Old L245 oil light comes on after 10 min.

[tsinclai]

I have a 77 L245 in rough shape. I rebuilt the top end and now after about 10 min. of use the oil light comes on and stays on. It seems to run fine I have put about 10 hours on it after the rebuild with no priblem. I do have a oil leak in the front somewhere that I have not located yet. I did read about the cam plug in a post and I will check that out. It is just odd that it takes 10 minutes for the light to come on. Any ideas? Thanks, Tim

 

[Bluegill]

It could be that the oil pressure is good until the oil gets up to temp then gets thinner, thus the 10 minutes. I'd get a gauge and screw it in where the sender is and read the pressure. If good, replace the sender, if bad, rebuild the lower end.

 

[D2Cat]

As suggested, it could be the oil pressure drops enough for the light to come on after warming up. I think the light comes on at 7 PSI. But put a gauge on it and know the number. If it's low you can do a search on the forum and get additional information, but I have removed the front of the engine to get to the camshaft end and welded a tapered roller bearing in it. Not too big of a deal. Easier then rebuilding the bottom end, and you could do that and still have the same problem.

 

[Daren Todd]

Could be the oil pump is getting weak, and I have seen a cracked pick up tube do exactly what you are describing. Just replaced the camshaft plug in mine. Scraping the gaskets was the hard part. The plug is only $4 thru kubota.