Subaru Legacy 2004 Service Manual page 1175

MECHANICAL
Valve overall length:
Intake (A)
104.4 mm (4.110 in)
Exhaust (B)
104.65 mm (4.1201 in)
2) Put a small amount of grinding compound on the
seat surface, and lap the valve and seat surface.
Install a new intake valve oil seal after lapping.
5. VALVE SPRINGS
1) Check the valve springs for damage, free length,
and tension. Replace the valve spring if it is not
within the standard value presented in the table.
2) To measure the squareness of the valve spring,
stand the spring on a surface plate and measure its
deflection at the top of spring using a try square.
Free length mm (in) 44.67 (1.759)
Set
Tension/spring
height
N (kgf, lb)/mm (in)
Lift
Squareness
Cylinder Head
ME-00758
206 — 236 (21.0 — 24.1,
46.3 — 53.1)/36.0 (1.417)
485 — 537 (21.0 — 24.1, 109
— 121) /26.0 (1.024)
2.5#, 2.0 mm (0.079 in)
ME-00132
ME(H4DOTC)-64
6. INTAKE AND EXHAUST VALVE OIL
SEAL
Replace the oil seal with a new one, if the lip is
damaged or spring is out of place, or when the sur-
faces of intake valve and valve seat are recondi-
tioned or intake valve guide is replaced.
1) Place the cylinder head on ST1.
2) Press-fit the oil seal to the specified dimension
indicated in the figure using ST2.
ST1 498267600 CYLINDER HEAD TABLE
ST2 498857100 VALVE OIL SEAL GUIDE
NOTE:
• Apply engine oil to oil seal before force-fitting.
• Differentiate between the intake valve oil seal
and exhaust valve oil seal by noting their difference
in color.
Color of rubber part:
Intake [Black]
Exhaust [Brown]
Color of spring part:
Intake [Silver]
Exhaust [Silver]
ST2
7. VALVE LIFTER
1) Check the valve lifter visually.
2) Measure the outer diameter of valve lifter.
Outer diameter:
34.959 — 34.975 mm (1.3763 — 1.3770 in)
ME-00133
ME-00134