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Operation and Work Results (Continued)
Symptom
Possible Cause
Loud, repetitious
1. Pulley setscrews or keys are missing or
noise coming
loose.
from machine
2. Motor fan is hitting the cover.
at or near the
motor.
Motor is loud
1. Excessive depth of cut or feed rate.
when cutting.
2. RPM or feed rate wrong for cutting operation.
Overheats or
bogs down in the
3. Cutting tool is dull.
cut.
4. Gear setup is too tight, causing them to bind.
Loud, repetitious
1. Gears not aligned in headstock or no back-
noise coming
lash.
from machine.
2. Broken gear or bad bearing.
3. Workpiece is hitting stationary object.
Motor overheats.
1. Motor overloaded.
2. Air circulation through the motor restricted.
Gear change
1. Gears not aligned in headstock.
levers will not
shift into position.
Tailstock quill will
1. Quill lock lever is tightened down.
not feed out of
tailstock.
Carriage hard to
1. Carriage lock is tightened down.
move.
2. Chips have loaded up on bedways.
3. Bedways are dry and in need of lubrication.
4. Longitudinal stops are interfering.
5. Gibs are too tight.
G0492 12" X 36" Combo Lathe/Mill
Troubleshooting
Possible Solution
1. Inspect keys and setscrews. Replace or tighten if
necessary.
2. Tighten fan or shim cover, or replace items.
1. Decrease depth of cut or feed rate.
2. Refer to RPM feed rate chart for appropriate rates.
3. Sharpen or replace the cutting tool.
4. Readjust the gear setup with a small amount of
backlash so the gears move freely and smoothly
when the chuck is rotated by hand.
1. Adjust gears and establish backlash.
2. Replace broken gear or bearing.
3. Stop lathe immediately and correct interference
problem.
1. Reduce load on motor.
2. Clean out motor to provide normal air circulation.
1. Rotate spindle by hand until gear falls into place.
1. Turn lever counterclockwise.
1. Check to make sure table locks are fully released.
2. Frequently clean away chips that load up during
turning operations.
3. Lubricate bedways and handles.
4. Check to make sure that stops are floating and not
hitting the center stop.
5. Loosen gib screw(s) slightly.
-45-
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