Subaru LEGACY 2006 Manual page 3989

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C: DISASSEMBLY
1) Using a coil spring compressor, compress the
coil spring.
2) Using the ST, remove the self-locking nut.
ST 20399AG000 STRUT MOUNT SOCKET
ST
3) Remove the strut mount, spacer and upper
spring seat from strut.
4) Gradually decrease the compression force of
compressor, and remove the coil spring.
5) Remove the dust cover and helper spring.
D: ASSEMBLY
1) Before installing the coil spring, strut mount, etc.
on strut, check for the presence of air in the damp-
ening force generating mechanism of the strut
since air prevents proper dampening force produc-
tion.
2) Checking for 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 fin-
gers, move the rod up and down.
(4) If the piston rod moves more than 10 mm
(0.39 in) in the former step, purge air from the
strut.
3) Air purging procedure
(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.
Front Strut
(4) Fully retract the piston rod.
(5) Repeat 3 or 4 times from the step (1).
NOTE:
After purging air from the strut, be sure to place the
strut with the piston rod facing up. If the strut is laid
down for any reason, check for the entry of air in ac-
cordance with "Checking for presence of air"
4) Using a coil spring compressor, compress the
coil spring.
NOTE:
Make sure that the vertical install direction of the
coil spring is as shown in the figure.
FS-00040
(1) Diameter is small (Upper part)
(2) Identification paint
FS-00041
(3) Diameter is large (Bottom part)
5) Set the coil spring correctly so that its end face
seats well in the spring seat as shown in the figure.
(1) Coil spring end face
6) Install the helper and dust cover to the piston
rod.
FS-21
FRONT SUSPENSION
(1)
(2)
(3)
FS-00042
(1)
FS-00043