Hyundai Sonata: Front Hub / Knuckle. Repair procedures - Revised - Front Axle Assembly - Driveshaft and axleHyundai Sonata: Front Hub / Knuckle. Repair procedures - Revised

Replacement

1.
Loosen the wheel nuts slightly.
Raise the vehicle, and make sure it is securely supported.
2.
Remove the front wheel and tire (A) from front hub.

Tightening torque:
88.2 ~ 107.8 N.m (9.0 ~ 11.0 kgf.m, 65.0 ~ 79.5 lb-ft)

Be careful not to damage to the hub bolts when removing the front wheel and tire (A).
3.
Remove the brake caliper mounting bolts, and then place the brake caliper assembly (B) with wire.

Tightening torque:
78.4 ~ 98.0 N.m (8.0 ~ 10.0 kgf.m, 57.8 ~ 72.3 lb-ft)

4.
Remove driveshaft nut (A) from the front hub under applying the brake.

Tightening torque:
215.7 ~ 254.9 N.m (20.0 ~ 26.0 kgf.m, 159.1 ~ 188.0 lb-ft)

-
The washer (B) should be assembled with convex surface outward when installing the castle nut (A) and split pin (C).

5.
Loosen the front brake disc mount screw and then remove the front brake disc (A).

Tightening torque:
4.9 ~ 5.8 N.m (0.5 ~ 0.6 kgf.m, 3.6 ~ 4.3 lb-ft)

6.
Remove the tie rod end ball joint (A) from the knuckle.
(1)
Remove the split pin (C).
(2)
Remove the castle nut (B).

Tightening torque:
34.3 ~ 44.0 N.m (3.5 ~ 4.5 kgf.m, 25.3 ~ 32.5 lb-ft)

7.
Loosen the mount bolt and then remove the wheel speed sensor (B) from knuckle.

Tightening torque:
6.8 ~ 10.7 N.m (0.7 ~ 1.1 kgf.m, 5.0 ~ 7.9 lb-ft)

8.
Remove the lower arm (A) from the knuckle.

Tightening torque:
98.0 ~ 117.6 N.m (10.0 ~ 12.0 kgf.m, 72.3 ~ 86.7 lb-ft)

9.
Disconnect the driveshaft (A) from the front hub assembly..

10.
Loosen the strut mount bolts and then remove the knuckle assembly (A).

Tightening torque:
137.2 ~ 156.9 N.m (14.0 ~ 16.0 kgf.m, 101.2 ~ 115.7 lb-ft)

11.
Install in the reverse order of removal.
12.
Check the alignment. (Refer to SSgroup 'Tires/Wheels - alingment')

Replacement

1.
Loosen the wheel nuts slightly.
Raise the vehicle, and make sure it is securely supported.
2.
Remove the front wheel and tire (A) from front hub.

Tightening torque:
88.2 ~ 107.8 N.m (9.0 ~ 11.0 kgf.m, 65.0 ~ 79.5 lb-ft)

Be careful not to damage to the hub bolts when removing the front wheel and tire (A).
3.
Remove the brake caliper mounting bolts, and then place the brake caliper assembly (B) with wire.

Tightening torque:
78.4 ~ 98.0 N.m (8.0 ~ 10.0 kgf.m, 57.8 ~ 72.3 lb-ft)

4.
Remove driveshaft nut (A) from the front hub under applying the brake.

Tightening torque:
215.7 ~ 254.9 N.m (20.0 ~ 26.0 kgf.m, 159.1 ~ 188.0 lb-ft)

The front hub lock nut should be replaced with new ones.
After installation lock nut, stake the lock nut using a chisel and hammer as shown in the illustration below.

5.
Loosen the front brake disc mount screw and then remove the front brake disc (A).

Tightening torque:
4.9 ~ 5.8 N.m (0.5 ~ 0.6 kgf.m, 3.6 ~ 4.3 lb-ft)

6.
Remove the tie rod end ball joint (A) from the knuckle.
(1)
Remove the split pin (C).
(2)
Remove the castle nut (B).

Tightening torque:
34.3 ~ 44.0 N.m (3.5 ~ 4.5 kgf.m, 25.3 ~ 32.5 lb-ft)

7.
Loosen the mount bolt and then remove the wheel speed sensor (B) from knuckle.

Tightening torque:
6.8 ~ 10.7 N.m (0.7 ~ 1.1 kgf.m, 5.0 ~ 7.9 lb-ft)

8.
Remove the lower arm (A) from the knuckle.

Tightening torque:
98.0 ~ 117.6 N.m (10.0 ~ 12.0 kgf.m, 72.3 ~ 86.7 lb-ft)

9.
Disconnect the driveshaft (A) from the front hub assembly..

10.
Loosen the strut mount bolts and then remove the knuckle assembly (A).

Tightening torque:
137.2 ~ 156.9 N.m (14.0 ~ 16.0 kgf.m, 101.2 ~ 115.7 lb-ft)

11.
Install in the reverse order of removal.
12.
Check the alignment. (Refer to SSgroup 'Tires/Wheels - alingment')

Inspection

1.
Check the hub for cracks and the splines for wear.
2.
Check the brake disc for scoring and damage.
3.
Check the knuckle for cracks
4.
Check the bearing for cracks or damage.

Disassembly

1.
Remove the snap ring (A).

2.
Remove the hub assembly from the knuckle assembly.
(1)
Install the front knuckle assembly (A) on press.
(2)
Lay a suitable adapter (B) upon the hub assembly shaft.

3.
Remove the hub bearing inner race from the hub assembly.
(1)
Install a suitable tool (A) for removing the hub bearing inner race on the hub assembly.
(2)
Lay the hub assembly and tool (A) upon a suitable adapter (B).
(3)
Lay a suitable adapter (C) upon the hub assembly shaft.
(4)
Remove the hub bearing inner race (D) from the hub assembly by using press.

4.
Remove the hub bearing outer race from the knuckle assembly.
(1)
Lay the hub assembly (A) upon a suitable adapter (B).
(2)
Lay a suitable adapter (C) upon the hub bearing outer race.
(3)
Remove the hub bearing outer race from the knuckle assembly by using press.

5.
Replace hub bearing with a new one.

Reassembly

1.
Install the hub bearing to the knuckle assembly.
(1)
Lay the knuckle assembly (A) on press.
(2)
Lay a new hub bearing upon the knuckle assembly (A).
(3)
Lay a suitable adapter (B) upon the hub bearing.
(4)
Install the hub bearing to the knuckle assembly by using press.

-
Do not press against the inner race of the hub bearing because that can cause damage to the bearing assembly.
-
Always use a new wheel bearing assembly.
2.
Install the hub assembly to the knuckle assembly.
(1)
Lay the hub assembly (A) upon a suitable adapter .
(2)
Lay the knuckle assembly (B) upon the hub assembly (A).
(3)
Lay a suitable adapter (C) upon the hub bearing.
(4)
Install the hub assembly (A) to the knuckle assembly (B) by using press.

Do not press against the inner race of the hub bearing because that can cause damage to the bearing assembly.
3.
Install the snap ring (A).


    Front Hub / Knuckle. Components and Components Location - Revised
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