Grizzly G0647, G0646 owner manual Operations

Motor & Electrical

Symptom	Possible Cause		Possible Solution
Machine has vibra-	1.	Motor wired out of phase.	1.	Swap any to incoming power wires at the motor
tion or noisy opera-				(Page 56).
tion.	2.	Motor or component is loose.	2.	Inspect/replace stripped or damaged bolts/nuts, and
				re-tighten with thread locking fluid.
	3.	Motor mount loose/broken.	3.	Tighten/replace.
	4.	Machine is incorrectly mounted or sits	4.	Tighten/replace anchor studs in floor; relocate/shim
		unevenly.		machine.
	5.	Motor fan is rubbing on fan cover.	5.	Replace dented fan cover; replace loose/damaged
				fan.
	6.	Motor bearings are at fault.	6.	Test by rotating shaft; rotational grinding/loose shaft
				requires bearing replacement.

Operations

Symptom		Possible Cause		Possible Solution
Cuts are excessively		1.	Tooling damaged or dull.	1.	Check/sharpen/replace tooling.
ragged or not accu-		2.	Not using proper station.	2.	Use the appropriate ironworker station for your
rate.					operation
		3.	Tooling not installed properly.	3.	Check/repair tooling installation and clearances.
		4.	Cutting stroke not continuous through the	4.	Keep the Normal/Inch switch in Normal position and
			workpiece.		pressure on pedal actuator until workpiece is cut
					completely through.
		5.	Workpiece moves away from tooling during	5.	Use hold-downs, table guides, and other devices to
			operation.		ensure workpiece is secure before cutting.
Tooling not	cutting	1.	Workpiece dimensions not within capacity	1.	Make sure workpiece dimensions are within machine/
completely	through		of machine.		station capacity; use cutting lubricant.
workpiece.		2.	Tooling is damaged or dull.	2.	Check/sharpen/replace tooling.
		3.	Hydraulic pump at fault.	3.	Test/adjust correct hydraulic fluid pressure (Page
					50); replace pump if necessary.
		4.	Hydraulic system has leaks or valves at	4.	Check/repair/replace hydraulic hoses, connections,
			fault.		and valves.
Loud unusual noise		1.	Limit stops not properly set.	1.	Set limit rings and stops to factory settings (Page
when beam revers-					50).
es direction.
Hydraulic fluid tem-		1.	Machine cutting at/beyond capacity.	1.	Turn machine OFF and allow hydraulic fluid to cool;
perature	at/over				make cuts only with the capacity of your machine.
160°F (70°C).		2.	Hydraulic fluid pressure set to high.	2.	Reduce hyrdaulic fluid relief pressure to 3000 PSI
					(Page 50).
		3.	Incorrect hydraulic fluid type.	3.	Use only one of recommended hydraulic fluids from
					Figure 54 on Page 40.
		4.	Hydraulic system at fault.	4.	Have a qualified hydraulic service technician ser-
					vice/repair the hydraulic system.

-44- G0646/G0647 50/65 Ton Ironworker