Operation - Grizzly G0602 Owner's Manual

Operation

Symptom Possible Cause
Entire machine 1. Workpiece is unbalanced.
vibrates upon
startup and while 2. Workpiece is hitting stationary object.
running.
3. Loose or damaged V-belt(s).
4. V-belt pulleys are not properly aligned.
5. Chuck or faceplate is unbalanced or not
installed properly.
6. Change gears not aligned or no backlash.
7. Worn or broken gear present.
8. Broken gear or bad bearing.
9. Spindle bearings at fault.
Bad surface finish. 1. Wrong spindle speed or feed rate.
2. Dull tooling or poor tool selection.
3. Tool height not at spindle centerline.
4. Too much play in gibs.
Tapered tool difficult 1. Quill is not retracted all the way back into
to remove from the tailstock.
tailstock quill. 2. Contaminants not removed from taper
before inserting into quill.
Cross slide, 1. Gibs are out of adjustment.
compound rest, or 2. Handwheel is loose or backlash is high.
carriage feed has
sloppy operation.
Cross slide, 1. Dovetail ways loaded with shavings, dust,
compound, or or grime.
carriage feed 2. Gib screws are too tight.
handwheel hard to 3. Backlash setting too tight.
move. 4. Bedways are dry.
Cutting tool 1. Tool holder not tight enough.
or machine 2. Cutting tool sticks too far out of tool holder;
components vibrate lack of support.
excessively during 3. Gibs are out of adjustment.
cutting. 4. Dull cutting tool.
5. Incorrect spindle speed or feed rate.
-58-
Possible Solution
1. Re-install workpiece as centered with the spindle
bore as possible.
2. Stop lathe immediately and correct interference
problem.
3. Re-tension/replace the V-belt(s) as necessary (see
Page 64).
4. Align the V-belt pulleys.
5. Check installation; re-balance chuck or faceplate;
contact a local machine shop for help.
6. Adjust change gears and establish backlash.
7. Inspect gears, and replace if necessary.
8. Replace broken gear or bearing.
9. Reset spindle bearing preload or replace worn
spindle bearings.
1. Adjust for appropriate spindle speed and feed rate.
2. Sharpen tooling or select a better tool for the
intended operation.
3. Adjust tool height to spindle centerline (see Page
40).
4. Tighten gibs (see Page 61).
1. Turn the quill handwheel until it forces the tapered
tool out of quill.
2. Clean the taper and bore, then re-install tool.
1. Adjust gibs (see Page 61).
2. Tighten handwheel fasteners, adjust handwheel
backlash to a minimum (see Page 60).
1. Clean ways and re-lubricate.
2. Loosen gib screw(s) slightly (see Page 61).
3. Slightly loosen backlash setting (see Page 60).
4. Lubricate bedways/ball oilers.
1. Check for debris, clean, and re-tighten.
2. Re-install cutting tool so no more than
length is sticking out of tool holder.
3. Adjust gibs at affected component (see Page 61).
4. Replace or resharpen cutting tool.
5. Use the recommended spindle speed and feed rate.
Model G0602/G0752 (Mfg. Since 11/12)
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