Grizzly G0782 Owner's Manual page 75

Symptom Possible Cause
Workpiece is 1. Spindle and tailstock centers are not
tapered. properly aligned with each other.
2. Lathe bed is twisted.
Chuck jaws will 1. Chips are lodged in jaws or scroll plate.
not move or do not
move easily. 2. Dent/ridge in jaw slot of chuck body.
Spindle lacks 1. Belts are slipping.
turning power or
starts up slowly.
Gear change dials 1. Gears not aligned inside headstock/quick-
will not shift into change gearbox.
position.
Workpiece slips in 1. Chuck jaws do not match workpiece
chuck.
diameter.
2. Cutting force is too high.
3. Speed is too high.
4. Jaws are worn or not installed properly.
Carriage will not 1. Gears are not all engaged.
feed or is hard to 2. Half nut lever is engaged.
move. 3. Carriage lock is tightened down.
4. Screw is loose on feed handle.
5. Chips have loaded up on ways.
6. Ways are dry and in need of lubrication.
7. Gibs are too tight.
8. Gears broken.
9. Feed clutch is slipping.
Model G0782 (Mfd. Since 10/15)
Possible Solution
1. Re-align tailstock to headstock spindle centerline
(Page 36).
2. Level lathe (Page 21).
1. Remove jaws, clean and lubricate scroll plate, then
re-install jaws.
2. Stone or file off high spot in jaw slots.
1. Tighten belts (Page 79); inspect for oil/grease on
belts and clean/replace as necessary.
1. Rotate spindle by hand with light pressure on the
dial until gears fall into place.
1. Reposition or mold workpiece so that diameter
matches chuck jaw dimensions.
2. Reduce cutting force.
3. Reduce spindle speed (Page 45).
4. Remove/re-install properly; turn jaws with cutting
tool so they are concentric; replace jaws or chuck.
1. Engage gears using gear dials.
2. Disengage half nut lever.
3. Check to make sure carriage lock is fully released.
4. Tighten.
5. Frequently clear away chips that load up during
turning operations.
6. Lubricate bedways/ball oilers (Page 67).
7. Loosen gib screw(s) slightly (Page 75).
8. Replace gears.
9. Increase clutch spring pressure (Page 78).
-73-