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128-01-2305
128-0621-003
8. Troubleshooting
8.1 Mechanical Issues
▪ Work attached to the lathe
▪ Lathe Mounting
▪ (Either on bench or stand)
1. Remove any work pieces/tools attached to the
headstock, inspect if there is any foreign materials or
damages to the threads.
2. Attach the tools one at a time to check which part is
causing the vibration.
3. Extra weights can be added to reduce the amount of
vibration that occurs from large, unbalanced work
pieces.
Faceplate or chuck running
out of true
▪ Back of face plate
▪ Threads
▪ Inner threads on faceplate
▪ Spindle thread on
headstock
1. Inspect if there is any damage on the threads.
2. Mount the faceplate or chuck onto the machine and
check if it is seating securely on the bearing.
Turning tools not sliding
smoothly across Tool rest
Lightly use sandpaper or a grinder to smooth out the
top surface of the tool rest.
Spur drive centre/live
centre not holding in
spindle or quill taper when
turning
1. Inspect both male and female Morse Taper surfaces
to check for any foreign materials or defects on the
surface.
2. Clean the surface and remount the tools.
Tailstock and Headstock
centres not aligning
▪ Lathe bed connection
▪ Headstock detent position
▪ Tailstock adjustment plate
1. Inspect all connections of the bed sections to make
sure all the top surfaces are flush with one another.
2. Check to ensure the headstock is properly locked in
the zero-degree detent position.
3. Loosen the tailstock adjustment plate located on the
bottom of the tailstock and align the headstock and
tailstock. Tighten the tailstock adjustment plate to
finish.
Tailstock Handwheel
hard to turn or will not turn
▪ Quill lock
▪ Inside the tailstock quill
housing
1. Check if quill lock on the tailstock is not engaged.
2. Fully extend the tailstock quill out to extract the quill
from its housing. Inspect both quill and housing
surface and threads for any defects and foreign
materials. Apply lubricant to quill surface and thread
and reassemble.
Tailstock binds
while sliding along the bed
▪ Lathe bed
▪ Tailstock adjustment plate
1. Check for defects or foreign materials on the bed.
2. Loosen the tailstock lock.
Tailstock jumps
at bed section joints.
▪ Lathe bed
▪ Tailstock bottom surface
1. Inspect uneven surfaces on the lathe bed and make
sure the bed connection areas are flush.
2. Check for any defects and foreign materials on the
bottom of the tailstock casting.
3. Use sandpaper to lightly sand down the defects on
the lathe bed or the tailstock casting.
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