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

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Belts on my Makita beltsander keep ripping at the joint despite proper belt instalment

I have been sanding for a short period and my new belt ripped at the joint, this happened 4 times over. I do know how to install the belts, I am a cabinetmaker by trade and have been using Makita belt sanders for years!

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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rowdy45176
  • 2176 Answers

SOURCE: The belts on my Makita 9304 belt sander are wearing unevenly

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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  • 10865 Answers

SOURCE: Putting Sanding paper on makita sander

A makita power planer is just what it says, a planer. It has blades that spin at high speed and remove a thin layer of wood with each pass. The orbital sanding sheets go on another tool called an orbital sander. Write back if you find the sander and can not figure out how the sheets go on it.

Posted on May 02, 2009

heatman101
  • 43501 Answers

SOURCE: My Makita 9901 belt sander is used but very

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

Posted on Aug 31, 2010

  • 1 Answer

SOURCE: new rubber drive for makita 100 mm belt sander

WENT TO RUBBERMAN IN GEORGE AND FOR R20.00 THEY REPLACED THE RUBBER ON THE DRIVE WHEEL-BEATS PAQYING THE THOUSANDS FOR IMPORTED SPARES.G

Posted on Sep 30, 2010

pst4911
  • 41 Answers

SOURCE: my makita 4"X24" sander makes

http://www.ereplacementparts.com/makita-9404-belt-sander-parts-c-97_103_535.html

I would say you have a bearing going out ether on the motor this web address will take you to a good break down of the housing I would say you need a motor bearing it will also give you a parts # but if you have a bearing supplier somewhere ( I look in yellow pages for electrical motor repair) you might find the bearing for a cheaper price just remember to take the old one with you so you are sure to get the same size. I have found bearing and belts for my table saws are the same as for some clothes washers for about 1/2 the price as ordering from sears
good luck
Pat

Posted on Oct 29, 2010

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I have a Makita belt sander,just replaced belt tensioner system including springs and roller but belt drive roller still keeps stopping on relatively light load even though the motor is running


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The sanding belt on my Makita 9403 keeps breaking at the glued joint after only 5 minutes of use. Have fitted a new graphite pad, but this has not resolved the problem. Am using genuine Makita sanding...


Hi,

They will do that if you install the belt in the wrong direction...

Check the arrows on the inside of the belt and make sure you are turning the belt in the right direction...

Otherwise check a different brand of belt...some of them out there are ****....

heatman101

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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

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1 Answer

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Jan 06, 2010 | Bosch 1274DVS 3" x 21" Belt Sander

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The belt keeps slipping off the rollers


Generic comment:

There should be a knob on the side away from where you put the belt on to adjust the front roller. When properly adjusted, it should run true.

On the other hand, yours may be an auto adjusting. If this is the case, yours is sticking and probably needs cleaned. (though freshly released from the reconditioning shop, id exect it to operate properly). Id suggest you visit the Makita web site and look for a operator manual. Another resource for you to check is www.archive.org

You may have some recourse to the manufacture if you JUST got and it is not right. Might be worth a e-mail to them too.

Good luck with your new sander.

a

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1 Answer

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Obviously have to take a close look at pulley conditions & alignment, as well as tensioner. While the belt is off, check each pulley by trying to spin it for excessive resistance, and or movement, side to side, up & down, feel for grinding like indication bad/dry bearing. Try applying a little force in direction that belt would when it's on, as you rotate pulley, as it may only show or feel it when force applied. Remember, when you accelerate, crankshaft pulls harder on that belt & if tensioner isn't keeping proper tension on at all times due to partially seized or weak, it will allow belt to loosen up & bounce on opposite side from pulling.

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