Cutting Operations - Grizzly G0668 Owner's Manual

Motor & Electrical (continued)
Symptom Possible Cause
Machine has vibra- 1. V-belt(s) worn or loose.
tion or noisy opera-
tion.
2. Pulley is loose.
3. Motor mount loose/broken.
4. Machine is incorrectly mounted or sits
unevenly.
5. Workpiece is loose.
6. Motor fan is rubbing on fan cover.
7. Motor bearings are at fault.
8. Blade is at fault.
9. Blade wheels out of alignment.

Cutting Operations

Symptom Possible Cause
Machine slows when 1. Feeding workpiece too fast.
operating.
2. Blade is dull.
Ticking sound when 1. Blade weld contacting blade guide/support
the saw is running.
(a light ticking is normal).
2. Blade weld may be failing.
Blade contacting 1. Table improperly mounted or aligned.
table.
Vibration when cut- 1. Workpiece is loose.
ting.
2. Loose or damaged blade.
3. Metal chip buildup on wheels.
Rough or poor qual- 1. Feeding workpiece too fast.
ity cuts.
2. Incorrect blade for operation; worn or dam-
aged blade.
3. Blade guides/support adjusted incorrectly.
Blade wanders or 1. Blade lead.
doesn't cut straight.
2. Metal chip buildup on wheels.
Cuts are not square 1. Table tilt is not adjusted to "0".
(vertically).
2. Table is not square to the blade.
Wheel is noisy. 1. Wheel bearing is worn out.
2. V-belt is too tight (lower wheel).
Blade does not track 1. Wheels are not coplanar or aligned with
consistently, cor-
each other.
rectly, or at all.
2. Rubber tires on wheels are worn out.
G0668 20" Vertical Metal-Cutting Bandsaw
Possible Solution
1. Inspect/replace V-belts with a new matched set
(Pages 36 & 37).
2. Realign/replace shaft, pulley, set screw, and key as
required.
3. Tighten/replace.
4. Tighten/replace anchor studs in floor; relocate/shim
machine.
5. Use the correct holding fixture and reclamp
workpiece.
6. Replace dented fan cover; replace loose/damaged
fan.
7. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
8. Re-tension/replace blade (Pages 24 & 25).
9. Re-align blade wheels (Page 38).
Possible Solution
1. Reduce feed rate/increase blade speed.
2. Replace blade (Page 24).
1. Inspect/re-grind blade weld (Page 28); re-adjust
blade guides/support (Page 26).
2. Inspect weld and re-weld blade if necessary (Page
28), or replace blade (Page 24).
1. Properly align table (Page 40).
1. Use the correct holding fixture and reclamp
workpiece.
2. Re-tension/replace blade (Pages 24 & 25).
3. Clean metal chips from wheels.
1. Reduce feed rate/increase blade speed.
2. Use the correct blade for the operation (Page 19);
replace worn or damaged blade (Page 24).
3. Correctly adjust blade guides/support (Page 26);
set the blade guides approximately 1/8" above
workpiece.
1. Re-tension/replace blade (Pages 24 & 25).
2. Clean metal chips from wheels.
1. Adjust table to "0" tilt.
2. Adjust table square with blade (Page 40).
1. Replace wheel bearing.
2. Check/re-tension the V-belt (Page 36).
1. Adjust wheels to be coplanar/aligned with one
another (Page 38).
2. Redress the rubber tires on the wheels (Page 33).
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