Front Steering Knuckle: Service and Repair

FRONT HUB / KNUCKLE

COMPONENTS:

REMOVAL
1. Raise the vehicle and remove the wheel& tire assembly.
Tightening torque Nm (kgf-m, lb-ft): 90 - 110 (9 - 11, 65 - 80)
2. Remove the caliper assembly (A) from knuckle (B) and suspend it with wire.





3. Remove the split pin (A), castle nut (B) and washer from the front hub assembly (C).





4. Remove the wheel speed sensor (A) from the knuckle (B).





5. Disconnect the tie rod end ball joint (A) from the knuckle using a special tool (09568 - 4A000).





6. Remove the ball joint assembly mounting bolt (A) from the knuckle.





7. Remove the strut assembly mounting bolts (A).





8. Remove the hub and knuckle as an assembly.

CAUTION: Be careful not to damage the boot and tone wheel.

DISASSEMBLY
1. After removing the fixed screws(A) mounting the brake disc(C), remove the brake disc(C) from the hub(B).





2. Remove the snap ring(A).





3. Install the special tools (09517-29000.9517-21500) as shown in illustration below.





4. Separate the hub from the knuckle by turning nut(A) of the special tool (09517-21500).
5. Using a plastic hammer, remove the dust cover from the knuckle.
6. Remove the bearing inner race(B) from the hub(A) using the special tool (09495-33000).





7. Using the special tools (09495-33100.9517-29000), remove the wheel bearing outer race(A) from the knuckle(B).





INSPECTION

Wheel Bearing Check
1. Raise the vehicle until the front tires are off the floor. Make sure the wheels are in a straight forward position.

NOTE: Make sure the wheel rotates freely and that the brake pads are retraced sufficiently to allow free movement of the tire and wheel assembly.

Spin the tire by hand to check the wheel bearings for roughness.





2. Grip each front tire at the top and bottom and move the wheel inward and outward while lifting the weight of the tire off the front wheel bearings.





3. If the tire and wheel (hub) is loose on the spindle, does not rotate freely, or has a rough feeling when spun, carry out one of the following.

On vehicles with inner and outer bearings, inspect the bearings and races for wear or damage. Adjust or install new bearing and races as necessary

4. Check the hub for cracks and the splines for wear.
5. Check the brake disc for scoring and damage.
6. Check the knuckle for cracks.
7. Check the bearing for cracks or damage.

REASSEMBLY
1. Apply multi-purpose grease to the contacting surface of the knuckle hub and bearing thinly.
2. Using the Special Tool (09532-11500), press-in the bearing to the knuckle.
a. Install the snap ring.

NOTE:
^ Press-in the outer race of the wheel bearing to prevent damage to the bearing assembly.
^ When installing a bearing assembly, always use a new one.
^ The right and the left bearings must be replaced as a matched set.





3. Using a plastic hammer, install the dust cover.
4. Press-in the hub to the knuckle.
Press fit load: 20 - 25 KN (2000 - 2500 kgs)

NOTE: Press-in the inner race of the wheel bearing to prevent damage to the bearing assembly.

5. Tighten the hub and the knuckle to the specified torque using the Special Tool (09517-21500).





6. Measure the hub bearing starting torque,





7. If the starting torque 0 Nm (0 kg-cm, 0 lb-ft), measure the hub bearing axial play.





8. If the hub axial play exceeds the limit while the nut is tightened to 200 - 260 Nm (20 - 26 kgs-m, 145 - 188 lb-ft), the bearing, hub and knuckle are not installed correctly. Repeat the disassembly and assembly procedure.
Hub bearing axial play [Limit] 0.008 mm (0.0003 in) or less
9. Remove the Special Tool.
10. Fix the brake disc with the mounting screws.

INSTALLATION
1. Installation is the reverse of removal.

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