Well, i suppose this isn't the best way to start off a thread, but i recently acquired some land in Midlothian and prior to that i never owned enough land to need anything more than a push mower. I came across a used JD X495 online and they were asking $2,700 for it. I went and checked it out and it was in pretty good shape overall looks wise, cranked it up, tested all the features and even mowed a little but probably only ran it for about 10-15 minutes. I talked the guy down to $2,000 for the X495, and we made a deal. I loaded it up and brought it home. Fast forward 3 or 4 days i figured it was time to mow and i checked all the fluids and all was good from what i could tell. I fired it up and made two passes in the field and it began to notice the temperature beginning to rise so i shut the PTO off and made sure the fan was spinning and proper air was circulating through the radiator. All was well so it seemed, but i let it cool off anyways. It never actually got hot enough to "overheat". I fired it back up and began back to the house and all the sudden it started knocking loudly and also developed a sharp screeching sound so i immediately turned it off and checked thinking the pulleys were seized up somewhere but all were free. After that i didn't run it again, i free spooled the tractor back to the house and that's where it has sat. i noticed when the engine began to knock, more crank case gasses were coming out of the vent tube (more than usual) and it seemed to have a noticeable shake like it had lost compression on one cylinder.
I think i got duped on the tractor deal. I'm beginning to wonder if the previous owner put some kind of thick oil in the block so it would be quiet enough to hide the knock, and since i didn't run it long enough to thin the oil out i didn't hear the knock. My main concern is blowing a hole in the block but to me it sounds like a main or rob bearing is about to let loose. I'm just glad it didn't throw a rod. But i'm dissapointed now because i'm out $2k and i have a useless mower. Is it worth it to find a replacement engine or rebuild my own? I've rebuilt engines before but not Diesel engines. I also am having a hard time finding a exact replacement engine. Does anyone know what other Yanmar engines will direct fit the X495 frame? My X495 is a Gen 1 2002 model and has a 3TNE74C Yanmar engine. Any input would be greatly appreciated!
I think i got duped on the tractor deal. I'm beginning to wonder if the previous owner put some kind of thick oil in the block so it would be quiet enough to hide the knock, and since i didn't run it long enough to thin the oil out i didn't hear the knock. My main concern is blowing a hole in the block but to me it sounds like a main or rob bearing is about to let loose. I'm just glad it didn't throw a rod. But i'm dissapointed now because i'm out $2k and i have a useless mower. Is it worth it to find a replacement engine or rebuild my own? I've rebuilt engines before but not Diesel engines. I also am having a hard time finding a exact replacement engine. Does anyone know what other Yanmar engines will direct fit the X495 frame? My X495 is a Gen 1 2002 model and has a 3TNE74C Yanmar engine. Any input would be greatly appreciated!