SKF B34 Quick Start Guide

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Instruction guidelines for B34, B39, B42
Always consult the manufacturers removal and installation instructions for your vehicle. A special set of tools, C-4811 or the
equivalent, is required to remove and install the hub and bearing. If the special tool is not on hand, remove the steering knuckle and
take it to an automotive machine shop for bearing replacement.
Removal:
1. Remove the cotter pin, nut lock and spring from the front halfshaft hub nut. Loosen the hub nut. Loosen the wheel lug nuts slightly.
2. Raise and safely support the vehicle on jackstands.
3. Remove the wheel assembly. Remove the center hub nut.
4. Disconnect the tie rod end from the steering arm. Disconnect the brake hose from the strut retainer. Remove the ball joint clamp nut.
5. Remove the brake caliper, suspend it with wire so that no strain is put on the brake hose. Remove the disc rotor.
6. Separate the knuckle from the control arm ball joint.
7. Pull the knuckle from the halfshaft. Tap the halfshaft with a brass hammer to loosen it if necessary. Use care so that the inner CV
joint does not separate. Support the halfshaft.
8. Using tool C-4811, or equivalent. Back out one of the bearings and install the tool adapter bolt into the retainer threads.
9. Position the tool at the back of the knuckle and install two mounting bolts in the brake caliper mounting holes. Center the tool
and tighten the caliper adapter mounting bolts and the retainer bolt.
10. Tighten the center threaded driver on the tool and push the hub from the knuckle.
11. Remove the tool from the front side of the knuckle. Carefully pry the grease seal from the knuckle. Press the bearing from the
knuckle using tool C-4811.
Installation:
12. Thoroughly clean and lubricate the bearing pocket before installing the new bearing. Install a new bearing by using the puller
adapter of tool C-4811 or equivalent via pressure on the outer race only.
13. Install the hub into the bearing and knuckle assembly, making sure the inner race is supported during assembly. Not supporting
the inner race or hammering in the bearing will put flat spots in the race which will lead to brinelling and premature failure of the
bearing. (Figure 2) Install a new wear/wipe seal. Install the half shaft. Attach the ball joint and tie rod end. Install the brake rotor
and caliper. Secure the brake hose. Tighten the clamp bolt to 70 ft.lbs. Tighten the tie rod end nut to 35 ft.lbs.
14. Install the washer and hub nut. Tighten the nut firmly. Install the wheel assemblies and tighten the lug nuts firmly.
15. Lower the vehicle. Tighten the center hub nut to specifications. Do not run the spindle nut home with an impact. The torque spec
is very important because it sets bearing preload. Tighten the wheel lugs to specifications.
Knuckle
Bearing
Tool
Tool
Figure 1 - Installing the bearing in the knuckle.
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Guía de instrucción para B34, B39, B42
Siempre consulte las instrucciones de remoción e instalación del fabricante para su vehículo. Se requiere un conjunto especial
de herramientas, C-4811 o su equivalente, para quitar e instalar el cubo y el rodamiento. Si la herramienta especial no está a la
mano, quite la articulación de dirección y llévela a un taller de mecánica automotriz para el reemplazo de los rodamientos.
Tool
Tool
Tool
Figure 2- Installing the hub assembly.
Retainer
Hub
Tool
Tool