7
TROUBLESHOOTING
SYMPTOM
Clutch slips and tap will not turn
Spindle motor does not turn or stops
Control arm drops or is difficult to move
POSSIBLE CAUSE(S)
1. Tap holder clutch torsion needs to be
adjusted
2. No tap lubrication
3. Dull tap
4. Hole and tap misaligned
5. Hole diameter too small
6. Wrong tap for workpiece material
1. Check air supply pressure
2. Excessive pressure drop (30 PSI)
3. Insufficient lubrication
4. Clogged spindle motor exhaust filter
5. Clogged air supply filter
6. Worn vanes
Worn damper spring
CORRECTIVE ACTION
1. Adjust tap holder clutch torsion
(see Figure 13)
2. Apply lubrication to tap
3. Replace tap
4. Reposition tap arm
5. Enlarge hole
6. Replace tap
1. Adjust pressure between 90-115 PSI
2. Air supply compressor not large enough
3. Make sure oil flow rate from lubricator is
3-5 drops per minute
4. Clean or replace filter
5. Clean or replace filter
6. Replace vanes
Replace damper spring
Palmgren Operating Manual & Parts List
80420, 80421, 80422 and 80423
