different brake booster

[jireland2002]

Came across an interesting brake booster today on a '76 2002.  It is a single diaphragm unit but is about 3/4" smaller in diameter that the normal 2002 unit.  It is marked ATE T51 same as the regular 2002 units. 

[Steven Hage]

Not a Tii booster?

[02Les]

Here's one.

 

https://www.ebay.com/itm/MERCEDES-SL-ATE-T51-BRAKE-BOOSTER-W107-W117-/382254429157

 

[Conserv]

Yes, I believe there are multiple (perhaps many?) different versions of the ATE T51 booster.

 

The tii version appears to be Part Number (Model Number?) 3.6127.0301.4, as shown on these two different samples of original ATE stickers.

 

Regards,

 

Steve

 

Edited December 14, 2019 by Conserv

[Einspritz]

On 12/13/2019 at 10:09 AM, jireland2002 said:

It is a single diaphragm unit but is about 3/4" smaller in diameter that the normal 2002 unit.  It is marked ATE T51 same as the regular 2002 units. 

 

the T51 is used in Tiis and Ti (IIRC) and other six cylinder cars from BMW, but not the standard 2002, which has a different MC diameter. Mercedes and other cars used the T51 as well.

 

The 3.6127-0301.4 is paired with a master cylinder diameter of 23.81mm. from the catalog of complete units.

 

Also 3.2123-6802.3

 

Somewhere I have what those numbers mean but will have to dig further.

 

My rebuilder tells me it is a dual diaphragm design, and is made in several diameters 6",7",8" and 9".

 

Did you know that you are supposed to service / clean the filter under the accordion boot?

 

Of course we all do that.

 

HTH

[Einspritz]

So here's a bit more for deciphering the sticker:

 

03.61dy-xxxx.4 ➜ 30nnnn T51

 

Where, from Mercedes:

 

d =
2 = 6’’
3 = 7’’
4 = 8’’

5 = 9’’
6 = 10’’

 

and Y=

0 = Einfachgerät (simple)
5 = Tandemgerät (Tandem)

3 = Einfachgerät BA
8 = Einfachgerät BA
BA = Bremsassistent
Z = Zugankerbremsgeräte

 

My sources do not include a Y of 7, but I'll go with Tandem.

 

30nnnn is the "short number" for ATE, but is not on the sticker and I suppose is for the booster only, whereas 010186 is for the booster and MC as a unit.

 

I can't readily find the -xxxx.4 identification.

 

Show us your stickers in Brake Booster trivial pursuit!
 

[TobyB]

Alfa also used the t51 in the 164's, and maybe the Montreals...

 

I used to run track days with the local Alfa clubs when those cars

still lapped, and it was fun doing the parts- bin search for parts.

 

t

 

[Senna27]

Interesting info. I'm looking for a tii booster if anyone can help me out.

Edited January 28, 2020 by Senna27

[halboyles]

3 hours ago, Einspritz said:

Show us your stickers in Brake Booster trivial pursuit!

 

Here's a few.  

Alfa

Volvo

2000CS

 

 

[AustrianVespaGuy]

On 12/16/2019 at 3:16 PM, TobyB said:

Alfa also used the t51 in the 164's, and maybe the Montreals...

Wow, the Montreal, now THAT is one heck of a beautiful car.  Must have really been something else to see one of those running around the track! Sorry for the sidebar, now back to the original booster topic. . .

[Hernan]

Anyone tried or heard of someone that adapted one of those generic dual diaphragm 7' ones that are listed in Amazon/Ebay??. 

From the (poor) data available in the listings, the bracket mounting bolt pattern is different and, most surely, the rear pushrod would require to be modified. Given the lack of good old tii ones I was wondering whether this could be a way to go.