New August, 2025. Introductory sale. This transmission overhaul tool set is custom-modified here in our shop at MercedesSource. We make it to order, and it is time-consuming. Please allow up to 5 weekdays before it can be shipped to you. It contains five tools. Watch the YouTube video below to see Kent demonstrate each one. Below the video, we will include a picture of each tool in action.
Product Details
B2 piston seal and sleeve removal tool. You do not need to remove the pan or the brake band.
B1 piston removal tool. This is under a lot of spring tension.
Output shaft heavy spring clip removal and installation tool. You will fight it any other way!
Custom modified screw driver to get under and remove the c-cips ( and there are quite a few).
Adjustable press to remove the pistons in the K1 and K2 for resealing (also under heavy pressure)
PLEASE NOTE: We do not include the 30mm socket or the bowden cable tool in this tool set as you may not need them but we offer them separately. You can also purchase the B1 and B2 tools separately if you do not need the entire tool set. Please see related products below,
Related Products:
1981 to 1985 722.3 Turbo Diesel Transmission Bowden Cable Removable Tool
Also works on 380SL and 560SL transmissions. Before you think you can easily remove the Bowden cable from the transmission, watch the video below.
1981 to 1995 722.3 722.4 722.5 New Transmission Pan Replacement w/ Magnets
These transmission pans get "out of shape" due to over-torquing the bolts. That crushes the stops (see below), and when that happens, it is very hard to get the pan seal not to leak. Your best option if you are doing a transmission service is to replace the pan.
722.3 722.4 B1 Piston Removal and Installation Tool
The B1 piston assembly is not easy to remove and then reinstall. Because of the length of the two big springs behind the cover, it takes a tool that has a long throw.
722.3 722.4 B2 Seal/Sleeve and Front Pump Removal Tool Kit
We modified this slide hammer puller set in our shop so it will work in removing two key components in the 722.3 and 722.4 automatic transmissions. Getting the B2 piston and sleeve out of the case can be a real bear without this tool. With it, it comes out quickly and easily.
722.3 722.4 Upgraded B2 Piston Replacement Kit
We are learning, as others are, that these parts are becoming a HIGH preventative maintenance item on these old transmissions. A broken or binding B2 piston causes many shifting problems, and as Kent found on his 300E, it destroyed the transmission.
722.3 Complete Overhaul Gasket and Seat Kit
Take a very close look at the picture. These are all the gaskets and seals you will need to replace if you open up your 722.3 transmission that was produced from 1981 to 1995 for all 6 and 8 cylinder passengers cars that had a displacement of 3.0 liters of more.
722.3 Transmission Rear Shaft Nut Removal Socket.
You will need a 12-point DEEP socket. That is the only thing that will work. Most impact sockets are six-sided. The best way to remove this nut is with a big impact wrench with the transmission locked in park. So you will need a quality heavy-duty socket. This one is made in the U.S.A.