Subaru Impreza 2002 Service Manual page 199

MECHANICAL
17) Loosen the exhaust camshaft cap bolts equal-
ly, a little at a time in alphabetical sequence shown
in the figure.
(A)
(E)
(F)
(B)
18) Remove the exhaust camshaft cap and cam-
shaft.
CAUTION:
Arrange the camshaft caps in order so that they
can be installed in their original positions.
19) Similarly, remove the right-hand camshafts and
related parts.
CAMSHAFT
(C)
(D)
EN1209
ME(STi)-60
B: INSTALLATION
1) Camshaft installation:
Apply engine oil to cylinder head at camshaft bear-
ing location before installing the camshaft. Install
the camshaft so that each valve is close to or in
contact with "base circle" of cam lobe.
CAUTION:
• When the camshafts are positioned as shown
in the figure, camshafts need to be rotated at a
minimum to align with the timing belt during in-
stallation.
• Right-hand camshaft need not be rotated
when set at position shown in the figure.
Left-hand intake camshaft: Rotate 80° ° ° ° clock-
wise.
Left-hand exhaust camshaft: Rotate 45° ° ° ° coun-
terclockwise.
77.5
(a)
(b)
A Left side cylinder head
B Right side cylinder head
(a) Intake camshaft
(b) Exhaust camshaft
A
(b)
11
B
77.5
(a)
11
EN1214