Subaru 2002 IMPREZA Service Manual page 93

3. WHEEL ARCH HEIGHT
1) Unload 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 the following components and re-
place deformed parts.
• Suspension components [Front strut assembly
and rear shock absorber assembly]
• Body parts to which suspensions are installed.
4) When no components are deformed, adjust the
wheel arch height by replacing coil spring in the
suspension which wheel arch height is out of stan-
dard. <Ref. to FS-8, Wheel Alignment.> <Ref. to
RS-9, Wheel Alignment.>
4. WHEEL ALIGNMENT OF FRONT SUS-
PENSION
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 the following compo-
nents 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.
SUSPENSION
5. WHEEL ALIGNMENT OF REAR SUS-
PENSION
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 deformation is observed, replace the damaged
parts.
• Suspension components [Shock absorber, link
F, link R, link UPR, arm R, sub frame, etc.]
• Body parts to which suspensions are installed.
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 the front strut and rear shock ab-
sorber for oil leakage as instructed. Replace front
strut and rear shock absorber if oil leaks excessive-
ly.
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 the self-lock nuts and bolts are re-
moved, replace them with new ones.
Front suspension: <Ref. to FS-2, General Descrip-
tion.>
Rear suspension: <Ref. to RS-2, General Descrip-
tion.>
PM-37
PERIODIC MAINTENANCE SERVICES