Diffarentiate batween intake valva oil .aal and exhaust
valve oilual by noting thair difference in height.
Fig. 55
29
QILSEAL
INSTALLER
(398862100)
CYLINDER HEAD
TABLE (498267100)
L2·476