Front wheel hub - section
The front wheel hub is a fairly complex forging (conceptually corresponding to a similar unit in the Skoda Felicia and Favorit cars). The front wheel hub contains a double-row radial thrust ball bearing, into which a driver with an internal splined cylindrical surface for the splined end of the drive shaft is inserted. The drive shaft is secured in the driver with a self-locking nut and washer. The nut has an external twelve-sided socket head cap, M20x1.5 thread, tightening 290 Nm±10% (see Fig. View B – Assembly scan of steering knuckle assembly, steering rod, propeller shaft and lower rocker arm mount).
The lower ball joint has a conical-cylindrical pin seating surface.
A brake disc with internal air cooling is screwed to the leash. There are five holes in the brake disc (corresponding to the threaded holes in the leash) for fastening a car wheel.
On the front wheel hub there are also bosses designed for attaching the brake caliper, as well as holes for the bolts for attaching the brake disc casing.
On the rear side there are also oriented control levers, into the eyes of which the ball joints of the control rods are inserted and secured with nuts.
In the upper part of the front wheel hub there is an eye with a cut groove, in which after insertion the lower part of the telescopic shock absorber of the elastic unit is fixed with a horizontal tightening bolt. The shock absorber bracket is also put on this bolt in the section axis (see Fig. View E – Mounting the front spring assembly to the front wheel hub assembly). In the back (at the top) the elastic unit is screwed with a lock nut to the fastening plate (see Fig. View F – Fastening the front spring assembly to the body). The axis of the eye, and therefore the telescopic shock absorber, deviates from the axis of the leash by 98°3'±15".