Subaru Legacy 2003 Service Manual page 259

MECHANICAL
1) Installation of valve spring and valve
(1) Place cylinder head on ST.
ST 498267800 CYLINDER HEAD TABLE
(2) Coat the stem of each valve with engine oil
and insert valve into valve guide.
NOTE:
When inserting the valve into valve guide, use spe-
cial care not to damage the oil seal lip.
(3) Install the valve spring and retainer.
NOTE:
Be sure to install the valve springs with their close-
coiled end facing the seat on the cylinder head.
(4) Set the ST on valve spring.
ST 499718000 VALVE SPRING REMOVER
ST
(5) Compress the valve spring, and then fit the
valve spring retainer key.
(A) Retainer
(B) Painted face
(6) After installing, tap the valve spring retainers
lightly with plastic hammer for better seating.
CYLINDER HEAD ASSEMBLY
ME-00280
( B )
( A )
( B )
ME-00282
ME(H4SO)-62
E: INSPECTION
1. VALVE SPRING
1) Check the valve springs for damage, free length,
and tension. Replace the valve spring if it is not to
the specifications presented below.
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 54.30 mm (2.1378 in)
Squareness 2.5°, 2.4 mm (0.094 in)
215 — 246 N
(21.9 — 25.1 kgf, 48.2 — 55.3 lb)/
45.0 mm (1.772 in)
Tension/spring height
527 — 582 N
(53.7 — 59.3 kgf, 118.1 — 130.8
lb)/34.7 mm (1.366 in)
2. INTAKE AND EXHAUST VALVE OIL
SEAL
Replace the oil seal with new one, if lip is damaged
or spring out of place, or when the surfaces of valve
and valve seat are reconditioned or valve guide is
replaced. Use pliers to pinch and remove oil seal
from valve.
1) Place the cylinder head on ST1.
2) Press-fit oil seal as shown in the figure using
ST2.
NOTE:
• Apply engine oil to oil seal before press-fitting.
• When press-fitting oil seal, do not use hammer or
strike in.
• Differentiate between intake valve oil seal and
exhaust valve oil seal by noting their difference in
color.
ST1 498267800 CYLINDER HEAD TABLE
ST2 498857100 VALVE OIL SEAL GUIDE
Color of rubber part:
Intake [Black]
Exhaust [Brown]
ME-00283