Troubleshooting - Powermatic 66 Operating Instructions And Parts Manual

Troubleshooting

Trouble
Excessive vibration.
Cuts out-of-square
when crosscutting.
Motor stalls or
workpiece binds or
burns.
Cuts not true at 90 or
45 degrees.
Tilt or saw raising
handwheels difficult
to turn.
Motor overheats.
Motor starts slowly or
fails to come up to
speed.
Motor fails to develop
full power.
Probable Cause
Tilt or raising clamp knobs not
tightened.
Blade out of balance.
Bad motor.
Loose arbor or motor sheave.
Miter gauge out of adjustment.
Miter slot misaligned.
Excessive feed.
Bad motor.
Dull or incorrect blade.
Miter slot misaligned.
Fence misalignment.
Stop screws not set properly.
Lock knob not released.
Worm and worm gear segment caked
with sawdust and pitch.
Worm and worm gear segment out of
alignment.
Motor overloaded.
Improper cooling of motor.
Low voltage.
Centrifugal switch not operating.
Bad motor.
Power line overloaded.
Undersize wires in supply system.
Low voltage.
Bad motor.
Remedy
Tighten knobs.
Change blade. [page 9]
Replace motor.
Tighten set screws. [page 13]
Reset stops and pointer. [page 12]
Realign table. [page 11]
Reduce feed.
Replace motor.
Replace blade. [page 9]
Realign miter slot. [page 11]
Realign fence. [see Fence manual]
Readust stop screws. [page 12]
Loosen lock knob.
Clean and re-grease.
Realign worm and worm gear
segment. [page 13]
Correct overload condition such as
reducing the feed rate.
Clean sawdust from fan and duct
areas of motor.
Request voltage check from power
company and correct low voltage
condition.
Replace switch.
Replace motor.
Correct overload condition.
Increase supply wire size.
Request voltage check from power
company and correct condition.
Replace motor.
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