Kurt in Va Beach
Member
I have a MF165 gas with G176 engine. I was loosing oil pressure and thought it was the oil pump. but thanks to the great help here, it looks like the connection rod bearings are worn. the first 2 from the front have a little play, maybe 1/32. the 3rd is tight, the 4th is where the bigger problem is. have about 1/16 in. play and this is where I think the slight knock is coming from. I have a couple of questions. 1- can I just replace the connecting bearings? reason, I need the tractor back asap and don't have time to split the tractor to take the crank out and re-ground/replaced. so if I can just replace bearing while in tractor, that would be great. the 2nd question is when I disconnected the 4th rod and looked at the bearing, it is little warn. but I noticed that on the crank where the bearing was, there are "micro" groves - like record groves. is that correct? from what I can tell, they look like there were put there as the are evenly spaced (like a record). the bearing I took off was marked .010 so can I just replace with a new over-sized bearing of .010? everything else looks fine and no ware. thanks for all the help!