(1) Refer to the applicable technical manual,
and start the air compressor. Open the main air supply
valve at the compressor to supply air pressure to the
rock drill. All air-only functions, tramming, drill hammer,
drill rotation, drill feed and blow can now be operated.
(2) To operate the hydraulic functions, feed tilt,
boom lift, feed swing, boom swing, and feed extension,
move the hydraulic pump shut-off valve (fig. 2-1) to the
(on) horizontal position.
Stop the rock drill as illustrated in figure 2-
Figure 2-3. Stopping the rock drill.