If I understand what your asking the right way, I did not take apart the pressure piston or relief valve side of the pump just separated the two sides to reseal it in the center where it was leaking from. Pressure piston side is the front of the pump where the input shaft goes in, relief valve side is at the back of pump they are all cartages that bolt or screw into the pump body and have to be removed one by one if you want to repair them.
If you mean that rubber cup type seal with the wear o-ring that slip's onto it that's on the main input shaft it does not come in the reseal kit. You will need to get ahold of a Massey Ferguson/Agco dealer it's a separate part sold on it's own, and yes they can be hard to get even from the dealer's. I'm sorry I don't have a part number on hand for it as mine was still in good shape, got very lucky as most time's that's what leak's on these pump's. This pump was leaking from one of the o-ring's on one of the high pressure port's on the relief valve side of the pump.
Sorry I had to us an internet language translate, hope I got this right. What country was this model of tractor built in? They where built here in Canada in the 1970's and sold here in the North American market. There was three model's in this tractor line 1105 - 103hp 1135 - 122hp and 1155 - 140hp, hp meaning horsepower. The 1105 and 1135 like mine used the Perkins AT6 354 6 cylinder engines ( just different turbo's) very very good engine, the 1155 had a Perkins V8 engine a very bad engine so stay away from that one. All three where the same otherwise ie transmissions/rear drives/ castings and all. How to bring or import tractor's to your country? I'm sorry I really have no idea how to go about, that's something I have never done. There are company's that do offer export services that ship equipment world wide but the cost to ship an old tractor would be more than the tractor's worth would be my guess? Hope I was able to give you some answers, good luck in your tractor search; take care and safe travels.
