PTO problem? Gearbox noise Super major 1963

[Aleš63]

Hi thanks so much for your valuable advice! I'm currently waiting for a friend to have time to disassemble the tractor in his workshop. I took the engine cap off today and there was emulsion so I'd say my coolant is going into the oil. And I have one more question for you guys, I have a Seal leak at the decompressor lever. Do you know where to buy it? Or alternatively what are the dimensions ? I'd try to get one here. Unfortunately I'm from Europe and I only found it on order from America I think. Unfortunately, my Major has more problems that I have to solve... Once I get the gearbox sorted out I'll have to find out why my tractor won't keep revving... All of a sudden the engine starts revving itself up and then keeps revving at a higher speed. I have noticed that when it is cold, the revs hold normally for a while, but when I start doing something with it, the revs are still high and sometimes low again, and then the engine stops on its own. It just has an idle problem... I have a complete pump and injector repair kit so I'll probably take it to an injector pump shop. Thanks again for your valuable advice.

[Billy26F5]

That does look like coolant in oil, various things can leak the best test is to pressurise the coolant and look underneath with the sump off to see where it leaks. Fixing it will at least require a new head gasket, but could require a full overhaul. As for the decompressor seal go to a seal factor with the old seal, he'll make you a new one of high quality and with the correct sizes. I'm not aware of these seals being available. I recommend you service the injector pump (assume it's a minimec), and check for binding in the rack, any binding will cause issues with operation. If it doesn't improve easily you'll need to take it apart for a clean. Ensure no dirt of any kind gets in.
Sandy