AdrianPuryear

Furthermore the 12 12 pan costs about $20-25 more than the 09 12 pan. Going to call the local dealership in a moment and see what the parts guy has to say about this. Maybe the new part the magnets were included and magnet wells were constructed? Just guessing here.

AdrianPuryear

I called and talked to parts guy. The newer pan number is the correct one (12 12 version). He said that the parts superceded the older versions and that the only gasket and filter he can get are the newer part numbers but would fit both models. He didn't have any clue as to the difference between them. If anyone knows of a person that could pull the newer pan and snap a couple pictures for comparison that would be great. Not going to buy a new pan if not needed. The part numbers referenced for the 09 12 pan are:

Pan: 221 270 09 12
Gasket: 220 271 01 80
Overflow Pipe: 251 271 00 97

The parts people would have given me the revised part numbers. Something just doesn't make sense on this as both the old and new pan are still available on most online sites.

Glyn M Ruck

I have posted this many times.

AdrianPuryear

Glyn - Not sure I follow. We are talking about the 09 12 pan and the even newer than that pan the 12 12 pan. Nothing is referenced to the even older pan (pre slope and black standoff).

AdrianPuryear

Rodney - Do you know the part numbers for the torque converter drain plug and sealer ring? Thanks.

Glyn M Ruck

The 09 12 pan with white spill tube is the one you need ~ see second slide. The 12 12 pan is for the 722.9 Plus transmission that was fitted from approx August 2010 production. Never fitted to a W203 or W209.

A 2006 production car will have the original pan which requires update to a 09 12 pan. Even 2007 W203 production had the old original pan.

Glyn M Ruck

Here is the WIS document.

https://mbworld.org/forums/attachmen...e-modified.pdf

AdrianPuryear

Hmm, wonder why EPC says that the 09 12 pan was replaced then along with the gasket when I plug in my VIN.

I have all the other part numbers but the correct torque converter drain plug and sealing ring. If someone has those that would be appreciated.

Glyn M Ruck

Just checked the EPC & you are correct. Benz must have decided to standardise on the latest pan. I wonder why they have not updated the WIS???

10 A 220 270 06 12 .SUMP
Replaced_By: A 221 270 09 12
+001 A 251 271 00 97 [110], [111]
001
10 A 221 270 09 12 .SUMP
Replaced_By: A 221 270 12 12
+001 A 220 271 03 80 [112], [113], [111]
001

If it was me I would just fit the 09 12 pan & white tube with the improved gasket. Literally thousands of 722.9's are running with the greater capacity 09 12 pan with no issues. I imagine this is a matter of parts rationalisation & making more money. I can find no DTB that supercedes update to the 09 12 pan so I don't believe the 09 12 was ever an issue.

Your choice.

Good luck!

Glyn M Ruck

On reflection you should maybe examine that new gasket to see that it fits the 09 12 pan properly. The mating surface of the transmission has not changed but the mating surface of the 12 12 pan might have. Maybe better to mate like with like.

Glyn M Ruck

Hmm! to make matters worse the torque converter drain plug has been both 8mm & 10mm. Benz did mess around with a number of torque converters around this time. All 722.9's that I have meddled with have had 8mm plugs I believe.

15 N 007603 3010100 .SEALING RING
CONVERTER 001
20 A 000 990 62 17 .SCREW PLUG
WITH SEAL RING
M8X1 001
20 N 000000 0000884 .SCREW PLUG
CONVERTER
M10X1 001

AdrianPuryear

I can find the M8 plug w/ seal ring by part number of 000 990 62 17 but the M10 items I cannot find at all by those part numbers.

AdrianPuryear

I looked up in EPC based on my VIN and the drain plug with seal ring is listed as A 001 990 11 17 and is an M8 size drain plug. Is that the right plug then?

Glyn M Ruck

Yes ~ that would be a version of A 000 990 62 17 which is M8.

Benz has so many part numbers for the same thing. Searching a part number by VIN is always best as the whole Benz system is driven by VIN & that will be correct for your car build.

