Subaru LEGACY 2006 Manual page 816

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MECHANICAL
3. VALVE GUIDE
1) Check the clearance between valve guide and
stem. The clearance can be checked by measuring
respectively the outer diameter of valve stem with a
micrometer and the inner diameter of valve guide
with a caliper gauge.
Clearance between the valve guide and valve
stem:
Standard:
Intake
0.035 — 0.062 mm (0.0014 — 0.0024 in)
Exhaust
0.040 — 0.067 mm (0.0016 — 0.0026 in)
(A) Valve guide
2) If the clearance between valve guide and stem
exceeds the limit, replace the valve guide or valve
itself whichever shows greater amount of wear.
See the following procedure for valve guide re-
placement.
Valve guide inner diameter:
6.000 — 6.012 mm (0.2362 — 0.2367 in)
Valve stem outer diameters:
Intake
5.950 — 5.965 mm (0.2343 — 0.2348 in)
Exhaust
5.945 — 5.960 mm (0.2341 — 0.2346 in)
(1) Place the cylinder head on ST1 with the
combustion chamber upward so that valve
guides fit the holes in ST1.
Cylinder Head
(2) Insert the ST2 into valve guide and press it
down to remove the valve guide.
ST1 498267800
ST2 499767200
(3) Turn the cylinder head upside down and
place the ST as shown in the figure.
Intake side
ST 499767700
Exhaust side
ST 499767800
(A)
ME-00763
Y
X
(4) Before installing a new valve guide, make
sure that neither scratches nor damages exist
on the inner surface of valve guide holes in cyl-
ME-00289
inder head.
ME(H4SO)-58
CYLINDER HEAD TABLE
VALVE GUIDE REMOVER
ST2
ST1
VALVE GUIDE ADJUSTER
VALVE GUIDE ADJUSTER
ST
(A)
(A) Valve guide
ME-00290
ME-00291