Grizzly G0517g instruction manual Mill/Drill Operations

Symptom	Possible Cause	Possible Solution
Machine vibrates	1. Motor fan is rubbing on fan cover.	1. Replace/repair dented fan cover, and replace loose or
excessively or is unusually		damaged fan.
noisy.	2. Motor or component is loose.	2. Replace component	fasteners		and	re-tighten	with
		thread locking fluid.
	3. Belt is slapping belt cover.	3. Replace, realign, or	re-tension		belt	(refer to	Page
		18).
	4. V-belt is worn.	4. Replace belt.
	5. Pulley is loose.	5. Remove pulley, replace with key as required, and re-
		install securely.
	6. Machine is incorrectly mounted to the	6. Make sure the mounting		hardware		is tight;	place
	stand, stand is incorrectly mounted to	shims under machine.
	the floor, or the stand is uneven.
	7. Chuck or cutter is at fault.	7. Replace out-of-round chuck, replace or resharpen cut-
		ter, use appropriate feed rate and cutting RPM.
	8. Motor bearings are at fault.	8. Check bearings, replace		motor or bearings as
		required.
	9. Spindle bearings at fault.	9. Replace bearings.

Mill/Drill Operations

Symptom	Possible Cause	Possible Solution
Drilling stops, but the motor	1. The belt is loose, worn, or broken.	1. Replace or adjust the belt.
still operates.	2. Bit slips in chuck.	2. Tighten bit; inspect bit for burrs or other obstructions
		that might interfere with clamping surface.
The chuck wobbles or is	1. Foreign material is stuck between the	1. Remove the chuck, clean, and de-burr the tapered
loose on the spindle shaft.	chuck-to-spindle mating surface.	chuck and spindle mating surfaces, then reassemble.
	2. Damaged chuck.	2. Replace.
The spindle does not retract	1. The quill shaft is gummy with sawdust	1. Clean shaft and lubricate with a light coat of oil.
completely in the upper-	and oil.
most position or it binds.	2. The quill lock is locked or not fully	2. Fully release the quill lock.
	released.
	3. The feed shaft return spring is weak.	3. Increase the feed shaft return spring tension.
The quill has excessive	1. The quill bearings are worn or dam-	1. Replace the bearings.
deflection.	aged.
	2. The quill shaft is at fault.	2. Replace the quill shaft.
Drill bit wobbles, holes are	1. Drill bit installed incorrectly.	1. Remove drill bit and reinstall.
oversized.

Model G0517 Mill/Drill -27-