Use a bearing puller if you have one to get the old bearing off the armature, otherwise see the video on bearing removal on the eReplacementParts website. A rubber ring rather than a retaining clip is used to hold the bearing and armature assembly against the rear motor housing and the old ring, being black, can be hard to see in the dep
... Read moreression in the motor housing. It may still be usable but it\'s probably better to install a new one in case the old one got torn up when the bearing failed. Install the new rubber ring, seat the bearing using the socket/mallet method (see video) and press the rear motor housing against the main housing enough to get the screws started. Torquing down the screws will draw everything snugly together. When you first start the motor, there may be a smell of burning rubber because the moving parts of the bearing may rub for a few seconds against some of the rubber ring, but this won\'t last very long.
1.) Bosch 4000 Table Saw w gravity rise stand. Removed blade and then table saw from stand (4 bolts)
2.) Turned table saw upside down and removed plastic table support frame from cast table to access motor (4 allen-head cap screws & 2 small bolts).
3.) Removed brushes (2)
4.) Removed motor end cap (3 screws) to expose re
... Read morear motor bearing and wiring to motor field
5.) Removed motor housing from cast gear box/blade support (4 screws). Armature remained in gear box.
6.) Removed armature by pulling out of gear box and front bearing
7.) Removed front bearing retainer (2 screws) and removed bearing with inside puller. Replaced with new bearing and re-attached retainer.
8.) Removed rear bearing by cutting off with dremel and cutting wheel. The outer bearing had fallen off with ball bearings so only inner race remained on armature shaft and nothing for puller to grab to...so had to cut off.
9.) Replaced new bearing on shaft and cleaned armature with damp rag and a little brake cleaner.
10.) Removed wire nut caps from field wiring and rear motor cap (which contains speed control board). Removed 2 bolts that held field in motor housing. Removed field from motor housing by tapping out from rear.
11.) Replace with new field. Reattached wire nuts and tightened 2 bolts.
12.) Added grease to armature shaft gear end and reinstalled cast gear housing/blade support.
13.) Reassembled saw in reverse order
14.) Replaced saw blade
15.) Plugged in and ran like new. Parts for $100 saved my $600 table saw. Tool retailers wanted $300 minimum to begin repair which would be used towards the final repair bill. Glad I did it myself, but you should have some mechanical and electric motor knowledge and able to keep parts in order during disassembly.
Read less
Did you find this story helpful?
Thank you for voting!
Loud, high-pitched squeal, then motor would not start after cooling down
I surmised a bearing issue and validated my idea via internet searching for Bosch T-4000 table saw maintenance, finding several articles on bearing, brush, armature, and field replacement, but no articles on performing bearing lubrication or maintenance. e-Replacement had very good diagrams of the saw and saw motor, so I removed the motor
... Read more and found the bearing on the commutator end of the armature badly burned and rough, the rubber ring melted and the end of the motor housing melted. I ordered the parts and when they arrived, I replaced the bearing, rubber cap that holds it securely in the motor housing, the housing itself, the brushes (even though they looked to be in fairly good shape and just slightly chipped on one edge), and transferred the necessary parts from the old housing.
The armature and the field both had a thin layer of the melted rubber ring and the melted end of the housing over much of their metal surfaces which I carefully sanded off with very fine Wet-or-Dry sandpaper (armature and commutator) and a cylinder hone (for the field).
The hardest part was fitting the motor housing end cap back onto the motor housing due to the very limited space and getting the wires and butt-joints into their exact locations so that the cap fit back on and seated into place. I used an old bicycle spoke to prod the wires and butt-caps into place to get everything aligned. Take a picture, take notes, or make a drawing of how the wires fit in the cap if or when you remove it from the motor housing to save yourself the time it took me.
I have now ordered the other 3 bearings in the motor, though the rest seem okay and I was able to carefully pry out the seal from the other armature bearing and refill it with grease before putting everything back together.
I will also try to seal any excess holes in the housing for the vacuum port so that I can keep the motor cleaner. I will also always connect a vacuum hose from my Dust Deputy and shop vac when using this saw to keep sawdust out of the motor.
Read less
Did you find this story helpful?
Thank you for voting!
The rear bearing on the armature seized and the resultant heat melted a section of the motor housing causing the table saw to lock up.
