Delta 11-985 Instruction Manual

Contents

Delta 11-985 Instruction Manual Manual pdf 13 page image

13Fig. 32Fig. 33Fig. 34Fig. 35DRILLING HOLES TO DEPTHWhere a number of holes are to be drilled to exactly thesame depth, a depth stop is provided in the pinion shafthousing and is used as follows:1. Loosen lock screw (A) Fig. 32, and rotate housing (B)until the pointer (C) lines up with the desired depthindicated on scale (D). Then tighten lock screw (A).2. All holes will then be drilled to the exact depth asindicated on scale (D) Fig. 32. NOTE: Scale (D) iscalibrated in both inches and millimeters.ADJUSTING SPINDLERETURN SPRINGFor the purpose of automatically returning the spindleupward after a hole has been drilled, a spindle returnspring is provided in the spring housing (A) Fig. 33. Thisspring has been properly adjusted at the factory andshould not be disturbed unless absolutely necessary. Toadjust the return spring, proceed as follows:1. Disconnect the drill press from the power source.2. Loosen the two nuts (B) Fig. 33, approximately 1/4".Do not remove nuts (B) from shaft (C).3. While firmly holding spring housing (A) Fig. 34, pull outhousing and rotate it until the boss (D) is engaged withthe next notch on the housing. Turn the housing counter-clockwise to increase and clockwise to decrease springtension. Then tighten the two nuts (B) to hold thehousing in place. IMPORTANT: Nut (B) should notcontact spring housing (A) when tight.OPERATIONThe following directions will give the inexperiencedoperator a start on common drill press operations. Usescrap material for practice to get a feel of the machinebefore attempting regular work.WARNING: The use of accessories and attach-ments not recommended by Delta may result in riskof injury.IMPORTANT: When the workpiece is long enough itshould always be positioned on the table with one endagainst the column, as shown in Fig. 35. This preventsthe workpiece from rotating with the drill bit or cuttingtool, causing damage to the workpiece or personalinjury to the operator. If it is not possible to support theworkpiece against the column, the workpiece shouldalways be fastened to the table using clamps or a vise.C ABDBCADAB

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