Subaru 2009 IMPREZA, Service Manual

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RS-13
Upper Arm
REAR SUSPENSION
5. Upper Arm
A: REMOVAL
1) Remove the rear sub frame. <Ref. to RS-17, RE-
MOVAL, Rear Sub Frame.>
2) Remove the rear ABS wheel speed sensor
bracket.
3) Remove the bolts, then remove the upper arm.
B: INSTALLATION
CAUTION:
• Be sure to use a new self-locking nut.
• Always tighten the bushing when the arm is
positioned in the state where the vehicle is at
curb weight and the wheels are in full contact
with the ground.
1) Install in the reverse order of removal.
2) Inspect the wheel alignment and adjust if neces-
sary.
Tightening torque:
Upper arm — Rear sub frame
150 N·m (15.3 kgf-m, 110.6 ft-lb)
Upper arm — Rear housing
80 N·m (8.2 kgf-m, 59 ft-lb)
Rear ABS wheel speed sensor bracket
7.5 N·m (0.76 kgf-m, 5.5 ft-lb)
C: INSPECTION
1) Visually check the upper arm for damage and
deformation.
2) Visually check the bushing for abnormal cracks,
fatigue or damage.
RS-00257
RS-00258