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Grizzly G0602 Owner's Manual: Section 7: Service; Troubleshooting

10" x 22" benchtop lathe.
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SECTION 7: SERVICE

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.
Motor & Gearbox
Symptom
Possible Cause
1. Main power panel switch is OFF.
Motor will not
start.
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.
Fuses or circuit
1. Short circuit in line cord or plug.
breakers trip
open.
2. Short circuit in motor or loose connections.
3. Incorrect fuses or circuit breakers in power
supply.
Machine is
1. Excessive depth of cut.
loud belt slips
2. RPM or feed rate wrong for operation.
when cutting.
3. Dull cutters.
Overheats or
4. Belt is slipping.
bogs down in the
cut.
5. Belt is at fault.
Gear change
1. Gears not aligned in headstock.
levers will not
shift into position.
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
3. Cutting tool is dull.
bogs down in the
4. Gear setup is too tight, causing them to bind.
cut.
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.
-36-

Troubleshooting

Possible Solution
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.
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.
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.
1. Rotate spindle by hand until gear falls into place.
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. Reduce load on motor.
2. Clean out motor to provide normal air circulation.
1. Rotate spindle by hand until gear falls into place.
G0602 10" X 22" Benchtop Lathe

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