G4003G Gunsmith's Lathe
-35-
Symptom Possible Cause Possible Solution
Motor will not
start.
1. Main power panel switch is OFF.
2. Emergency switch is pushed in.
3. Circuit breaker or fuse has tripped.
4. No voltage or open connection.
5. Capacitor is at fault.
6. Motor direction switch is at fault.
7. Power switch or magnetic contactor is at
fault.
8. Motor is at fault.
1. Turn the main power panel switch ON.
2. Rotate emergency switch so it pops out.
3. Seek an electrician to troubleshoot and repair the
shop power supply.
4. Test circuit, replace wires and connections as
required
.
5. Replace capacitor.
6. Replace switch.
7. Replace power switch or magnetic contactor.
8. 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.
Machine is
loud belt slips
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.
4. Belt is slipping.
5. Belt is at fault.
1. Decrease depth of cut.
2. Refer to RPM feed rate chart for appropriate rates.
3.
Sharpen or replace cutters.
4.
Remove grease or oil on belt or pulleys/tighten belt
tensioner against low range belt.
5.
Replace belt.
Gear change
levers will not
shift into position.
1. Gears not aligned in headstock.
1. Rotate spindle by hand until gear falls into place.
Loud, repetitious
noise coming
from machine
at or near the
motor.
1. Pulley set screws or keys are missing or
loose.
2. Motor fan is hitting the cover.
1. Inspect keys and set screws. Replace or tighten if
necessary.
2. Tighten fan or shim cover, or replace items.
Motor is loud
when cutting.
Overheats or
bogs down in the
cut.
1. Excessive depth of cut or feed rate
.
2. RPM or feed rate wrong for cutting operation.
3. Cutting tool is dull
.
4. Gear setup is too tight, causing them to bind.
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.
Gear change
levers will not
shift into position.
1.
Gears not aligned in headstock. 1. Rotate spindle by hand until gear falls into place.
Troubleshooting
Motor & Gearbox
Review the troubleshooting and procedures in this section to fix your machine if a problem
develops. If you need replacement parts or you are unsure of your repair skills, then feel free
to call our Technical Support at (570) 546-9663.
SECTION 7: SERVICE
