transmission type id from serial number

Could someone tell me what this number means on a auto trans from an early 80's w123?
123 270 701 722 122 02 103362

is this a 722.1, 722.2, ...or what?

This is number on a paoosible spare I may acquire - where do I find the serial number on my ransmisison?
Stev

[engatwork]

Looks like a 722.1 to me.

[dmorrison]

The tranny number looks like a 722.122
look on the lower passenger side of the tranny. Just above the trannsmission filter pan.
My 83 240D number is
722.117 02 0070232

This is a 722.117 tranny serial number 0070232

Look for a number like this on your tranny.

[Eric Eliel]

If you still have the owners manual with the computer printed factory info sheet (inside back cover), its listed in there. No need to crawl under the car. Unless your car has been "tinkered" with.

COuld someone explain the fundamental differences between the 722.1, 722.2, ...?

Are they compatible in terms of physical dimensions or do I need to replace a 722.1 with the same type ?

Steve

[rs899]

What car/tranny do you have now? I can tell you that the 722.1 and 722.2 cases are the same(4-bolt pan, separate bellhousing), but the internals may be different. Case in point I have an 80 300SD (722.120) that needs a tranny. I am going to attempt to swap a 722.112 out of a 77 280SE. These are both 4 speeds, have a vacuum modulator and a mechanical rod from the throttle. I was about to snatch a 722.1xx from an 80 300D, but I finally noticed that it didn't have the rod. From what I can tell on mine , the 722.112 and 722.120 are both 4 speeds, and have the same physical characteristics. I checked with Jaggi, a transmission rebuilder, and they think this swap will work. There may still be some subtle differences, though, such as in the valve bodies, but I was told it should work well enough.

Your situation may be different. I wish there was more "swap" data out there, but I haven't found much.

I just spoke to the dealer & my car should have a 722.405 transmission & in their opinion a 722.1 would not work/fit!

I agree, A site explaining differences & compatabilities would be useful.

Steve

[rs899]

We might be able to help you better if you would tell us what car you have.

It's a 1983 300TD. I had option on a spare transmission & am trying to determine what type of 'spare' would be compatible.


Steve

[rs899]

Hmmm- how did we let one of those escape across the pond?

I have a 300D turbo (sedan) that has a 722.315. I should think that would work in yours- but I'm not sure what all your options are in UK. I would think a (1)4 speed that (2) starts in 1st gear (3)with a Bowden cable (4) a modulator and a (5) 6-bolt sump SHOULD work. There may be some gassers that would work.

This Polish website, if you manupulate it, has some very good transmission data. I was able to glean some general data about my swap problem from there.

http://macmerc.netium.com.pl/index.html