Grizzly G0450 instruction manual Reduce rear pressure roller pressure

Symptom	Possible Cause						Possible Solution
Grinding, screeching, or rubbing noise	1. Drum bearings lack sufficient grease.						1. Grease the pillow bearings (Page 26).
when sanding drums are powered up.	2. Drum bearings are worn			and		need	2. Replace the drum bearings.
	replacement.
Short V-belt lifespan.	1. Pulleys not aligned correctly.						1. Align pulleys (Page 31).
	2. Improperly tensioned.						2. Properly tension V-belts (Page 30).
Machine lacks power; drums stop turning	1. V-belts loose.						1. Tighten V-belts (Page 30).
under load.	2. Too much pressure on pressure roll-						2. Reduce pressure roller pressure (Page
	ers.						36).
Conveyor slips under load.	1. Conveyor is too loose.						1. Tension conveyor (Page 32).
	2. Too much load.						2. Decrease load.
Conveyor tracks to one side; conveyor	1. Conveyor tracking is incorrect.						1. Track the conveyor so it runs straight
hits the roller cover.							(Page 32).
Workpiece pulls to one side during sand-	1. One of the sanding drums is not paral-						1. Adjust the	sanding drums		parallel to
ing operations.	lel with the table.						the table (Page 33).
Excessive snipe.	1. Too much pressure from all the pres-						1. Reduce pressure roller pressure (Page
	sure rollers.						36).
	2. Too much pressure from the rear pres-						2. Reduce rear pressure roller pressure
	sure rollers.						(Page 36).
	3. Lack of outfeed support.						3. Set up outfeed table or have someone
							catch the workpiece as it comes out.
Workpiece kicks out of sander.	1. Not enough pressure from the pressure						1. Increase	pressure	roller	pressure
	rollers.						(Page 36).
Sandpaper tears off drums during opera-	1. Nail/staple in workpiece.						1. Sand only clean workpieces.
tion.	2. Sandpaper	not tightened		or	fastened		2. Install the	sandpaper	correctly (Page
	correctly.						24).
	3. Drums not	perpendicular		to	the	feed	3. Adjust the drums perpendicular to the
	direction.						feed direction (Page 33).
Table elevation controls are stiff and hard	1. Table lock is engaged.						1. Disengage table lock.
to adjust.	2. Table lift screws		are dirty or loaded				2. Clean and	regrease	table	lift screws
	with sawdust.						(Page 27).
	3. Chain idler	roller	sprocket		lock	nuts	3. Adjust the lock nuts on the idler roller
	have been tightened against the roller.						sprocket so the roller can spin freely.
	4. Elevation handle worm gear is dirty or						4. Remove the worm gear box, clean it,
	loaded with sawdust.						and regrease it.
Poor dust collection.	1. The dust scoops are incorrectly posi-						1. Experiment with the dust scoops moved
	tioned.						further in or out for better results. See
							Page 37 for instructions on moving a
							dust scoop.
	2. Dust collection lines incorrectly					sized	2. Use at least an 8" main line with two 6"
	for this machine.						branch lines that each Y into 4" at the
							machine.
	3. Dust collector underpowered or too far						3. Upgrade your dust collector or decrease
	away from this machine.						the distance from the dust collector to
							the machine.

G0449/G0450 37" Drum Sander -29-