Troubleshooting - Jet J-2500 Operating Instructions And Parts Manual

Troubleshooting

Trouble
Drill press will not start.
Drill press does not
come up to speed.
Drill Press vibrates
excessively.
Noisy Operation.
Workpiece Burns.
Drill bit wanders.
Wood splinters on the
underside.
Drill bit binds in
workpiece.
Excessive drill bit
runout, or wobble.
Quill returns too slow, or
too fast.
Chuck or arbor does not
stay in place.
Probable Cause
Drill press unplugged from wall, or motor.
Fuse blown, or circuit breaker tripped.
Cord damaged.
Starting capacitor bad.
Extension cord too light or too long.
Low current.
Stand on uneven surface.
Bad belt(s).
Incorrect belt tension.
Dry spindle.
Loose spindle pulley.
Loose motor pulley.
Incorrect Speed.
Chips not clearing from hole or bit.
Dull drill bit.
Feeding too slowly.
Bit sharpened incorrectly.
Bent drill bit.
Bit, or chuck not installed properly.
No backing board used.
Workpiece pinching the bit.
Excessive feed rate.
Chuck jaws not tight.
Improper belt tension.
Bent drill bit.
Worn spindle bearings.
Bit, or chuck not properly installed.
Spring has improper tension.
Dirt, grease, etc on arbor, chuck, or
spindle.
Remedy
Check all plug connections.
Replace fuse, or reset circuit breaker.
Replace cord.
Replace starting capacitor.
Replace with adequate size and length cord.
Contact a qualified electrician.
Adjust stand so that it rests evenly on the floor.
Replace belts.
Adjust belt tension. See the Changing Spindle
Speeds section.
Lubricate spindle. See the Lubrication section.
Check tightness of retaining nut on pulley, and tighten
if necessary.
Tighten setscrews in pulleys.
Change to appropriate speed; see the Changing
Spindle Speeds section.
Retract drill bit frequently to remove chips.
Resharpen, or replace drill bit.
Increase feed rate.
Resharpen bit correctly.
Replace drill bit.
Reinstall the chuck, or bit properly.
Place a scrap board underneath the workpiece to
prevent splintering.
Support or clamp workpiece.
Decrease feed rate.
Tighten chuck jaws.
Adjust belt tension (Changing Spindle Speeds )
Replace drill bit.
Replace spindle bearings.
Reinstall the bit, or chuck properly.
Adjust spring tension. See the Return Spring
Adjustment section.
Clean all mating surfaces thoroughly with a cleaner
degreaser.
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