Posted by Earl -IL on September 09, 2010 at 15:45:50 from (173.24.247.84):
In Reply to: Main Bearing Size ???? posted by Ramp Rat on September 07, 2010 at 07:07:45:
Very few shops have a hardness tester.But I have found that if you check the hardness of the crank and it checks OK & the size & and oil clearance is correct bearing failure is usually contributed to engine assembled dirty, Pre lube was overlooked. On a major rebuild we always prelubed on assembly plus we used a Federal Mogul pressure lube tank.Rotating the engine until oil came up to the valve train.It takes a long time for oil to get to all the parts of a engine that is completly disasembled.This is only a few reasons for bearing failure. Engine class 101 is that bearing suppose to rub on the crank???
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Today's Featured Article - Restoration Story: 1964 JD 2010 Dsl - Part 2 - by Jim Nielsen. Despite having to disassemble the majority of my John Deere 2010's diesel engine, I was still hopeful I could leave the engine-complete with crankshaft and camshaft-in the tractor. This would make the whole engine rebuild job much easier-and much less expensive! I soon found however, that the #4 conrod bearing had disintegrated, taking with it chunks of the crankshaft journal. As a resul
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