Subaru 2009 IMPREZA, Service Manual

Page: 2349 / 3619

DS-21
Rear Axle
DRIVE SHAFT SYSTEM
B: INSTALLATION
1) Temporarily tighten the rear housing to the up-
per arm.
2) Aligning with the mounting hole of the rear brake
back plate, temporarily tighten the rear hub unit
bearing to the rear housing.
CAUTION:
• Be careful not to damage the magnetic en-
coder.
• Do not get closer the tool which charged
magnetism to magnetic encoder.
3) Attach the rear drive shaft to the rear hub unit
bearing.
4) Tighten the new axle nut temporarily.
CAUTION:
Use new axle nuts.
5) Attach the links to the rear housing and tighten
them to the specified torque.
Tightening torque:
Upper arm
80 N·m (8.2 kgf-m, 59 ft-lb)
Front lateral link
60 N·m (6.1 kgf-m, 44.3 ft-lb)
Rear lateral link
120 N·m (12.2 kgf-m, 88.5 ft-lb)
Trailing link
90 N·m (9.2 kgf-m, 66.4 ft-lb)
6) Tighten the four bolts of the rear housing.
Tightening torque:
65 N·m (6.6 kgf-m, 47.9 ft-lb)
7) Install the rear disc rotor. (Disc brake model)
8) Install the brake drum. (Drum brake model)
9) Install the rear disc brake caliper on the rear
housing. (Disc brake model)
Tightening torque:
66 N·m (6.7 kgf-m, 48.7 ft-lb)
10) Install the brake hose bracket and rear ABS
wheel speed sensor.
Tightening torque:
Brake hose bracket
33 N·m (3.4 kgf-m, 24.3 ft-lb)
Rear ABS wheel speed sensor
7.5 N·m (0.76 kgf-m, 5.5 ft-lb)
11) While pressing the brake pedal, tighten the new
axle nuts to the specified torque.
Tightening torque:
190 N·m (19.4 kgf-m, 140.1 ft-lb)
CAUTION:
• Do not install wheel and let it touch the
ground before tightening the axle nut. Failure to
follow this rule may damage the axle bearing.
• Do not overtighten the nuts as this may dam-
age the axle bearing.
12) After tightening the axle nut, lock it securely.
13) Install the rear wheels.
Tightening torque:
100 N·m (10.2 kgf-m, 73.8 ft-lb)
14) Connect the ground cable to battery.
15) Inspect the wheel alignment and adjust if nec-
essary.
(1) Magnetic encoder
(2) Rear hub unit bearing
DS-00251
(2)
(1)
DS-00360
DS-00414
DS-00048