Minnich A-1C, Operators & Service Manual

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A-1C A-2C Set-Up Procedure
1. Lubricator – Make sure that the lubricator is full. See recommended lubricants below.
2. Air Supply – Use a 3/4” hose to supply air to the drill unit.
3. Install the drill steel and bit into the drill.
4. Make sure that the air compressor is on.
5. Position the drill where the first hole is to be drilled and set the brake.
6. Remove the rail locking pin and using the lift valve, lower the rail to the horizontal drilling position.
7. If the rail is not parallel to the surface of the slab, loosen the four bolts in the cylinder end adjuster and turn the
cylinder shaft one way or the other until the rail is parallel with the slab. Re-tighten the four bolts.
8. Make sure the rub strip is against the slab.
9. Using the height adjusting screw, adjust the height to the required distance from the top of the slab to the center of
the hole.
10. Hole Depth – Remove the slider lock pin using the feed lever. Feed the drill bit tight against the slab. Measure from
the end of the drill stop rod to the stop pad and adjust the depth accordingly.
11. Make sure that the regulator is set between 18-22 PSIG.
12. Using the drill control valve, drill the hole until the stop rod is against the stop pad. Measure the actual hole depth
and adjust the stop rod accordingly.
13. You are now ready to start drilling.
Recommended Lubricants
Manufacturer Name Product Name
AGIP RD100
BP HL150
BP HLP150
CASTROL RD OIL 100
ESSO AROX EP-46
MOBIL ALMO 527
SHELL TORCULA OIL 100
TEXACO ROCK DRILL 100