Front Ball Joint - Subaru LEGACY 2004 Service Manual

5. Front Ball Joint

A: REMOVAL
1) Lift-up the vehicle and remove the front wheels.
2) Remove the both sides of stabilizer bracket.
3) Pull out the pin from ball stud, remove the castle
nut, and extract the ball stud from front arm.
4) Remove the bolt installing ball joint to housing.
5) Extract the ball joint from housing.
B: INSTALLATION
1) Insert the ball joint into housing.
Tightening torque (Bolt):
⋅
50 N m (5.1 kgf-m, 36.9 ft-lb)
CAUTION:
Do not apply grease to the tapered portion of
ball stud.
2) Install the ball joint into front arm.
Tightening torque (Castle nut)
Front arm:
⋅
39 N m (4.0 kgf-m, 28.8 ft-lb)
3) Retighten the castle nut further within 60° until
the hole in ball stud is aligned with a slot in castle
nut. Then, insert a new cotter pin and bend it
around castle nut.
4) Install the stabilizer bracket.
Front Ball Joint
NOTE:
Stabilizer bracket has an orientation, so install it
with the arrow mark faced to the front side of vehi-
cle.
FS-00114
Tightening torque:
25 N
5) Install the front wheels.
C: INSPECTION
1) Measure the play of ball joint by the following
procedures. Replace with a new one when the play
exceeds specified value.
(1) With 686 N (70 kgf, 154 lb) loaded in direc-
tion shown in the figure, measure the dimension
2
FS-00115
(2) With 686 N (70 kgf, 154 lb) loaded in direc-
tion shown in the figure, measure the dimension
2
(3) Determine the plays from the following for-
mula. S = 2
FS-17
(1) Front side of vehicle
⋅
m (2.5 kgf-m, 18.1 ft-lb)
.
1
.
2
– 2
2 1
FRONT SUSPENSION
(1)
FS-00116
FS-00035
FS-00036