Grizzly Oscilatign Spindle GO739 - Manual (Page 22)

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Model g0739 (Mfg. since 2/12)
Review the troubleshooting and procedures in this section if a problem develops with your machine. If you
need replacement parts or additional help with a procedure, call our Technical Support at (570) 546-9663.
Note: Please gather the serial number and manufacture date of your machine before calling.
SECTION 7: SERvICE
Troubleshooting
symptom possible Cause possible solution
Motor will not start. 1. switch disabling key removed.
2. loose connections at motor or switch.
3. Motor brushes worn.
1. insert key to enable switch.
2. inspect all motor connections for loose or open
connections.
3. replace motor brushes as a set.
Motor will not
start; fuses or
circuit breakers
blow. 1. short circuit in line cord or plug.
2. loose connections at motor switch.
3. switch, bridge rectifier or motor at fault.
1. inspect cord and plug for damaged insulation
or shorted wires.
2. inspect all motor connections for loose or
shorted terminals or worn insulation.
3. replace the component at fault.
Motor stalls
(resulting in
blown fuses or
tripped circuit).
1. Motor overloaded. 1. reduce feeding pressure.
Machine slows
when operating. 1. Workpiece pressure is too great. 1. secure machine to workbench.
deep sanding
grooves or scars in
workpiece.
1. sanding sleeve too coarse for the
desired finish.
2. Workpiece sanded across the grain.
3. too much feeding pressure against
workpiece.
1. Use a finer grit sanding sleeve.
2. sand with the grain.
3. reduce pressure on workpiece while sanding.
grains rub off the
sanding sleeve. 1. sanding sleeve has been stored in an
incorrect environment.
2. sanding sleeve has been folded or
smashed.
1. store sanding sleeve away from extremely dry
or hot temperatures.
2. store sanding sleeves separately and not
folded or flat.
sanding surfaces
clog quickly or burn. 1. too much pressure against sleeve.
2. sanding softwood or wood with a high
sap content.
1. reduce pressure on workpiece while sanding.
2. Either use different wood or plan on cleaning/
replacing sleeves frequently.
Burn marks on
workpiece. 1. Using too fine of sanding grit.
2. Using too much pressure.
3. Work held still for too long. 1. Use a coarser grit sanding sleeve.
2. reduce pressure on workpiece while sanding.
3. do not keep workpiece in one place for too long.