Grizzly G0503 instruction manual Troubleshooting, Symptom Possible Cause Corrective Action

Troubleshooting

SYMPTOM	POSSIBLE CAUSE		CORRECTIVE ACTION
Motor will not start.	1.	Low voltage.	1.	Check power line for proper voltage.
	2.	Open circuit in motor or loose connections.	2.	Inspect all lead connections on motor for loose or
				open connections
Motor will not start; fuses or	1.	Short circuit in power wires.	1.	Inspect wiring for damaged insulation and short-
circuit breakers blow.				ed wires.
	2.	Short circuit in motor or loose connections.	2.	Repair or replace all connections on motor that
				are loose or shorted or have worn insulation.
	3.	Circuit or motor overloaded	3.	Reduce amperage load on circuit or motor
Motor overheats.	1.	Motor overloaded.	1.	Reduce load on motor.
	2.	Air circulation through motor restricted.	2.	Clean out motor to provide normal air circulation.
Motor stalls (resulting in blown	1.	Short circuit in motor or loose connections.	1.	Repair or replace connections on motor that are
fuses or circuit breakers).				loose or shorted or have worn insulation.
	2.	Low voltage.	2.	Correct the low voltage conditions.
	3.	Incorrect fuses or circuit breakers in power line.	3.	Install correct fuses or circuit breakers.
	4.	Motor overloaded.	4.	Reduce load on motor.
Blade runs backwards.	1.	Two of the power wires reversed.	1.	Switch two of the power wires at the terminal
				strip.
Blade slows when operating.	1.	Applying too much pressure to workpiece.	1.	Slow down the feed rate.
Blade slows when cutting and	1.	V-Belt loose.	1.	Tighten V-Belt as instructed on page 48.
squeals on start-up.	1.	V-Belt worn out.	1.	Replace V-Belt as instructed on page 48.
Excessive vibration.	1.	V-Belt worn out.	1.	Replace V-Belt as instructed on page 48.
	2.	Bent or worn out blade.	2.	Replace blade as shown on page 22.
	3.	Wheel bearings are worn out.	3.	Replace wheel bearings.
	4.	Wheels are worn out.	4.	Replace wheels.
Conveyor will not run.	1.	Hydraulic motor is not running.	1.	See motor troubleshooting above.
	2.	Low on hydraulic fluid.	2.	Fix any leaks and add hydraulic fluid.
	3.	Hydraulic lines are attached backwards.	3.	Switch hydraulic lines.
Conveyor runs slow.	1.	Too much resistance because of a dull blade on	1.	Replace the blade on the resaw, or remove the
		resaw, or an extremely heavy workpiece.		extremely heavy workpiece.
	2.	Restricted line or bad hydraulic motor.	2.	Replace hydraulic line or motor.
	3.	Hydraulic fluid too cold.	3.	Warm up hydraulic fluid or replace fluid with ISO
				VG 68 hydraulic fluid.
Hydraulic fluid is overheating.	1.	Oil cooler fins are dirty.	1.	Clean fins.
	2.	Restricted flow through the oil cooler.	2.	Replace oil cooler.
	3.	Cooling fan not working.	3.	Repair cooling fan.
	4.	Overworked system.	4.	Reduce load on conveyor belt.
	5.	Low on hydraulic fluid.	5.	Fix any leaks and add hydraulic fluid.
	6.	Restricted hydraulic line.	6.	Remove any pinch or kink in the hydraulic line.
	7.	Clogged filter.	7.	Replace filter and perform a hydraulic system
				minor service as described on page 37.
Hydraulic fluid looks milky.	1.	Water in the hydraulic system.	1.	Replace the tank filler cap, tank gaskets, and
				repair leaks on the suction side of the hydraulic
				system. Then perform a hydraulic system major
				service as described on page 38.
Hydraulic fluid is dark brown	1.	Hydraulic fluid has become overheated and	1.	Repair the cause of overheating as described
or opaque.		thermal breakdown has occurred.		above and then perform a hydraulic system major
				service as described on page 38.
	2.	Hydraulic fluid is contaminated.	2.	Perform a hydraulic system major service as
				described on page 38.
Filter gauge is in the red.	1.	Filter is clogged.	1.	Replace filter and perform a hydraulic system
				minor service as described on page 37.
Blade does not run evenly on	1.	Tracking is not adjusted properly.	1.	Adjust tracking as instructed on page 40.
wheels or runs off.
Blade does not cut evenly or	1.	Blade is not properly tensioned.	1.	Adjust tension as instructed on page 26.
leaves a rough surface.	2.	Tooth set is uneven.	2.	Replace blade as shown on page 22.
	3.	Teeth are sharper on one side than the other.	3.	Replace blade as shown on page 22.
	4.	Blade has a bad weld, or a crack.	4.	Inspect blade and replace as shown on page 22
				if necessary.
Blade contacting guides.	1.	Guides not adjusted correctly.	1.	Adjust guides as shown on page 42.
Workpiece hangs up on pres-	1.	Pressure rollers out of adjustment.	1.	Adjust pressure rollers as described on page 29.
sure rollers.
Workpiece is thicker on one	1.	Conveyor is not level.	1.	Level the conveyor as described on page 44.
side than the other.

-68- Model G0503 (Mfg. Since 12/08)