Hello everybody,

This is my first post in the forum and I´d like to introduce myself. I live in Spain and have recently acquired a 1982 mb 300 td turbo w123 euro version.

I knew the car from before I bought it as the owner from new was my neighbour, but he is old now and having other modern cars was giving very little use to it in the last years and finally agreed to sell it to me.

I´ve had some work done to it since I bought it (mainly refreshing all the fluids and filters and a good clean up of the fuel tank), new tyres and some adjustments to the ALDA and throttle linkage to try to improve response, and now it runs quite fine (it has 380.000 original kilometers).

I still have a couple of problems, though, as I have engine oil getting into the SLS reservoir. I´ve searched the internet in order to solve it and am aware of the need to rebuild the Hydraulic pump in the engine bay to reseal it. To do that I´ve ordered a kit from MB dealer that includes o-rings and gaskets (3 pieces) but I´ve read that the pump has two more o-rings that need to be replaced for a complete rebuild.

I would like to ask for your help to try to discover the real dimenssions of those two extra o-rings. I know they are viton o-rings (80 FPM).

The best information I´ve been able to find is that they might be 2-137 and 2-142. That´s equivalent in the metric system (the one we use in spain) to 52,07x2,62 and 59,99x2,62 but in some german forum someone says that they could be 53,65-2,62 and 62,00-2,00 instead. So, could anyone confirm me the correct measures?

I´d like to be as accurate as possible to the original o-rings size.

I know ************** has complete kits with all the parts needed, and if I was in the states I would order it from there for peace of mind, but now that I got half of the parts ordered from the dealer it´s easier for me to get the viton o-rings here, just need to confirm the dimenssions, and I would be grateful if someone could help.

The other problem I still have is the poor performance of the car when it is below service temperature. I´ve got nothing to compare with but whenever I take the car for a ride after days without using it, for a good while the car has poor response to the throttle, barely catches speed, even after waiting some minutes before moving you have to accelerate a lot, almost to kick down and you still don´t get it to accelerate properly. If you find a hill during those first minutes it looks like it´s not going to be able to get to the top and eventually you´ll have to reduce gears to S or even L.

Once you reach service temperature it goes fine accelerates well and can reach 160 km/h or so without problem and goes up hills at 100 km/h

Greetings from Spain and I hope you can help me with the o-rings