Trouble
Probable cause
Remedy
Noisy operation
1.Dry spindle
2.Loose spindle pulley
3.Loose motor pulley
1.Lubricate spindle
2.Check tightness of retaining nut on pulley
3. Tighten set screws in pulleys
Drill bit burns
1. Incorrect speed
2. Chips not coming out of hole
3. Dull drill bit
4. Feeding too slow
5. Drill bit not lubricated
1. Change speed
2.Retract drill bit frequently to clear chips
3.Resharpen drill bit
4.Increase feeding speed
5. Lubricate drill bit
Hole is not round
1. Length of drill bit cutting lips and/or
angles not equal
2. Bent drill bit
1. Resharpen drill bit correctly
2. Replace drill bit
Wood splinters on
underside
1. No back up material under workpiece
1. Support workpiece or clamp it
Woodpiece torn
loose from hand
1. Not supported or clamped properly
1.Support workpiece or clamp it
Drill bit binds in
workpiece
Excessive drill bit
run out or wobble
1.Workpiece pinching drill bit or excessive
feed pressure
2.Bent drill bit
3. Worn spindle bearings
4. Drill bit not correctly installed in the
chuck
5.Chuck not correctly assembled
1. Support workpiece or clamp it
2.Use a straight drill bit
3. Replace bearings
4. Install drill bit correctly
5.Correctly assemble the chuck
Quill returns too
slow or too fast
1.Spring has improper tension
1. Adjust spring tension
Chuck will not stay
attached to
spindle. It falls off
when trying to
install it
1. Dirt or oil on the tapered inside surface
of chuck or on the spindles tapered
surface
1.Using a household detergent, clean the
tapered surfaces of the chuck and spindle
to remove all dirt, grease and oil
DP16-910B-VS 14
OPERATION & MAINTENANCE AND SERVICE
Summary of Contents for DP16-910B-VS
Page 23: ...DP16 910B VS 21 Parts Diagram...
