Figure 11-20. - Typical tandem axle system.

Full-Floating Axles

The full-floating axle is used in most heavy trucks. (See fig. 11-23.) These axle shafts may be removed and replaced without removing the wheels or disturbing the differential. Each wheel is carried on the end of the axle tube on two ball bearings or roller bearings, and the axle shafts are bolted to the wheel hub. The wheels are driven through a flange on the ends of the axle shaft which is bolted to the outside of the wheel hub. The bolted connection between the axle and wheel does not make

Figure 11-22. - Three-quarter floating rear axle.

Figure 11-21. - Semifloating rear axle.

Figure 11-23. - Ful1-floating rear axle.