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M1109 Combo Lathe/Mill
SERVICE
SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION
Motor will not
start.
1. Incorrect lathe operation.
2. Main power switch is OFF.
3. Emergency switch is pushed in.
4. Circuit breaker or fuse is at fault.
5. No voltage or open connection.
6. Motor is at fault.
1. Use the spindle direction ON/OFF lever.
2. Turn the main power switch ON at the back of the
lathe.
3. Rotate emergency switch so it pops out.
4. Seek an electrician to troubleshoot and repair the
shop power supply.
5. Test circuit, replace wires and connections as
required
.
6. Replace motor.
Fuses or circuit
breakers trip
open.
1. Short circuit in line cord or plug.
2. Short circuit in motor or loose connections.
3. Incorrect fuses or circuit breakers in power
supply.
1. Inspect cord or plug for damaged insulation and
shorted wires.
2. Inspect all connections on motor for loose or
shorted terminals or worn insulation.
3. Install correct fuses or circuit breakers.
Carriage hard to
move.
1. Chips have loaded up on bedways.
2. Bedways are dry and in need of lubrication.
3. Longitudinal stops are interfering.
4. Gibs are too tight.
1. Frequently clean away chips that load up during
turning operations.
2. Lubricate bedways and handles.
3. Check to make sure that stops are floating and not
hitting the center stop.
4. Loosen gib screw(s) slightly.
Machine is loud
when cutting.
Overheats or
bogs down in the
cut.
1. Excessive depth of cut.
2. RPM or Feed Rate wrong for operation.
3. Dull cutters.
1. Decrease depth of cut.
2. Refer to RPM Feed rate chart for appropriate rates.
3.
Sharpen or replace cutters.
Bad surface fin
-
ish.
1. Wrong RPM or feed rate.
2. Dull tooling or tool not centered correctly.
3. Too much play in gibs.
1. Adjust for appropriate RPM and feed rate.
2. Sharpen tooling and/or center tool correctly.
3. Tighten gibs.
Gear change
levers will not
shift into posi
-
tion.
1. Gears not aligned in headstock. 1. Rotate spindle by hand until gear falls into place.
Can't remove
tapered tool
from quill.
1. Quill had not retracted all the way back into
the tailstock.
1. Turn the quill handwheel until it forces taper out
of quill.
Troubleshooting
This section covers the most common lathe problems. DO NOT make any adjustments until the lathe is
disconnected from power and all moving parts have come to a complete stop.
Motor & Electrical