4-Prong Socket for 722.120 Output Yoke:
 

Anyone have a part number for this??? I had one but it never came home after being loaned...

The AST tool I have is MB part number equivalent 115 589 08 07 00.

Works great on that flange nut.


.

That's strange I have nearly the same number

915 589 01 07 00

replaced by

115 589 01 07 00

Found here on startek

amb





http://www.peachparts.com/shopforum/tech-help/296938-722-118-transmission-rear-4-pronged-slotted-nut-special-tool.html


I decided not to buy it in the end 'cos I didn't want to shell out yet another 120 euros on a socket to undo those old nuts. The new ones come in a 12 point form - so why bother with the old?

I'm a tool junky. That's why I have it. However I did use it like four times already and I used it on a 716.210 to remove the flange nut couple days ago.

Here's what the 115 589 08 07 00 looks like.
http://www.peachparts.com/shopforum/...1&d=1365146865

Different look at the body than 115 589 01 07 00 that you posted.

http://www.peachparts.com/shopforum/...1&d=1365147209

Well thanks for the feedback - I'm now unsure if the socket I found on startek is actually the right one...

...the description seems good - I'll put a warning in that thread I started just in case I'm unknowingly steering people in the wrong direction.

Looking at the samtag website,
Mercedes Tools - Mercedes Benz Special Tools & Repair Information-Tool

The 115 589 01 07 00 has the dimensions of
A = 41.50mm B = 35.00mm C= 7.50mm

The 115 589 08 07 00 has the dimensions of
A=42.50mm, B=35.25mm , C=5.50mm

http://www.peachparts.com/shopforum/...1&d=1365147692


They are both pretty close in size.

.


.

Wow that's strange - very similar - but obviously not going to fit if you get the wrong one.

It seems as though there were two generations of these slotted nuts...

...unless the information on startekinfo is wrong. For the socket I found it does say

If I remember correctly this slotted socket is nothing like the size on the rear wheel hub (W114/5/6 W123 W126)

I think I've worked it out now.

Putting the 115 589 08 07 00 into startekinfo you get this

amb

Which specifies

Definitely for the automatic transmission.

The other one I found must be for manual transmissions. Is that a good assumption?

Definitely different. 115 589 02 07 00 ---
A=54.75mm, B=48.25mm, C=7.25mm

http://www.peachparts.com/shopforum/...1&d=1365148929



.

Not so sure. I used the 115 589 08 07 00 on a four speed manual couple days ago.


Here is what Samtag states on their ad.

But I've used the 115 589 08 07 00 on a diff also and it works. :confused:


.

Thanks,

That's what I will need to swap out my rear trans seal, which has decided to weep a bit....

So, the replacement nut comes in simple 12-point???? because I ordered a new nut, washer and seal from my MBZ dealer for only $9.75 USD, but haven't seen it yet. What size 12 point????

I didn't get mine from the dealer - I bought it for about the same price as you from a transmission re-builder - so I can't say for sure that the MB supplied part will be a 12 point nut...

...however, if it is you'll be scrabbling for your 32mm 12 point socket - then you'll need to go and order a deep 32mm 12 point socket 'cos a short one can't be driven with the output shaft sticking through the back end of the socket!

I think this is the same 30mm nut for the differential. I didn't see a difference and it shares the same thread.


Edit: I don't think 32mm is correct. I do know a 30mm socket fits the nut.

Don't waste money !!
 

I chisel the old nut off.

The replacement nut is a metric 12-point.

There is no logical reason to buy a tool you will use once to remove a discontinued nut.


.