Case 845B VHP Operator's Manual page 100

Scarifing
To scarify a surface it is advised to use all the teeth with
less penetration than to use less teeth with deeper pene-
tration. It is advantageous to break the surface material
into smaller bits.
When the scarifier is used in crowded areas, pay attention
to the shallow sewers, galleries, and other utilities.
Use the lowest speed (1st or 2nd gear) with high engine
speed to maintain better control of the grader and to pro-
vide good breaking of surface material.
The scarifier teeth must be in good condition for best re-
sults. Never back drag the scarifier teeth. This can seriou-
sly damage the tool bar.
1. REAR SCARIFIER
When operating a grader and a sharp non articulated turn
is to be made, reduce speed and lean the front wheels in
the direction of the turn. After completing the turn, strai-
ghten the front wheels to the normal position and resume
normal speed.
When roading a grader from one location to another, carry
the moldboard within the wheel width and raised as high
as possible to prevent accidents.
4-10
CHAPTER 4 – OPERATING INSTRUCTIONS
1
2
2. FRONT SCARIFIER
When driving or operating the grader in traffic always set
the hand throttle at low idle. Select the gear range desi-
red, then use the accelerator / decelerator pedal to chan-
ge the machine's road speed.
The disengagement device must be in off position so that
the engine runs as a retarder.
Be sure that the engine speed control system is func-
tioning properly, so that the engine speed returns to idle
when the operator takes his foot from the accelerator /
decelerator pedal.
When roading the grader, obey all traffic regulations and
be aware of other traffic.
Be prepared for any emergency.
If the grader is used in congested areas or roads, put ade-
quate warning signs to prevent accidents. Always be awa-
re of other traffic, especially before change of direction or
working across traffic flow.