I've just signed up to the forum as my C36 has developed a rather serious problem - the gearbox [a 5 speed model] has become jammed in second gear.

I'm from the UK, but I had just brought the car over to Germany, as that's where I'm working at the moment (note that I don't actually speak any German...), so I'm currently in a pretty difficult situation, as I don't have a lot of spare cash at the moment to fix what is likely to be a very expensive problem!

The car developed the fault after I'd given it a blast on a section of derestricted autobahn near where I'm living. Since then I've allowed the car to cool down, etc. and then tried it again, but it is still stuck in second. I ran the car to a nearby MB garage, who said they'd "test" it for me. I almost died when they came back to me and told me that there was debris in the transmission fluid and that the gearbox and torque converter would need to be replaced for the tidy sum of €6,000! Oh, and that the test had just cost me €360 . If I had known it was anywhere near that much I wouldn't have had them do it!

Anyway, I'm now looking to get hold of a replacement gearbox and I'd really appreciate it if anyone could give me a little more info on the auto 'box used in the C36. Is it the same as in all other W202 C-Class models? Or is it shared with other more powerful Mercedes that were made at that time?

Furthermore, does anyone have any info where I might be able to pick one up on the cheap? Are there any scrap centres in the UK (or anywhere!) that specialise in MBs that might have a used box for sale? I'm pretty competant mechanically, so fitting shouldn;t be a problem - it's just that I don't have the first idea where to get parts from at a price I can actually afford...

Any info would be much appreciated!

Thanks.

honestly, at those prices its more cost effective to just part the car out, get your money back and buy another car. C36s aren't going for much anymore so it would be foolish to drop that much money into that car. Engines alone go for $2500-3500, and selling off all the rest of the AMG goodies, you might as well go that route (unless insurance can somehow replace it for you). Good luck, hope that helps

~AMS~

Hopefully someone on your side of the globe can come through for you. In SoCal, Sun Valley (the local MB transmission rebuilder) has a rebuilt 722.629 with torque converter in stock for $2750. That's your transmission, and it comes with a 2 year warranty. This place has been in business for decades. Best wishes.

Thanks for the responses. However, I'm still a little confused about the exact details of the 5 speed transmission in the C36. Is it the same as is used as by other W202 C-Class models? Is from other AMG models? Or is specific to the C36?

Is this the part number for the C36 auto 'box? If so, I couldn't find much info on Google

Thanks again.

The C36 uses a different transmission than a C220 or a C280. For example, a 1996 C220 uses a 722.423, while a 1996 C280 uses a 722.424. I don't have any details about specific differences, but most MB transmissions have different torque ratings. I would guess that the torque rating in a 722.423 or 722.424 is lower.

As for the number I supplied, that's the transmission 'type' for a C36. Specifically, it's the later C36 transmission. The early type is a '722.328'. Mercedes-Benz part numbers are typically ten digits long. The part number for a 722.629 is 202-270-3700 and it lists for about $4900 at most US MB dealers. The part number for a 722.328 is 202-270-2300. That one lists for about $5200.

Lastly, the only Mercedes-Benz I show as using a 722-629 is a C36.

Many thanks for your reply Marcus. I'll have to see what I can afford to do...

Too bad you are on the other side of the globe, my tech has a complete C36 engine
and tranny for like 4k with all modules.

The 722.6 in the c36 is a large nag as in the v8 cars. The bellhousing is different for bolting up to the m104. You can get a v8 transmission and swap the bellhousing/front cover and bolt it up. Other than the amount of clutches in any given transmission the internals are the same. There is really only two different 722.6 transmissions that are of concern. The large and small. Every other difference is either the bellhousing or how many clutches in each pack.

Sorry to hear about your problem. What a complete b*gger to have that happen overseas. Looking through Mercedes enthusiast, there are a couple of Merc scrappers that might be able to help. A1 Merc Centre in London 020 8556 5585 and Mercman in southampton 02380 784444. Also Charlton autoparts near Cambridge (used them a while ago and they are fine - Find them via yell.com).

Hope this helps,

Mike

hi, sry to hear about your gearbox, i had to replace my gearbox 3 years ago.

theres a E36 gearbox on ebay at the moment (im pretty sure its the same) you can check the part numbers out from the dealers by giving them your chassis number.

theres a few uk breakers, try dronsfield, or PC Merc center in leyton for staqrters, also a few breakers on ebay.

hope that helps, im normally on mbclub.co.uk if you need more info, cheers

Have you check out Ebay.de their is at least a couple of C36 gearbox's for sale in germany. Search for w202 amg Automatikgetriebe.