Figure 10-12.-Scarifiers.
to be penetrated by the blade. The scarifier is either
pulled or pushed through the material, depending on the
make and model of the grader and the position of the
scarifier unit on the equipment. Figure 10-12 shows
two types and locations of scarifies on graders.
The teeth, consisting of slender shanks with
replaceable caps, are set in a V-shaped bar (fig. 10-13).
The shanks are wedged or clipped in place and maybe
adjusted for height or removed completely.
A scarifier with all the teeth is used for shallow
penetration and light work. For hard or deeper
penetration, remove every other tooth.
GRADER OPERATIONS
Although the grader is a multipurpose machine that
is capable of doing a variety of jobs, the performance of
the grader depends largely upon the skill of the operator.
The extensive skill required to perform as an effective
grader operator is only gained through practice and
on-the-job experience.
Wheel Lean
The proper use of the front wheels is a great aid in
. .
both steering and grading. In grading, lean the top of
Figure 10-13.-Scarifier teeth.
Figure 10-14.-Proper wheel lean.
10-6
