Model G0898 (Mfd. Since 12/19)
-29-
Operation
Symptom
Possible Cause
Possible Solution
Machine vibrates
excessively (non-
motor related).
1. Machine not stable on workbench.
2. Incorrect grinding belt tension.
3. Broken/defective grinding belt.
1. Remount/shim machine (
Page 14).
2. Make sure tension lever is in tensioning position
(
Page 20).
3. Replace grinding belt (
Page 20).
Grains easily rub off
belt.
1. Grinding belt has been stored in damp
environment.
2. Grinding belt has been smashed or folded.
3. Grinding belt is too old.
1. Replace damaged grinding belt (
Page 20). Store
grinding belt in a cool, dry area.
2. Replace damaged grinding belt (
Page 20). Do not
bend or fold grinding belt.
3. Use new grinding belt.
Belt tracks to one
side under load.
1. Belt tracking not set correctly.
1. Ensure belt tracking is set correctly (
Page 21).
Deep sanding
grooves or
scratches in
workpiece.
1. Excessive feed pressure while grinding.
2. Workpiece held still for too long against
grinding belt.
3. Grinding belt too coarse.
4. Platen worn.
1. Reduce workpiece feed pressure.
2. Keep workpiece moving while grinding.
3. Use finer grit grinding belt (
Page 20).
4. Replace platen.
Snake-shaped
marks on
workpiece.
1. Grinding belt loaded up with residue.
2. Grinding belt damaged.
3. Platen noticeably worn.
1. Clean grinding belt (
Page 25).
2. Replace grinding belt (
Page 20).
3. Replace platen.
Belt clogs quickly.
1. Excessive feed pressure while grinding.
2. Grinding belt worn or damaged.
3. Workpiece material is prone to belt-
clogging, such as soft aluminum.
1. Clean grinding belt (
Page 25), and then reduce
workpiece pressure.
2. Replace grinding belt (
Page 20).
3. Reduce feed pressure. Use coarser-grit belt (
Page
20).
Sanded surface not
square.
1. Table not perpendicular to platen.
1. Adjust table tilt to be perpendicular with platen.
Workpiece
frequently gets
pulled out of hand
when sanding.
1. Workpiece not supported sufficiently against
table/rest.
2. Leading edge or sharp edges grabbing into
grinding belt.
1. Use work table/rest, or push block to support
workpiece.
2. Change angle or orientation of workpiece so
workpiece is not digging into oncoming direction of
grinding belt.
Summary of Contents for G0898
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