1. Workpiece is unbalanced.
startup and while
2. Workpiece is hitting stationary object.
3. loose or damaged V-belt(s).
4. V-belt pulleys are not properly aligned.
5. Chuck or faceplate is unbalanced or not
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
2. Contaminants not removed from taper
before inserting into quill.
1. gibs are out of adjustment.
compound rest, or
2. handwheel is loose or backlash is high.
carriage feed has
1. dovetail ways loaded with shavings, dust,
2. gib screws are too tight.
handwheel hard to
3. Backlash setting too tight.
4. Bedways are dry.
1. tool holder not tight enough.
2. Cutting tool sticks too far out of tool holder;
lack of support.
3. gibs are out of adjustment.
4. dull cutting tool.
5. incorrect spindle speed or feed rate.
1. re-install workpiece as centered with the spindle
bore as possible.
2. stop lathe immediately and correct interference
3. re-tension/replace the V-belt(s) as necessary (see
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
1. Adjust for appropriate spindle speed and feed rate.
2. sharpen tooling or select a better tool for the
3. Adjust tool height to spindle centerline (see page
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)
of the total