Troubleshooting - Wilton 8020 User Manual

Troubleshooting
16
Fault
Probable Cause
Suggested Remedy
Excessive bladebreakage
1. Incorrect speed or feed.
1. Check Machinist's Handbook for
"
speed/feed appropriate for the
material to be cut.
2. Teethtoo coarse for
2. Check Machinist's handbook for
material.
recommendedblade type.
3. Incorrect blade tension. 3. Adjust blade tension to the point
where the bladejust does not slip
on the wheel.
Prematurebladedulling
1. Blade teeth too coarse.
1. Use a finer tooth blade.
2. Blade speed too high.
2. Try a lower blade speed.
3. Insufficient blade tension.
3. Increase tension to proper level.
Bad cuts (crooked)
1. Feed pressure too fast.
1. Decrease pressure.
2. Guide bearings not
2. Adjust guide bearing clearance to
adjusted properly.
0.001 inch (0.002 inch maximum).
3. Inadequatebladetension.
3. Gradually increase blade tension.
4. Span betweenthe two 4. Move blade guide bar closer to
blade guides too wide.
work.
5. Dull blade.
5. Replaceblade.
6. Incorrect blade speed.
6. Check blade speed
(see Figure 3).
7. Blade guide assembly
7. Tighten blade guide assembly.
loose.
8. Blade guide bearing
8. Tighten blade guide bearing
assemblyloose.
assembly
9. Guide bearing worn.
9. Replace worn bearing.
Unusual wear on side/back of
1. Blade guides worn.
1. Replace blade guides.
blade 2. Blade guide bearings not
2. Adjust blade guide bearings.
adjusted.
Teeth missing/rippedfrom blade 1. Blade tooth pitchtoo
1. Use blade with finer tooth pitch.
coarse for work piece.
2. Gullets loading upwith
2a. Use blade with a coarse tooth
chips.
pitch-reduce feed pressure.
2b. Brush blade to remove chips.
Excessive speed reducer
1. V-belt is too tight.
1. ResetV-belt tension.
noise/vibration