I spun a main brg.The crank needs work and one new sleeve on that hole.To do it right I think I should sleeve all 6 or pistons on the other five.It needs new valves and injector cups.The head and block are fine.Oil pump seems ok.If I replace all 6 with new pistons and sleeves I am looking at $3200.00.This does not include new oil pump(extra $395.00.
Thank you for the answers.
The used tractor was new to me and used oil.I neglected to check oil on a busy summer and was working it hard pulling a belly dump from a ditch.I was on a side hill and low on oil.
After tear down I discovered blow by,1 or 2 exhaust ports 3/4 plugged with carbon.I think the engine was ready for overhaul.Some say not to weld a diesel crankshaft.The machine shop its at,say he has no problem.
Any more info would be appreciated.