Model 80161A
7
Palmgren Operating Instructions and Parts Manual
Troubleshooting Chart
Motor does not run when start button
is pushed
Motor overheats
Spindle overheats
Lack of power at spindle
Cutting tool chattering
Spindle does not return to full “up”
position
Excessive backlash in lead screws
Excessive noise
Excessive play in table
1. No power to motor
2. Blown fuse on control box
3. Defective switch or contactor
1. Low voltage to motor
2. V-belts too tight
3. Too deep or too fast a cut
4. Worn contacts in contactor
1. Poor quill bearing lubrication
2. Spindle bearings too tight
3. Mill drill operated at high speeds
for extended period
V-belts loose
1. Spindle bearings loose
2. Table is loose
3. Worn spindle bearings
4. Head clamp bolts loose
5. Too deep or too fast a cut
6. Loose workpiece
1. Poorly adjusted return spring
2. Worn return spring
Worn lead screw nuts
1. Loose spindle bearings
2. Loose motor pulley
3. Dull cutting tools
Table is loose
1. Check electrical connector and
circuit breaker or fuse
2. Correct wiring problem and
replace fuse
3. Replace defective parts
1. Check voltage
2. Tension belts properly
3. Reduce cut depth or speed
4. Replace contactor
1. Lubricate bearings with bearing
grease
2. Adjust bearings so that spindle
does not bind
3. Allow mill drill to cool
Tension V-belts properly
1. Tighten bearings
2. Adjust table and saddle gibs
3. Replace bearings
4. Tighten bolts
5. Reduce cut depth or speed
6. Clamp workpiece securely
1. Increase return spring tension
2. Replace return spring
Adjust or replace lead screw nuts
1. Adjust bearings properly
2. Tighten pulley set screws
3. Replace cutting tools
Adjust table gibs properly
Symptom
Possible Cause(s)
Corrective Action
E
N
G
L
I
S
H
