Subaru Impreza 2003, Service Manual

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PM-43
PERIODIC MAINTENANCE SERVICES
SUSPENSION
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-7, Wheel Alignment.>
2) When the caster angle does not conform to ref-
erence, visually inspect the 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.
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-10, Wheel Alignment.>
2) When the camber angle does not conform to ref-
erence, visually inspect parts listed below. If defor-
mation 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
Visually inspect the front strut and rear strut for oil
leakage 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 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.>
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 the damaged parts with new
ones. If minor rust formation, pitting, etc. are noted,
remove the rust and apply remedial anti-corrosion
measures.
• 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.