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★★★★★
★★★★★
Good product, exceptional service & quick shipping, thank you
Guest - April 24, 2019
Verified Purchase
★★★★★
★★★★★
Small part, great customer service
The whole transaction was smooth and successful. The brushes came promptly and fit perfectly.
Guest - September 30, 2019
Verified Purchase
★★★★★
★★★★★
Best in the business!
Fast shipping, the right parts. What more can you say?
Julie - November 14, 2019
Verified Purchase
★★★★★
★★★★★
Bosch saw lives on
Replacement brush set for an old job-site saw helped me extend the lifespan of a tool that I'm reluctant to replace because it has features the newer models lack.
Guest - January 18, 2020
Verified Purchase
★★★★★
★★★★★
Very Easy Repair
OEM brushes for our Bosch chop saw less than a 5 min repair saw is like new
Guest - July 28, 2021
Verified Purchase
★★★★★
★★★★★
just the parts I needed
If you need parts this is the place to find them. My table saw is over 20 years old and you had the parts I needed.
Guest - August 2, 2021
Verified Purchase
★★★★★
★★★★★
Good service
Tool now working well
Guest - December 29, 2021
Verified Purchase
★★★★★
★★★★★
Bosch table saw repair
Great and easy company to deal with. The only place I go for parts and never let down.
Guest - January 10, 2023
Verified Purchase
★★★★★
★★★★★
Easy repair
Arrived quickly, whole process very smooth
Guest - May 8, 2023
Verified Purchase
★★★★★
★★★★★
great part
The brushes arrived in a timely manner and were just right for my saw.
Guest - May 12, 2023
Verified Purchase
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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.
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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.
I tried the speed control circuit board first and while difficult to stuff the wiring for it back under the motor\'s end cover, It didn\'t help to fix the problem.
Next I ordered the field and a set of brushes. The armature looked fine but I still sanded it down and cleaned the slots between the bars w/ a brass wire \"tooth\" brush
... Read more. The field was a very tight fit and difficult to pull from the plastic motor housing. And then, even harder to press back in and have the mounting holes be orientated correctly for the screws that went thru them. I finally took some 150 grit sand paper to the12 support fins in the plastic case and shaved them down just enough so the field would slide into its home a little more easily. All is well now. For $115, I have a mostly new table saw motor, which works like it used to. A local repair shop wanted 3 or 4 times that for parts and labor. Glad I tried to fix it myself.
With Table saw upside down, tilt saw blade to 45 degrees. Remove switch wire-stop where wire enters motor housing. Remove motor housing. Uncrimp wire connections with channel locks. Unbolt field and remove. Reverse order re-assembly, making sure new field wires exit internal motor housing together through access hole below the spinni
... Read moreng rotor of the motor. NOTE: Internal plastic splines of motor housing had to be sanded down in order for new field to slide into housing. NOTE: New brushes cause minor intermittent voltage drops until they wear down into the shape of the motor rotor.
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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.
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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!
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.
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.
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