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rebuild Dynabrade sander?4/9
Do Dynabrade random orbit air sanders need to be rebuilt? Mine does really good when I drop 2-4 drops of Marvel air tool oil in it but then the sander slows down pretty quick. It is about 6 years old.
It is a Dynabrade 69020 5" Silver Supreme sander.
My 3 dynabrades will bog down a bit every few months despite regular oiling. When that happens, I shoot a healthy dose of WD-40 into them and then let it run for minute. This seems to clean out the insides and they run good for a few more months.
I'm not an expert on when they should be rebuilt, but yes they do wear out. We rebuild ours usually every year or two. One full time sanding guy, with helpers when he gets behind will make them work.
I've done what Duster said--- hose it out with WD40, which has helped with all but one sander.
At the time I was too swamped to rebuild one, and I didn't particularly care for the model that was "boggy" so we retired it and bought a new one.
Their new line of teal "Makita colored" orbitals is exceptional. I only have one at the moment, and it's lighter and has a lot more torque than most of my other ones.
Yes you can and should rebuild them.
I have questions for the people that are running WD-40 through them. Do you have filters on your pressure regulators. Is your air dry and clean?
Our air is exceptionally clean and dry, it really makes a difference. It takes a bit to set up a good compressed air system but we have a significant investment in equipment and I would not want to run dirty wet air into that equipment.
Do you guys take off the filter element on the exhaust before you squirt WD40?
Yes, our air is filtered and dried. I don't normally take off the filter on the exhaust when I flush out these sanders, but it wouldn't hurt to do so. Sometimes the button that pushes the palm lever up gets stuck, when that happens I take it apart and flush those components out too.
I have had these rebuilt before, but I don't think I'd do it again. With parts, labor, shipping to & from the service center, you're only about $20 bucks short of the cost for a new sander.
I had one go down and my Klingspore salesman stopped by with a new motor and a special wrench, he put the new motor in in about five minutes, $90.00 and he was gone. Although that was 6-8 years ago. Spoke too soon I think it bit the dust again yesterday.
So i had squirted wd40 and it basically acted the same. I did not remove the exhaust filter element when i did that. Today i did remove the filter and guys it was solid and packed with oily hardness it was so dense!! No wonder the sander was not keeping up speed...The exhaust was blocked!!! So now i just need to call Dynabrade and hope they sell exhaust filters.
Boom...A package of 30 filter inserts to my door for $18.99 from ereplacementparts and the sanders including an old Porter Cable air sander run like brand new. Dynabrade part number 56054. Wish i would have known about this years ago.
just ordered 30 thanks