Subaru Impreza 2002 Service Manual page 960

(4) Install the oil pump on cylinder block. Be
careful not to damage the oil seal during instal-
lation.
Tightening torque:
6.4 N·m (0.65 kgf-m, 4.7 ft-lb)
CAUTION:
• Do not forget to the install the O-ring and seal
when installing oil pump.
• Align flat surface of oil pump's inner rotor
with crankshaft before installation.
24) Install the water pump and gasket.
Tightening torque:
First; 12 N·m (1.2 kgf-m, 8.7 ft-lb)
Second; 12 N·m (1.2 kgf-m, 8.7 ft-lb)
CAUTION:
• Be sure to use a new gasket.
• When installing the water pump, tighten the
bolts in two stages in alphabetical sequence as
shown in the figure.
25) Install the water by-pass pipe for heater.
CYLINDER BLOCK
26) Install the oil filter using ST.
ST 498547000
S2M0118B
27) Tighten the cylinder head bolts.
(1) Apply a coat of engine oil to the washers and
bolt threads.
(2) Tighten all bolts to 29 N·m (3.0 kgf-m, 22 ft-
lb) in alphabetical sequence.
Then tighten all bolts to 69 N·m (7.0 kgf-m, 51 ft-
lb) in alphabetical sequence.
(3) Back off all bolts by 180° first; back them off
by 180° again.
(4) Tighten the bolts (a) and (b) to 34 N·m (3.5
kgf-m, 25 ft-lb).
(5) Tighten the bolts (c), (d), (e) and (f) to 15
N·m (1.5 kgf-m, 11 ft-lb).
(6) Tighten all bolts by 80 to 90° in alphabetical
sequence.
CAUTION:
Do not tighten bolts more than 90° ° ° ° .
(7) Further tighten all bolts by 80 to 90° in al-
phabetical sequence.
CAUTION:
Ensure that the total "re-tightening angle" [in
the former two steps], do not exceed 180° ° ° ° .
H2M1568B
28) Install the oil level gauge guide, and then tight-
en the attaching bolt (left side only).
29) Install the rocker cover.
30) Install the crankshaft sprocket. <Ref. to ME-56,
INSTALLATION, Crankshaft Sprocket.>
31) Install the camshaft sprocket. <Ref. to ME-54,
INSTALLATION, Camshaft Sprocket.>
ME-83
MECHANICAL
OIL FILTER WRENCH
B2M2611A
B2M2628B