Subaru IMPREZA 2002 Service Manual page 80

SUSPENSION
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PERIODIC MAINTENANCE SERVICES
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3. WHEEL ARCH HEIGHT
1) Unload the cargoes and set the vehicle in curb
weight (empty) condition.
2) Then, check the wheel arch height of front and
rear suspensions to ensure that they are within
specified values.
3) When the wheel arch height is out of standard,
visually inspect following components and replace
deformed parts.
Suspension components [Front strut assembly
and rear strut assembly]
Body parts to which suspensions are installed.
4) When no components are deformed, adjust
wheel arch height by replacing coil spring in the
suspension whose wheel arch height is out of stan-
dard. <Ref. to FS-8, Wheel Alignment.> <Ref. to
RS-9, Wheel Alignment.>
PEN S I 0 N
1) Check the alignment of front suspension to en-
Sure that following items conform to standard val-
ues.
Toe-in
Camber angle
Caster angle
Steering angle
<Ref. to FS-8, Wheel Alignment.>
2) When the caster angle does not conform to stan-
dard value, visually inspect following components
and replace deformed parts.
Suspension components [Strut assembly, cross-
member, transverse link, etc.]
Body parts to which suspensions are installed.
3) When the toe-in and camber are out of standard
value, adjust them so that they conform to respec-
tive service standard.
4) When the right-and-left turning angles of tire are
out of standard, adjust to standard value.
PEN S I 0 N
1) Check the alignment of rear suspension to en-
sure that following items are within standard val-
ues.
Toe-in
Camber angle
Thrust angle
<Ref. to RS-9, Wheel Alignment.>
2) When the camber angle does not conform to
standard value, visually inspect parts listed below.
If the deformation is observed, replace damaged
parts.
Suspension components [Strut assembly, cross-
member, trailing link, lateral links, etc.]
Body parts to which suspensions are installed.
4. WHEEL ALIGNMENT OF FRONT SUS-
5. WHEEL ALIGNMENT OF REAR SUS-
3) When the toe-in and thrust angle are out of stan-
dard value, adjust them so that they conform to re-
spective service standard.
6. OIL LEAKAGE OF STRUT AND SHOCK
ABSORBER
Visually inspect front strut and rear strut for oil leak-
age as instructed. Replace front strut and rear strut
if oil leaks excessively.
7. TIGHTNESS OF BOLTS AND NUTS
Check the bolts and nuts shown in the figure for
looseness. Retighten the bolts and nuts to speci-
fied torque. If self-lock nuts and bolts are removed,
replace them with new ones.
Front suspension: <Ref. to FS-2, General Descrip-
tion.>
Rear suspension: <Ref. to RS-2, General Descrip-
tion.>
8. DAMAGE TO SUSPENSION PARTS
1) Check the following parts and the fastening por-
tion of the vehicle body for deformation or exces-
sive rusting which impairs the suspension. If
necessary, replace damaged parts with new ones.
If minor rust formation, pitting, etc. are noted, re-
move rust and apply remedial anti-corrosion mea-
sures.
Front suspension
Transverse link
Crossmember
Strut
Rear suspension
Crossmember
Lateral links
Trailing link
Strut
In the district where salt is sprayed to melt snow
on a road in winter, check suspension parts for
damage caused by rust every 12 months after
lapse of 60 months. Take rust prevention measure
as required.
PM-32