Safety and operating instructions - Crowder Hydraulic Tools

ALF 72D, ALF 72D-1, ALF 67/80D, BMK 62Swww.CrowderSupply.com • Toll Free: 888-883-5144Safety and operating instructionsCrowder Supply Co., Inc. • 8495 Roslyn St., Commerce City, CO 80022 • Toll Free: 888-883-5144 • www.CrowderSupply.comAttaching the pusher leg tothe rock drillThe pusher leg must be fixed to the rock drill by meansof the bayonet coupling.ControlsControls for ALF 72D, ALF 72D-1 and ALF67/80DPusher Leg Feed control knob (1)Adjust the feed force by means of the feed controlknob as follows:Turn the knob counter-clockwise (B) to increasethe feed force.Turn the knob clockwise (A) to decrease the feedforce.When the feed control knob is in the closedposition, the pusher leg is vented.Valve pin (2)When the valve pin is pushed in, the feed forceceases abruptly, thus overriding the setting onthe feed control knob. The facility is used, e.g. toadjust the height of the rock drill, when rigging upthe pusher leg, or when there is a tendency to jam.When the valve pin is depressed, the piston rod inthe pusher leg is retracted automatically.Controls for BMK 62SPusher Leg Feed control knob (1)Adjust the feed force by means of the feed controlknob as follows:Turn the knob counter-clockwise (B) to increasethe feed force.Turn the knob clockwise (A) to decrease the feedforce.When the feed control knob is in the closedposition, the pusher leg is vented.Valve pin (2)When the valve pin is pushed in, the feed forceceases abruptly, thus overriding the setting onthe feed control knob. The facility is used, e.g. toadjust the height of the rock drill, when rigging upthe pusher leg, or when there is a tendency to jam.© 2006 Atlas Copco Construction Tools AB | No. 9800 0680 71 | 2006-11-2013