Subaru IMPREZA 2002 Service Manual page 26

FRONT STRUT
I
FRONT SUSPENSION
D: ASSEMBLY
1) Before installing the coil spring, strut mount, etc.,
on the strut, check for the presence of air in the
dampening force generating mechanism of the
strut since air prevents proper dampening force
from being produced.
2) Checking for the presence of air:
(1) Place the strut vertically with the piston rod
facing up.
(2) Move the piston rod to the center of its entire
stroke.
(3) While holding the piston rod end with finger-
tips, move the rod up and down.
(4) If the piston rod moves at least 10 mm (0.39
in) in the former step, purge air from the strut.
(1) Place the strut vertically with the piston rod
facing up.
(2) Fully extend the piston rod.
(3) With the piston rod fully extended, place the
--
-piston rod side down. The strut must stand ver-
tically.
(4) Fully contract the piston rod.
(5) Repeat 3 or 4 times from the first step.
3) Air purging procedure:
NOTE:
After completely purging air from the strut, be sure
to place the strut with the piston rod facing up. If it
is laid down, check for entry of air in the strut as
outlined under "Checking for the presence of air".
4) Using a coil spring compressor, compress the
coil spring.
NOTE:
Make sure that the vertical installing direction of coil
spring is as shown in the figure.
( 2
I
B4M0568B
I
(1)
Fiat (top side)
(2) identification paint
(3) inclined (bottom side)
5) Set the coil spring correctly so that its end face
fits well into the spring seat as shown.
I
S4M0353A
6) Install the helper and dust cover to the piston
rod.
7) Pull the piston rod fully upward, and install the
rubber seat and spring seat.
NOTE:
Ensure the upper spring seat is positioned as
shown in the figure.
S4M0097B
4
( 1 )
(1) Outside of body
8) Install the strut mount to the piston rod, and tight-
en the self-locking nut temporarily.
CAUTION:
Be sure to use a new self-locking nut.
9) Using a hexagon wrench to prevent strut rod
from turning, tighten self-locking nut with ST.
ST 927760000 STRUT MOUNT SOCKET
Tightening torque:
55 N.m (5.6 kgf-m, 41 ft-lb)
FS-22