Subaru Legacy 2004 Service Manual page 292

MECHANICAL
(6) Check the valve guide protrusion.
Valve guide protrusion L:
Intake
20.0 — 21.0 mm (0.787 — 0.827 in)
Exhaust
16.5 — 17.5 mm (0.650 — 0.689 in)
L
(A)
(A) Valve guide
(7) Ream the inside of valve guide using ST.
Put the reamer in valve guide, and rotate the
reamer slowly clockwise while pushing it lightly.
Bring the reamer back while rotating it clock-
wise. After reaming, clean the valve guide to re-
move chips.
CAUTION:
• Apply engine oil to the reamer when reaming.
• If the inner surface of the valve guide is torn,
the edge of the reamer should be slightly
ground with an oil stone.
• If the inner surface of the valve guide be-
comes lustrous and the reamer does not chip,
use a new reamer or remedy the reamer.
ST 499767400 VALVE GUIDE REAMER
(8) Recheck the contact condition between
valve and valve seat after replacing the valve
guide.
Cylinder Head
4. INTAKE AND EXHAUST VALVE
1) Inspect the flange and stem of valve, and re-
place if damaged, worn or deformed, or if "H" ex-
ceed the standard value.
H:
Intake
Exhaust
Valve overall length:
Intake
Exhaust
ME-00293
2) Put a small amount of grinding compound on the
seat surface and lap the valve and seat surface.
<Ref. to ME(H4SO 2.0)-60, VALVE SEAT, AD-
JUSTMENT, Cylinder Head.> Install a new intake
valve oil seal after lapping.
ME-00294
ME(H4SO 2.0)-62
Standard: 0.8 — 1.2 mm (0.03 — 0.047 in)
Standard: 1.0 — 1.4 mm (0.039 — 0.055 in)
120.6 mm (4.75 in)
121.7 mm (4.79 in)
ME-00295