Posted by jwillett2009 on March 09, 2013 at 05:22:57 from (142.167.183.40):
Hi gentlemen,
I've got a little update on my tractor issues that some of you had been helping me with.
My MF-165 was not starting after an overheating incident. Suspecting broken rings or damaged pistons, and following the advice I was receiving here, I decided to take the cylinder head off and have a look. Well, I learned quite a bit.
Fuel injector 1 was dry and was full of a hard dry shiny carbon.... almost certainly cylinder 1 was not firing.
Fuel injectors 2 through 4 were heavily scaled and looked almost like they were dipped in mud.
The head gasket was broken between cylinders 1 and 2 and again between 3 and 4.
The fact that it run as long as it did is amazing.
The top of the cylinders have a lot of "pitting" but doesn't look too bad. I can read the stamped numbers on each of them and read the "front" labels through the pitting so its not deep. There is no evidence of major damage to the pistons like melting. There is some light wear in at the top of where the upper ring would stroke. Haven't determined if it will require new liners yet.
I have decided to try to completely rebuild this tractor. Even though I've probably found the major issues, I am going to complete the teardown. I experienced quite a bit of leaking oil prior to these issues so I want to get to the oil seal on the crank and replace the o-ring ect.
The manual talks about the motor as if it was sitting on a table somewhere. I called it an early night last night prior to removing the oil pan in the interest of safety. I wanted to make sure that I had a sound plan for supporting the tractors front axle (and rear end) once the pan is removed. I believe this is all the structure for the tractor.... right??? I want to remove the pistons to examine them and also to have a good look at the rings and cylinders.
What's the best way to do this from an "amateur" point of view (in terms of garage). I am working in a garage on a concrete floor but not set up for an heavy hoisting. I don't have any special jacks or cranes. I have a small sawmill so I have lots of dunnage to crib with.
Hopefully, we can keep this thread active and document this rebuild.
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