new to us 7040

nuthin

Between myself, my brother, my cousin and 2 uncles not one of us has had a torque limiter fail. That is to date a list of tractors including (2) 7050, 7040, 7030, 7020, 7045, 7060, 7580, 8010, 8030, 8050. Lucky I guess.

7040 used to be my main tillage tractor.  Pulled 5-18's and 13' chisel easily.  24' s-tine FC with 5-bar harrow was a load sometimes, wouldn't have wanted anything bigger in my soils.  Mine dyno-ed 150 hp from the factory.  Had the pump rebuilt and they said they usually turn them up about 10% so 165 hp? after new pump.  One thing, change the coolant and use distilled water and be sure to add the proper amount of coolant conditioner, liner erosion can be a problem.

If it was me, I would have the oil pan dropped, and check the rod bearing clearance. If the bearings get some wear, then they hammer on the crankshaft, and break the crank. I would also pull the cover off the rear end, and check the shaft that goes through the two pinion gears. If the shaft looks okay then you have to go no farther other then replace the shaft. We used to have a lot of problems with broken cranks, and the pinion shaft breaking, till an old Allis dealer told us to start checking these things every 3000 hours. Never had a problem after that.  Torque limiter can be a problem. I would also put all new bushings in the clutch linkage. If you are mechanically inclined, you can do all of these things yourself, in a big day.