Question about Makita 9404 4'' x 24'' Belt Sander

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The belts on my Makita 9304 belt sander are wearing unevenly

The belts on my Makita 9304 belt sander are wearing very unevenly. Have adjusted tracking but problem still persists. Any ideas?

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Check the wear plate on the bottom and also check the front roller for being out of round is where I would start. Let me know if doesnt help

Posted on Feb 18, 2009

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Can the tracking on the sanding belt on the B&D belt sander 5.2A be adjusted?


yes ther should be a knob on the top front roller (top side) this should affect tracking , also make sure tension taker (lever for changing belt) Is fully off so that belt gets its full tension , if the belt doesnt get full tension it will walk side to side

Sep 22, 2014 | Sanders & Sanding Blocks

2 Answers

The sandpaper works its way off the machine almost immediately after turning machine on. We already checked to see if the paper was the right size. We also made sure the tightening lever was secure.


If this is a belt sander then they have a tracking adjustment knob. You will need to adjust it so that the belt stays on and doesn't want to walk off.

Jul 13, 2011 | Makita Sanders & Sanding Blocks

1 Answer

My Makita 9901 belt sander is used but very slightly and now is just frustrating to even use. What is the most common cause for tensioning roller to keep pulling the sanding belt over against the housing?...


Hi,
There is a screw that changes the angle of the roller to change the tracking of the belt... this is very sensitive and probably if you are having trouble is more a reflection of the belt quality then the sander...try different belts before you toss the sander... I have had one for years and love it... although the belt tracking is tricky sometimes anss your have to keep after it...
The adjust ment is very touchy only turn it maybe 1/8 turn at a time...

heatman101

Aug 31, 2010 | Makita Sanders & Sanding Blocks

1 Answer

After installing new belt, on Porter Belt Sander 352VS #6 the belt drifts of to one side until it comes completely off. How do I stop this?


There is a tracking adjustment knob on the side of the sander--adjust one way or the other until it tracks properly. This is something that will change by itself as the sander is being used--check periodically.

Feb 13, 2010 | Porter Cable 362 12 Amp 4 Inch By 24 Inch...

2 Answers

Brushes on my sander are wearing out within 10mins


the armature could be the problem, when you replace them do you notice a lot of arcing around the commutator, it might be bad or just need to have the surface cleaned. let me know.

Jan 22, 2010 | Makita 9404 4'' x 24'' Belt Sander

1 Answer

Belt will not tighten small round spring come loose do not no where it goes


Usually there is a knob with a screw imbedded with a spring around it that screws in and adjusts the "tracking" of the belt so it doesn't run off the side of the rollers. If you lose that screw, then teh belt will come off quickly.

At this site, look at part # 68, 69, and 70

http://www.ereplacementparts.com/makita-9403-belt-sander-parts-c-97_103_113.html?osCsid=l052ctaa4vsu2817buk99qpop2

Jan 15, 2010 | Makita 9404 4'' x 24'' Belt Sander

1 Answer

Sanding belt will not stay in line. Slips over to the inside.


There is an adjustment screw on the side of the sander that aligns the belt. Mine has a black plastic knob on it. If adjusting this does not help, remove the belt and check to see if it is making contact with the belt roller frame. The screw on mine was too long and I had to shorten it on a grinder. If you do this, take only a little at a time, a small adjustment will move the belt quite a bit.

Aug 16, 2009 | Makita 9404 4'' x 24'' Belt Sander

1 Answer

Tool Shop Belt sander - can't align belt tracks to thee inside


The problem is that you have not set the adjustment properly. Back off the adjustment screws,slide on the belt and center it over both rollers, addust a little at a time both screws, after belt begins to tighten up stop adjusting. Turn the power switch on for about 1 second. Is the belt tracking? Adjust as necessary. Try the power again for longer and longer periods untill belt tracks in the center of the rollers. Tighten nuts to keep adjustment screws from backing out.

Jun 12, 2009 | Sanders & Sanding Blocks

1 Answer

Belt sander-belt coming off in use.


Have you tried adjusting the tracking slightly to the opposite side to which the belt comes off this has worked for me on my Bosch

Apr 19, 2009 | Makita 3 x 24" Belt Sander

1 Answer

Slipping belt


OK the belt tensioning mechanism is spring loaded. First what is the quality of the belts are they real flimsy or stiff. You say the rollers spin but my question does the rear roller still spin and the belt remain stationary. If so the rubber belt on motor is bad. I would take a look for excessive wear on the rear roller. Does the yoke mechanism snap forward or move slowly, look for a build up of sawdust in this area that might be restricting movement on the yoke. The wear plate in still good condition. One other thing on the belts are they directional? Do they have an arrow on the inside if so that has to point toward front of tool. I looked at a breakdown and could not see anything else to suggest. I never had this problem except with belts when I was at Makita.

Jan 18, 2009 | Makita 3 x 24" Belt Sander

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