Subaru 2003 LEGACY Service Manual page 17

MECHANICAL
5. VALVE SPRINGS
1) Check the valve springs for damage, free length,
and tension. Replace the valve spring if it is not
within specifications presented in the table.
2) To measure the squareness of valve spring,
stand the spring on a surface plate and measure its
deflection at the top using a try square.
Free length 44.67 mm (1.7587 in)
206 — 236 N
(21.0 — 24.1 kgf, 46.2 — 53.1 lb)
/36.0 mm (1.417 in)
Tension/spring
height
485 — 537 N
(49.5 — 54.8 kgf, 109.2 — 120.6 lb)
/26.6 mm (1.047 in)
Squareness 2.5°, 2.0 mm (0.079 in)
6. INTAKE AND EXHAUST VALVE OIL
SEAL
Replace the oil seal with a new one, if the lip is
damaged or spring out of place, or when the surfac-
es of intake valve and valve seat are reconditioned
or intake valve guide is replaced.
1) Place the cylinder head on ST1.
2) Press in the oil seal as shown in the figure by us-
ing 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]
CYLINDER HEAD ASSEMBLY
Valve spring
ME-00132
ME(H4DOSTC)-68
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)
3) Measure the inner diameter of valve lifter mating
part on cylinder head.
Inner diameter:
34.994 — 35.016 mm (1.3777 — 1.3786 in)
NOTE:
If difference between outer diameter of valve lifter
and inner diameter of valve lifter mating part is over
the limit, replace the cylinder head.
ME-00133
ME-00134
ME-00135