Grizzly G9969 owner manual Drill Press Operations

Symptom	Possible Cause		Possible Solution
Machine vibrates excessively or is	1.	Motor or component is loose.	1.	Replace component fasteners and re-tighten
unusually noisy.				with thread locking fluid.
	2.	Belt is slapping belt cover.	2.	Replace, realign, or re-tension belt (refer to
				Page 24).
	3.	V-belt is worn or is loose.	3.	Replace belt.
	4.	Motor fan is rubbing on fan cover.	4.	Replace/repair dented fan cover, and replace
				loose or damaged fan.
	5.	Pulley is loose.	5.	Remove pulley, replace with key as required,
				and re-install securely.
	6.	Machine is incorrectly mounted to	6.	Make sure the mounting hardware is tight;
		the workbench, or the workbench is		place shims under machine.
		uneven.
	7.	Chuck or cutter is at fault.	7.	Replace out-of-round chuck, replace or
				resharpen cutter, use appropriate feed rate
	9.	Spindle bearings at fault.		and cutting RPM.
			8.	Check bearings, replace motor or bearings
	8.	Motor bearings are at fault.		as required.
			9.	Replace bearings.

Drill Press Operations

	Symptom	Possible Cause		Possible Solution
	Drilling stops, but the motor still	1.	The belt is loose or worn.	1.	Replace or adjust the belt.
	operates.	2.	The motor pulley is slipping on the	2.	To resecure the pulley:
			shaft.	a. UNPLUG THE DRILL PRESS.
				b. Remove set screw on slipping pulley.
				c. Align flats on the pulley shaft with set screw
					hole.
				d. Reinstall and tighten the set screw.
		3.	Bit slips in chuck.	3.	Tighten bit; inspect bit for burrs or other
					obstructions that might interfere with clamp-
					ing surface.
	The chuck wobbles or is loose on	1.	Foreign material is stuck between the	1.	Remove the chuck and clean and de-burr the
	the spindle shaft.		chuck-to-spindle mating surface.		tapered chuck and spindle mating surfaces,
					then reassemble.
		2.	Damaged chuck.	2.	Replace chuck and arbor.
	The spindle does not retract com-	1.	The quill shaft is gummy with sawdust	1.	Clean the gummy substance with penetrat-
	pletely in the uppermost position		and oil.		ing oil and lubricate with a light coat of oil.
	or it binds.			2.	Increase the feed shaft return spring tension
		2.	The feed shaft return spring is weak.		as described on Page 31.
				3.	Loosen jam nut. Slightly turn out screw
		3.	The quill deflection screw is binding		where the quill binds, retighten jam nut and
			the quill.		recheck for binding.
		4.	The return height nut is preventing the	4.	Loosen return height nut.
			quill from retracting fully.
	The quill has excessive deflec-	1.	The quill shaft is at fault.	1.	Adjust the quill screw.
	tion.	2.	The quill bearings are worn.	2.	Replace the quill bearings.
	Holes drilled at an angle.	1.	Headstock is not at 90 degrees.	1.	Adjust headstock tilt (see Page 26).
	Drill bit wobbles, holes are over-	1.	Drill bit installed incorrectly.	1.	Remove drill bit and reinstall.
	sized.
-30-					G9969 Radial Drill Press