- Clamp the flange (7) hub in a vice with metal spacers and loosen the nut (1) from the back of the wheel hub with a chisel and hammer.
- Unscrew the nut.
- Press the axle with the hub flange out of the wheel hub or press it out with a puller, as shown in Figure 214. You can also knock out the shaft with a soft metal drift.
Pic. 214. Removing the wheel hub from the axle using a puller with two pins.
- Pull out the inner race of the bearing (2) from a bearing.
- Using a puller, as shown in Figure 194, remove the inner race of the outer bearing (5) from the axis.
- Remove the oil seal from the axle (6)
- Reinsert the bearing inner race (5) into the bearing, place the wheel hub on the press table and press out the bearing. The stop used must be placed against the outer diameter of the bearing. The entire bearing must always be replaced. Clean all parts. Wash the bearing thoroughly in clean gasoline and blow with compressed air without turning the bearing. If there are signs of wear, wear or discoloration, replace the bearing. If there are signs of abrasion on the hub, this means that the inner races of the bearing have been rotated. In this case, replace the hub. Light scratches can be removed with an oiled file.
The wheel hub is assembled as follows:
- Place the hub front side down on a press and press or drive the wheel bearing from the rear side. Place the drift against the outer diameter of the bearing.
- Lubricate the lips of the new oil seal and press it from the outside into the wheel bearing housing.
- Insert both inner races into the bearing and tap lightly.
- Place the hub flange on the press table and slide the wheel bearing housing with the pressed bearing onto the axle. Place the press stop against the inner race of the bearing and press the bearing housing onto the axle.
- Clamp the wheel hub flange in the metal spacers in a vice and screw in and tighten the new nut to a torque of 125 Nm.
- Lock the nut with a hammer and chisel in accordance with Figure 215, driving the protrusion of the nut into the groove of the axle without crushing the material. The chisel should be fairly dull.
Pic. 215. Unlocking the axle nut.