Wrong Renze. Here in norway there runs a few crystals clocked more than 14000hours. Not much left from a ur 1 after that...
My brothers 6718 has close to 21.000hrs and is doing its last season... coming winter the engine will be rebuilt, because when it works hard, it smokes as hard out the exhaust as out the crankcase breather, and uses 2-3 liter of oil per day. Probably a piston ring fatigued, and broke last season.
It will need new heads as well as i dont expect there will be much of a valve seat left...
I rebuilt my 3011 at 11.000hrs because of poor starting in winter, but after opening it, the engine was in a remarkably good condition: you could only feel the piston wear with your fingernail, but not with your fingertop. the valves had worn down less than 0.5mm and the crank bearings were so good that i kept the new set on the shelf... anyways, after rebuilding it still started poor, then i went on looking and found it sucked air because a copper washer was missing on a
fuel line on the backside of the pump.... I only noticed that the washer was missing when swapping the fuel pump (which was then my prime suspect for the poor starting) with a 4712: After putting in new washers, both tractors started great.
UR1 tractors dont live as long in Western Europe because they are livestock tractors, which make their days covered in shit, with very little maintenance.
The UR2 was an arable farm/contractors tractor, which is a user category that maintains the equipment because they earn their living with it. In Holland, when a tractor comes from an arable farm area, it is a strong selling point because it is way better maintained than a tractor from a cattle area.
And, ask Markku: he clocks over 800-1000hrs a year on his UR1....
