Grizzly G0887, Owner'S Manual, Page: 63 / 108

Model G0887 (Mfd. Since 01/19)
-61-
Symptom Possible Cause Possible Solution
Main motor
does not start. 1. Hydraulic unit, coolant pump, and blade start
buttons not pressed.
2. Headstock not raised/vise not closed.
3. Downfeed limit switch engaged/at fault.
4. Main motor thermal overload relay tripped/at
fault.
5. Main motor contactor not energized/poor
contacts/at fault.
6. Wiring broken, disconnected, or corroded.
7. Electrical cabinet or control panel circuit
board at fault.
8. Main motor at fault.
1. Press hydraulic unit, coolant pump, and blade start
buttons.
2. Raise headstock/close vise.
3. Raise headstock/adjust downfeed stop bolt and limit
switch (
Page 72)/replace switch.
4. Reset; adjust trip load dial; replace if at fault.
5. Test all legs for power; replace if at fault.
6. Replace/fix broken, disconnected, or corroded wires.
7. Inspect/replace if at fault.
8. Test/repair/replace.
Blade brush
motor does not
start when main
motor starts. 1. Wiring broken, disconnected, or corroded.
2. Blade brush motor at fault. 1. Replace/fix broken, disconnected, or corroded wires.
2. Test/repair/replace.
Machine
stalls or is
underpowered. 1. Feed rate too fast; blade speed too low.
2. No cutting lubrication.
3. Blade not correct for material being cut.
4. Improper workpiece material for saw/blade.
5. Blade slipping on wheels.
6. Belt slipping; motor pulley slipping on shaft.
7. Plug at fault/wired incorrectly.
8. Blade dull, or installed backwards.
9. Motor overheated.
10. Contactor has poor contacts.
11. Motor or motor bearings at fault.
1. Reduce feed rate (
Page 31); increase blade speed
( Page 31).
2. Use applicable coolant/lubricant.
3. Use correct blade for operation (
Page 28).
4. Only cut correct material for saw blade/type.
5. Adjust blade tracking (
Page 68), tension (Page 36).
6. Tension/replace belt ( Page 74); replace pulley/shaft.
7. Test for good contacts; correct wiring.
8. Replace blade (
Page 34). Ensure teeth face cutting
direction.
9. Clean offending motor, let cool, reduce workload.
10. Test all legs for power; repair/replace if at fault.
11. Test/repair/replace.
Machine has
vibration or
noisy operation. 1. Motor, motor mount, or component loose.
2. Blade damaged or dull.
3. Belt worn or loose/slapping cover.
4. Workpiece loose.
5. Motor fan rubbing on fan cover.
6. Pulley loose/misaligned.
7. Motor bearings at fault.
8. Gearbox at fault.
1. Re-tighten component; inspect/replace damaged bolts/
nuts.
2. Replace blade ( Page 34).
3. Inspect/tension/replace belt ( Page 74).
4. Secure workpiece with vise; increase vise clamping
pressure (
Page 42).
5. Fix/replace fan cover; replace loose/damaged fan.
6. Re-align/replace shaft, pulley, set screw, and key.
7. Turn shaft; loose shaft requires bearing replacement.
8. Rebuild gearbox and replace bad gear(s)/bearing(s).
Motor & Electrical (Cont.)