(2) Position the rock drill in the maximum
stability position for tramming or towing illustrated in
Since there are several variations in the
manner which the tramming controls can
be used, it Is recommended that the
operator familiarize himself with their
feel before attempting to negotiate the
rock drill in confined quarters.
Positioning Boom and Feed. After rock drill
has been trammed to the desired location, refer to figure
2-1 and position the boom as follows: (1) Place the
hydraulic shut-off valve in the horizontal position to
activate the hydraulic pump.
(2) Maneuver the boom controls to obtain the
desired altitude of the boom and feed.
Preparing to Drill. Prepare the drill for
operation as illustrated in figure 2-7.
(1) Spot the drill bit at the desired location of the
(2) Perform the drilling operation as illustrated in
The type and density of the material to
be drilled will determine the setting of the
blow and feed controls. Advance blow
controls only to the point where the air is
cleaning the hole of all loose material.
Apply steady pressure to the drill bit with
feed controls. When feed pressure is
too great, the drill will attempt to stall out.
Adding Steel. Refer to figure 2-9 for
addition of multiple steel lengths if required.