Figure 3-3.-Articulated steering assembly.
Figure 3-4.-Front-and-rear steering.
angling of the wheels and the rear wheels do not go
behind the bucket on turns and keeps the front tires
outside the path of the front ones, but trail inside.
tracking in the rear while backing away from banks and
Rear-wheel steering swings the rear wheels outside
dump trucks. In new equipment, this design has been
of the front-wheel tracks. The principal advantage is
replaced by articulation.
greater effectiveness in handling off-center loads at
In four-wheel steering, the front wheels are turned
either the front or rear and preventing path down a
one way and the rear wheels are turned to the same angle
sideslope. This type of steering is used with front-end
in the opposite direction. The trailing wheel always
loaders, as it keeps the weight of the machine squarely
moves in the same track as the leading wheel whether