Subaru 2009 IMPREZA Service Manual page 1120

MECHANICAL
13) Remove the union screw without filter (without
protrusion) which secures the oil pipe to the front
camshaft cap.
(B)
(C)
(A)
(A) Union screw with filter (with protrusion)
(B) Union screw without filter (without protrusion)
(C) Oil pipe
14) Loosen the upper side of the front camshaft
cap and the intake camshaft cap bolts equally, a lit-
tle at a time in alphabetical sequence shown in the
figure.
(A)
(E)
(F)
(B)
15) Loosen the lower side of the front camshaft cap
and the exhaust camshaft cap bolts equally, a little
at a time in alphabetical sequence shown in the fig-
ure.
(A)
(E)
(F)
(B)
16) Remove the front camshaft cap.
17) Remove the intake camshaft caps and intake
camshaft.
18) Remove the exhaust camshaft caps and ex-
haust camshaft.
NOTE:
Arrange camshaft caps in order so that they can be
installed in their original positions.
Camshaft
ME-03555
(C)
(D)
ME-00771
(C)
(D)
ME-00772
ME(H4DOTC)-62
19) Remove the oil seal.
CAUTION:
Do not scratch the journal surface when remov-
ing the oil seal.
20) Similarly, remove the camshaft RH and related
parts.
B: INSTALLATION
1) Install the camshaft.
Apply engine oil to the cylinder head at camshaft
bearing installation location before installing the
camshaft. Install the camshaft so that each valve is
close to or in contact with base circle of the cam
lobe.
NOTE:
• Set the camshaft to the position shown in the fig-
ure.
• When set at the position shown in the figure, it is
not necessary to rotate the camshaft RH when in-
stalling the timing belt, but it is necessary to rotate
the camshaft LH slightly.
Intake camshaft LH:
Rotate 80° clockwise.
Exhaust camshaft LH:
Rotate 45° counterclockwise.
77.5
(a)
(b)
A Cylinder head LH
B Cylinder head RH
(a) Intake camshaft
(b) Exhaust camshaft
A
(b)
11
B
77.5
(a)
11
ME-00111