7060 questions

My early maroon 7060 looks like is needing special attention. Beginning with what appears to be some serious blow by. If that isn't concerning enough recently the oil pressure light was taking much longer to go out than usual to a point it wouldn't go out at all today. I have another 7060 just sitting for now so I swapped oil sending units and that worked as normal so suspecting a defective sending unit. Which brings a question. I want to install a pressure gauge to check actual pressure. What PSI should expect to see? Hour meter shows over 11000 hrs. Accurate? I don't know. What was done to it by PO? I don't know. I have plans to drop oil pan and check rod bearing clearance. Another thing I checked, loosened the oil drain plug and got about a pint of antifreeze out of it. Didn't want to see that. Will find more information after pan drop. Coolant system doesn't seem to be pressurized with engine running but will do further testing. Injector pump leaks around throttle shaft.

Finally got it in the shop and dropped the pan. Coolant is dripping off the #4 cylinder over the main bearing.

October 1975...std size

That brg appears to have no tin coating. Have seen car engines that way in 70's and 80's

Who knows...my 83 8070 still had an original front upper main shell which was FM and it was tin coated but the rods and other mains had been replaced with Clevite 112's

Couple of things. I use a hydraulic jack and a fairly big rod to push the sleeves out from below. It might be a good time to get the radiator checked out. Scored cylinders can certainly come from overheating. It looks like the tractor is still using the luber finer filter setup. Those things can leak when you least expect it and cause even more headaches. I would be looking for an 8000 series bypass filter or depending on the work load, just eliminate it.

Might be a good time to change thermostats. I have put on a fair share of mechanical heat gauges on those tractors because of the inaccuracies of the electric gauge. The luber finers usually leak externally from the top cover gasket. If you don't notice it right away, especially at night, you will notice the red, oil pressure light, shining in your face. By then, it's usually to late.

plummerscarin wrote: I've replaced the thermostats twice and have not solved the issue. I think I'll invest in an infrared thermometer to compare with. I have a 7040 the PO installed a temp gauge as you suggested. The two gauges do read differently

where did you get your thermostats from??

A few years ago the thermostats agco were selling were like what you could get from A&i or other aftermarket’s and they did not let enough coolant flow. The thermostats they sell now are correct. Our 8070 and 7060 were both running warmer that they should with re cored and an extra row of tubes in the radiator. Took out those junk thermostat and replaced with the good agco ones and temps came down. Gotta really work the 8070 to get it go anywhere near 200-210.

I understand what you're all saying about the luber finer. When I initially drained all the oil there was big spurt of air come out the drain tube. This was after it had sat a couple days. It will be going away.
I was granted the use of a sleeve driver and they have all been removed.

It actually lifted one tire off the floor before popping loose.
I reckon some of you may get a chuckle out this but I was not aware how much coolant would come out of there after the first sleeve came out. Where does one drain the block after the radiator stops dripping?
Thanks for all the help from everyone so far

Ive never owned a tractor with one. Its my understanding that on tne intercooled tractors its a bypass oil filter. Ive seen pictures. It appears to be a housing with a oil bath filter between the engine and cab. On the 8000 series they changed to a spin on

Yeah, a little late for that now. Good to know for future projects but really hope not to go through it again. All the bearings will be replaced as that was the original plan before the leak started.

I’m still in cleaning phase and my accountant was helping remove the sleeves and set them out order. I’m leaning towards O ring failure as nothing else stands out yet

Steve is correct. As the sleeves came out the O rings were stretched and ultimately damaged pulling through the upper deck bore. This particular one may have failed before tear down.

I'm no forensics expert but I think O ring failure. I backlit the sleeves and found no pinholes . I'm thinking the sleeves actually look pretty good.

There won't be much more information on the engine in a 7060 manual that a 7045 doesn't have. Fuel injection pump setting, luber finer, and intercooler information is about it.