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15. Troubleshooting
Trouble Problem Remedy
Quill returns too slowly or too
quickly
Spring has improper tension. Adjust spring tension. See “Adjusting
the spindle retaining spring”.
Chuck wiII not stay attached
to spindle. It wiII falls o when
trying to install.
Dirt, grease or oil on the tapered sur-
face of the spindle or of the chuck.
Use household detergent to clean the
surfaces of spindle and chuck. See
“Installing the chuck”.
Noisy operation Incorrect belt tension Adjust belt tension. See “Choosing
speed and tensioning belt”.
Dry spindle. Test spindle.
Loose spindle pulley. Check tightness of retaining nut on
pulley and tighten, if necessary.
Loose motor pulley. Tighten set screw in motor pulley.
Wood splinters on underside
of the drill.
No suitable material beneath work-
piece.
Use suitable material. See “Position-
ing table and workpiece”.
Workpiece torn loose from
hand.
Workpiece not supported or clamped
properly.
Support workpiece or clamp it.
Drill bit burns. Incorrect speed. Change speed. See “Choosing speed
and tensioning belt”.
Chips not coming out of hole. Retract drill bit frequently to remove
chips.
Dull drill bit. Resharpen drill bit.
Feed too slow. Increase feed rate.
Drill leads o or hole is not
round.
Hard grain in wood or lengths of cut-
ting lips and/or angle not equal.
Resharpen drill bit.
Bent drill bit. Replace drill bit.
Drill bit binds in workpiece. Work piece pinching drill bit or exces-
sive feed pressure.
Support workpiece or clamp it. See
“Positioning table and workpiece”.
Improper belt tension. Adjust belt tension. See “Choosing
speed and tensioning belt”.
Excessive drill bit run-out or
wobble.
Bent drill bit Use a straight drill bit.
Worn spindle bearings. Replace bearings.
Drill bit not clamped centrally in
chuck.
Check the centring of the drill. See
“Installing drill bits”.
Chuck not properly installed. Install chuck properly. See “Installing
the chuck”.
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