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M1109 Combo Lathe/Mill
SYMPTOM
Loud, repetitious
1. Pulley setscrews or keys are missing or loose.
noise coming
from machine
2. Motor fan is hitting the cover.
at or near the
motor.
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.
Gear change
1. Gears not aligned in headstock.
levers will not
shift into posi-
tion.
Motor overheats.
1. Motor overloaded.
2. Air circulation through the motor restricted.
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.
Tailstock quill
1. Quill lock lever is tightened down.
will not feed out
of tailstock.
Motor is loud
1. Excessive depth of cut or feed rate.
when cutting.
2. RPM or feed rate wrong for cutting
Overheats or
operation.
bogs down in the
3. Cutting tool is dull.
cut.
4. Gear setup is too tight, causing them to
bind.
POSSIBLE CAUSE
PARTS
-43-
CORRECTIVE ACTION
1. Inspect keys and setscrews. Replace or tighten if
necessary.
2. Tighten fan or shim cover, or replace items.
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.
1. Rotate spindle by hand until gear falls into place.
1. Reduce load on motor.
2. Clean out motor to provide normal air circulation.
1. Adjust gears and establish backlash.
2. Replace broken gear or bearing.
3. Stop lathe immediately and correct interference
problem.
1. Turn lever counterclockwise.
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.
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