Bosch 4000 table saw repair. Remove the rear motor housing (3 Phillips screws) then uncrimp the 3 wires attached to the field winding/carbon brushes. The next step is to remove the four phillips screws that hold the motor housing to the inner gear box. Pull housing towards you to remove. I used a gear puller to remove the bad armature b
... Read moreearing, then proceeded to degrease and clean the armature with electromotive cleaner. Reassembly is the reverse of disassembly.
Read less
Did you find this story helpful?
Thank you for voting!
The motor tried to run but couldn\'t. It just mostly growled.
I took the table saw off of the stand and turned it upside down. At first I thought it was just the brushes and when I took the old ones out they were not worn down but were chipped off at the contact end. So I checked the bearing and sure enough it was seized up. Ordered an new one and a rubber ring. I took the back end of the motor casi
... Read moreng off and used a bearing puller to get the old one off the shaft, put the new one on and put it back together. simple and took less time than it would have taken to take it in to a repair shop.
Read less
Did you find this story helpful?
Thank you for voting!
Front Bearing in motor blew up. I replaced both bearing even though there was nothing wrong with the rear bearing.
Rick from Newalla, Oklahoma
4 of 4 peoplefound this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Nutdriver, Pliers, Screw drivers, Socket set, Wrench (Adjustable), Wrench set
1, Removed end cap from motor
2. Remove outer plastic case.
3. Removed plastic blade housing cover.
4. Removed front metal gear assembly cover.
5. Removed Armature from gear housing.
6. Used bearing puller to remove front bearing
7 Used Large 1/2 drive socket to install new bearing
8 Removed & re
... Read moreplaced front rubber ring seal
9. Remove and replace rear bearing.
10. Cleaned gears and housing.
11. Repacked axle grease around gears, bearing and inside housing
12. Reassembled in the reverse order.
Note: The hardest part of this is reinstalling the two screws that hold the armature assembly to the front gear housing. There is a metal plate that the two screws that go through the housing into the metal plate on top of the armature. That plate is free-floating and there is about a 1/4\" of clearance between the housing and the plate and the top of the armature assembly. Gravity is your enemy trying to get the plate and the screw to line up because there is NO room to put a screwdriver tip or anything inside the space. I tried for over an hour to get one of the screws started again with no success. Finally I went to my screw bin and found a 2\" screw the same size and thread pattern as the original and use my scratch awl to line up one side of the plate to the hole. I use the long screw in the opposite side of the plate to temporarily screw it in and bring the plate to the top, where it was supposed to be, then removed the scratch awl, and put in one of the original screws and tightened it. Then I was able to remove the long screw and put the other original screw in the other side. After that was done I tightened both of the original screws and and rest took about 15 minutes. Maybe this will help someone else in doing this bearing replacement?
This repair was on a Bosch Model 4100 table saw, which by the way is a GREAT saw!
Rick
Read less
Did you find this story helpful?
Thank you for voting!
Saw ran at real slow rpm , no way it would cut anything
Removed motor from saw , disassembled motor, removed brushes, removed field from housing, installed new field, new armature, new speed control, new brushes . Installed motor in saw, reconnected on /off switch, plugged it in and turned tool on and bam! It worked !
1. Removed the bearing.
2. Cleaned out the armature.
3. Installed the new bearing.
4. Installed the new brushes.
5. Installed the new motor cover/casing.
Did you find this story helpful?
Thank you for voting!
Table saw lost power and sparks were coming out of the motor
I was hoping replacing the brushes would do it. I found some at a local repair business and replaced them but had the same problem. They told me to check color of armature, if it was dark and not shiny the cost to fix would be to much and might as well buy a new saw. They were wrong. I spent a little over $200.00 instead of $600+. They se
... Read morell tools too, Looked on ereplacementparts site and followed the instructions that someone else put on the site that had the same problem. He did a great job of explaining everything and I followed his instructions and took my time so I didn\'t mess up or forget something. My table saw is working great!
Read less
Did you find this story helpful?
Thank you for voting!
Bearing at back of motor had overheated and fused to the armature
1. Removed plastic base and main switch
2. Removed saw blade arbor, Arber lock and Spur gear.
3. Removed motor brushes, housing and armature
4. Pressed new bearing on armature and slid rubber boot over bearing.
5. Assembled in reverse order of disassembly.
Did you find this story helpful?
Thank you for voting!
< Prev
1
2
3
Next >
Model Cross Reference
This part works with the following models:
ERP Number: ERP19512517
Manufacturer Part Number: 2610911928
This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
✖
Mail-In Recycling Rebate
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
