I have a 4000-n -rt table saw. I bought this saw as a reconditioned saw. Lately I've been hearing this squealing noise when the saw is running and when I shut it off. I think its a bearing but I'm not sure which one . Can you give some guidance on what to do. I'm mechanically inclined and I didn't want to tear it apart without knowing which way to go.
I would agree that it is likely a bearing. It could be any one of the bearings in the saw. The only way to find it will be to disassemble the saw and inspect the bearings. There will be quite a bit of tear down to replace the bearings. I think if it were my saw I would replace all of the bearings. If one went bad the others probably are not too far behind it. There are two armature bearings. They are part numbers #2610911928 and #2610911927. There are two more bearings on the blade shaft. They are part numbers #2610996949 and #2610997210. All of these parts are available from http://www.ereplacementparts.com.
I hope this helps with your repair!
-Mark
Motor running opposite Question by Ben 11/13/2009
The wood clipped my blade. The motor now sounds forced and is running in opposite direction. Please Help
We have run into the same problem several times with the Model #4000 tablesaws. We have always found the problem to be with the field. I would bet that a new field would solve the problem. The field is part #2610996867 and is available from http://www.ereplacementparts.com.
Good luck with your repair!
-Mark
table saw #4000 Question by joseph scalia 10/31/2009
When starting saw I notice a hesitation before power starts reaching normal operating speed. Could the soft start function have failed? Is that part of the on/off switch or is there a separate component that controls the soft start function that needs replacing?
I would suspect the problem to be the speed control. The problem is that there is really no way to test it other than to just install a new one. The speed control is part #2610997306 and it is available from http://www.ereplacementparts.com.
I hope this helps with your repair!
-Mark
Gear cover replacement Question by Steve 10/29/2009
Are the shaft and bearings a simple compression in the gear cover?
Yes, the shaft bearing does simply press into the bearing cover. The bearing is then retained by a snap ring, item #38 on page B of the diagrams...
Good luck with your repair!
-Mark
Speed Control? Question by jared 10/24/2009
The saw can still get up to full speed but it rarely does because of a "loose" connection. There are no wires that are hanging loose or anything, but you need to jiggle the wire where it goes into the motor to make it go for a second or two. The connections into and out of the controller are good so I'm guessing it's the controller itself. Is there any way to determine that or do I just have to start ordering parts until the saw works?
If jiggling the wires makes the problem go away I think I would start with wiring. It looks like there are several crimped junctions in the wiring. I would suspect a bad connection with one of them.
That would be my guess.
-Mark
defective motor Review by keith 10/04/2009
The motor on my 4000 just burned out after only a couple of years of occasional use. A motor repair specialist suggested I use his dumpster to get rid of it, because there was no way that I could justify the repair costs compared to a new Rigid on sale at $399.00 with a life time warranty.
Burned out motors are a common problem with table saws, often because people push material through the saw too quickly. It costs around $200 to replace the armature and field in the Bosch 4000 saw, or about half the price of a new tool. Definitely expensive, but it could be a worthwhile repair.
Can Question by Billd38 08/16/2009
I am unable to get my table to lock into place. The handle which operates the lock is putting up a lot of resistance. I have turned the saw over, cleaned it, blown out any saw dust, etc. and I still don't seem to be able to fix it. Any ideas as to what is going on?
This sounds to me like an adjustment issue. Item #118 on the parts diagram is the adjustment screw for the table clamp. I am guessing that it is currently adjusted too tight so the clamp can't lock.
I hope this helps!
-Mark
Motor Question by Brad K 08/11/2009
My Bosch 4000 motor just bit the dust the saw is 2 1/2 years old and looks brand new. I hardly ever use it. I checked the switch and the brushes all is fine, but it was making a loud noise just before it started to run at half speed. I then shut it off but it never turned back on. Where do I get a new motor?
Sorry to hear about your saw. The motor is not sold as an assembly but you can get the parts you need to repair it. You will want to take the motor apart and verify what part(s) failed. My guess is that you will need a new Armature, part #2610996866, and the field, part #2610996867. You will also want to replace the armature bearings, part #2610911927 and #2610911928, and the motor brushes, part# 2610997207. Check the motor housings for any melted plastic. If you find melted pieces they will need to be replaced as well.
I hope this helps with your repair!
-Mark
Bosch 4000 table saw Question by Joe 07/31/2009
My Bosch 4000 table saw's motor is making very loud noise, what part do I need to change??? Field, ball bearing, or armature??? please help.....
A loud noise is usually caused by bad bearings. However you will need to do a little investigating. There are bearings on both the arbor shaft and on the motor armature. You will need to first remove the armature so you can test the bearings on the armature independent from the ones on the arbor.
Hope this points you in the right direction!
-Mark
Love this saw Review by davidf 07/22/2009
I have had my Bosch 4000 for a long time. It is a great saw in every way. Strait, true cuts every time. It was a little on the expensive side for a table saw compared to some of the other brands, but like they always say: you get what you pay for.
We have several of these in the company. The saw is well designed with lots of nice features however the motors don't last. Sometimes replacing the tail bearing on-saw will fix it but when the whole motor needs to go out for rebuild it is a pain to remove. I would like to have a spare motor to swap into ailing saws to get them back on line in one operation but Bosch refuses to sell me one. The need to lock both the fence lock and the extended fence lock has caused a few dangerous situations when the one under the table was forgotten.
I recently had the tail bearing on the armature go bad. Because it had basically fried the seat where the bearing sits, I replaced the bearing, the rubber cup, the motor housing, and also got new brushes. When I finished and turned the saw on, it ran smoothly. I didn't use it right away but came back to it a few hours later to find that when I turned it on it quickly ramped up to warp speed. I immediately turned it off and came back to this forum. I read that either the speed control or the field (or both) would be the problem. I really can't see where something like the speed control could just "go bad" during the course of a few hours. Since I am rather new to this kind of repair, perhaps there is a kind soul out there to either help or put me out of my misery!...
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Hello,
I bought a new grip for the fence on my Bosch 4000 as the old one was missing when I bought it (used) Can somebody tell me the best way to remove the pin that held the old one in place? Thanks!...
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My saw started grinding and sparking in the motor today. I was going to pull the motor off, but could not figure out how:mad:
Can someone tell me the best way to pull the motor off so that I can maybe repair it. I could not figure out if you had to take the saw off the stand or take all the components that raise the blade up or down off as well.
I was hoping that all you had to do was take the blade off and take the four screws off of the motor and it would slide out:). that didn't work for me.
My saw siezed up on me the other day after years of pretty good abuse. I took out what appear to be the brushes (looked alright), and cleaned up everything with an air compressor. Too much saw dust, I should have kept it cleaner! I removed the blade, and cleaned up everything real good thinking I was about to tear it apart and I wanted everything as clean as possible to start. Noticed I had an outlet within reach of the saw cord and figured whats the harm, right? The saw actually started up perfectly. I turned it on and off numerous times, multiple days, and it kept turning on. Today, I went and got a new blade for it and after installing the blade, the motor got stuck again. When I turn on the switch, the blade won't budge, and the motor makes a humming noise that sounds so bad, I immediatly shut off the saw. I've read of this saw having a problamatic Field, but I'm not sure if it isn't a bearing or something else since it appears to be stuck. I removed the blade again and without the blade on, the motor seems to run fine. I'm sure I'll see more when I take it apart in a day or so. Anyone with similar experiences? Any help or insight would be greatly appreciated. Thanks,
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