Power Train Systems Operation8
Final Drive
Final Drive
(1) Axle shaft (2) Hub (3) Drive wheel (4) spindle
The power transfer group turns axle shaft (1). The
gear teeth on the end of axle shaft (1) engage the
gear teeth of hub (2). The gear teeth of hub (2) are
on the inside diameter of the hub, which causes the
rotation of the hub to be the same as the axle shafts.
The reduction in size between the axle shaft and the
hub causes the hub to turn at a slower speed.
Spindle (4) is fastened to the truck frame and is used
as a support for hub (2).
Drive wheel (3) is fastened to hub (2) and turns with
the hub.
The final drive is a grease lubricated unit.
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