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Model T25920/T25926 (Mfd. Since 08/14)
-33-
Symptom Possible Cause Corrective Action
Vibration noise while
machine is running; noise
changes when speed is
changed.
1. Belt cover loose. 1. Tighten the knobs that secure the belt cover; if nec-
essary install a soft, vibration dampening material
between the belt cover and the headstock casting.
Excessive vibration (with
workpiece installed).
1. Workpiece mounted incorrectly.
2. Headstock, tailstock, or tool rest not
securely clamped to lathe bed.
3. Workpiece warped, out of round, or
is flawed.
4. Spindle speed is set too fast for
mounted workpiece.
5. Lathe is resting on an uneven sur-
face.
6. Motor mount bolts are loose.
7. Belt is worn or damaged.
8. Spindle bearings are worn.
1. Re-mount workpiece, making sure that centers are
embedded in true center of workpiece.
2. Check clamp levers and tighten if necessary.
3. Cut workpiece to correct, or use a different
workpiece.
4. Reduce the spindle speed.
5. Shim base or adjust feet on workbench to remove
any wobbles.
6. Tighten motor mount bolts.
7. Replace belt (see Page 34).
8. Replace spindle bearings.
Chisels grab or dig into
workpiece.
1. Tool rest set too low.
2. Tool rest set too far from workpiece.
3. Wrong chisel/tool being used.
4. Chisel/tool dull.
1. Set tool rest higher. See Page 21 for how to prop-
erly set tool rest height.
2. Move the tool rest closer to the workpiece. See
Page 21 for the proper workpiece/tool rest clear-
ance.
3. Use the correct chisel/tool; educate yourself by
reading books, trade magazines, or seeking help
from an experienced lathe operator.
4. Sharpen or replace the chisel/tool you are using.
Bad surface finish on
workpiece.
1. Wrong spindle speed.
2. Dull chisel or wrong chisel being
used for the operation.
1. Use trial-and-error to find a better spindle speed.
2. Sharpen chisel or try a different chisel.
Tailstock moves under
load.
1. Tailstock mounting bolt loose.
2. Bed surface is oily or greasy.
1. Tighten.
2. Clean bed surface to remove excess oil/grease.
Can't remove tapered tool
from tailstock barrel.
1. Tailstock barrel not retracted all the
way back into the tailstock.
2. Debris was not removed from taper
before inserting into barrel.
1. Turn the barrel handwheel until it forces taper out of
barrel.
2
. Always make sure that taper surfaces are clean.
Wood Lathe Operation