EDIT: I did a generic search for transmission 722.901

AdrianPuryear

So relying on the EPC Online tool to have the correct part numbers for my car based on my VIN is the course to follow? I am a bit confused since I have the 09 12 pan but the 12 12 pan is what EPC states along with a different gasket. Just trying to figure out how to get the correct parts for this and other projects.

Glyn M Ruck

I don't know what EPC you have access to. My copy is a few years old. The dealer EPC is live linked to Benz & always up to date with the latest recommended part for your car's VIN.

e.g. ~ Your car will definitely have an M8 TC plug.

Your car will not however have a 9 12 or 12 12 pan fitted but both will fit. (from experience we know your MY car came with the original pan prior to redesign.

AdrianPuryear

The EPC I am referring to is the free one provided to everyone that is live/real-time data for MBUSA vehicles. http://epc.startekinfo.com/epc/home.jsp I called MBUSA and they got me a log in. It's free and easy to get. I am surprised that you don't have one to be honest. I have the 09 12 pan as mine must have been serviced at some point (I got this from the pan itself when I was up underneath. So it's the updated pan just wanted to be sure I got a matching gasket as it is time to do this again. Actually past due since the last and only time was probably around the 39K mark where most were done by the MB dealer.

Glyn M Ruck

Startekinfo is only available in the US for US bought Benz cars with a known US VIN. This is not available to ROW. I only have direct access to Lubricants & Service Products due to my job. I live in South Africa.

If you already have the 09 12 pan then your car has been updated. Leave well alone.

Rudeney

Yep - that's the bottom line - the 09 12 pan is fine. The only issue with pans on our CLK transmission is that if you have the 722.9 and the older pan without the slope. In that case, the new type filter will not fit - you must switch pans to the sloped one (either an 09 12 or 12 12). Since you already have the 90 12 sloped pan, you are good to go.

AdrianPuryear

Sorry about that. Guess I should have noticed the location before opening my mouth. LOL. Anyway thanks for the help as always.

Rodney, same thanks to you sir for your help.

Glyn M Ruck

No problem at all. Always a pleasure.

Rudeney

You're welcome - and good luck on the fluid change. Let us know how it goes.

California

Rodney and Glynn:

So as I reported when I got this car, I showed my local dealer the WIS document and they assured me that they drained the torque converter.

However, as i reported here, I was having "jerky" really JERKY start ups on the car and you guys told me it sounded like the transmission fluid was low.

I have taken the car in at least three or four times -- mechanic who did the torque converter drain said there was no problem.

I have contacted MB double this many times on the phone about the jerky starts with the transmission in gear.

Yesterday?

The car got stuck in 1st gear. Revving wildly. Thank God I was on a side street.

Not happy.

Should I have the transmission fluid analyzed or -- what?

This is bad news. In eight months, I have put on about 2500 miles. That's it. The transmission should not be sticking after a full torque converter drain and work done according to the WIS, AS MY MB DEALER STATED THAT THEY DID.

Rudeney

When the TCU detects a severe problem, it will go into limp mode. That means it usually stays in on gear, I think 2nd or 3rd, which will get you out of traffic and maybe let you poke along side roads to get home, but not really "drive".

I think you need to get the TCU codes pulled to see what they say. If there are no codes, then it sounds like it's not getting enough pressure to make a shift, and this is often a symptom of low fluid. Even if the they didn't do a proper torque converter drain, this shouldn't be a problem if they did refill it properly.

When I did mine, I had a hard time getting the temperature just right, and just a few degrees did make a difference in the overflow rate. Maybe it's time to find a good indy that knows this stuff, or maybe one who is willing to research these threads and the WIS docs we have posted and check it for you. If I can do it, then surely a professional mechanic with a proepr lift and tools can handle it.

Jon2007E63P30

Rudeney, this is one of those rare threads that has so much solid information in it. Really appreciate it.

722.9 transmission oil change is the one thing I do not do myself. Search my user name and DIY, I do a lot on my own.

I do not think my service dealer drains the torque converter. Does that not apply to my car? Just thought I would ask.