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13.0 Troubleshooting the JWL-1440VS Lathe
Table 3
Symptom Possible Cause Correction
Motor fails to develop
full power.
Power line overloaded. Correct overload condition.
Undersized wires in supply system, or
extension cord is too long.
Increase supply wire size.
Running capacitor is bad. Replace running capacitor.
Worn motor. Replace motor.
Motor or spindle stalls
or will not start.
Excessive cut. Reduce depth of cut.
Worn or broken belt. Replace belt.
Improper cooling of motor.
Blow out sawdust from motor housing
fan.
Starting or Running capacitor is bad. Replace capacitor.
Centrifugal switch is bad. Replace centrifugal switch.
Worn spindle bearings. Replace bearings.
Worn motor. Replace motor.
Excessive vibration. Workpiece warped, out of round, has
major flaw, was improperly prepared for
turning, or RPM is set too high.
Correct problem by planing or sawing
workpiece, or discard entirely and use
new workpiece. Reduce RPM.
Worn spindle bearings. Replace spindle bearings.
Worn drive belt. Replace drive belt.
Motor mount bolts are loose. Tighten bolts.
Lathe on uneven surface. Adjust leveling feet.
Tools tend to grab or
dig in.
Dull tools. Keep tools sharp.
Tool rest set too low. Reposition tool rest height.
Tool rest set too far from workpiece. Reposition tool rest closer to workpiece.
Improper tool being used. Use correct tool for operation.
Headstock moves
when applying
pressure with
Tailstock.
Locking handle not tight. Tighten handle.
Excessive pressure being applied by
tailstock.
Slide headstock to left end, lock firmly,
then apply pressure to workpiece with
tailstock. Apply only sufficient force with
tailstock to hold workpiece securely in
place.
Tailstock moves when
applying pressure.
Cam lock nut needs adjusting. Tighten cam lock nut.
Excessive pressure being applied by
tailstock.
Slide tailstock to right side of lathe
against the stop. Move headstock into
position and apply pressure to
workpiece with tailstock.
Lathe bed and tailstock mating surfaces
are greasy or oily.
Remove tailstock and clean surfaces
with a cleaner/degreaser. Re-apply light
coat of oil to lathe bed surface.