Hi Tenor Man;

That is the same failure mode that I had, except that your friction plates are not as far gone as mine were, and I also had a broken huge circlip.

My K1 drum also looked just like that. I figured that there was no actual material gone, and I don't think that there should be a lot of differential rotation under pressure requiring a smooth surface. The wear is caused by the broken parts contacting when they shouldn't. I just left mine. It seems to work fine, although I suppose it could be a time bomb.

The small seal comes in the gasket/seal kit. The only ones that don't are the two large ones hidden inside the K1 and K2 drum assemblies (the ones that you have to drill out rivets to get at). They are a bit tricky, but the Corteco pamplet tells you how:
http://www.transtec.com/tech_insert/94642.pdf at page 7. Mine were maybe still sealing, but they were hard like bakelite. I replaced the rivets with bolts as directed, and used lots of loctite putting them back together.

The springs and the broken spring holder are cheap from the dealer. I got a seal and gasket kit, complete with friction plates, on e-Bay. It was great. Most of the friction plates were genuine Mercedes. There is a kit for the 722.4 transmission on e-Bay now, which seems to include the friction plates (the picture is small), for $240 (which seems highish).

Andrew

My first thought was to get another K1 Drum...but i may try to polish the surface smooth again.

I'll need to check the shaft and see if the circlip is still on the shaft...it didn't fall out with the rest of the parts.

I'm lead to believe that something caused the spring cover to ride on the K1 housing. I'm not convinced that the spring cover is a "wear" item. I don't think that it should ride constantly on the K1 drum surface. In reverse, it probably does. But once the transmission is no longer in reverse, I'm assuming the springs are to back-off the B3 Piston and release the reverse clutches...but I could be wrong.

This has been a great learning experience for me...and many thanks to all for the valuable help..

The Tenor Man.

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Currently Driving.....
1987 Mercedes Benz 300D Turbo - Daily Driver.
2004 Buick Rendezvous...Smaller than it looks!
2005 Mitsubishi Galant - Not bad for a tin box...Lousey Seats
Past Vehicles.....
1994 Dodge B-250 Van- GAS HOG..Succumbed to rust!
1989 Mercedes Benz 260E - Totaled but no one injured.
1977 Mercedes Benz 240D - Loved it, but SLOWWW! - Succumbed to RUST!
1976 Mercedes Benz 240D - Same as above! -
1975 Mercedes Benz 240D - Same as above!

Any update?

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I received a couple of calls today asking if I know this worked out.

Its been about 3 years now.....wonder what happened with this.

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1990 190E 3.0L