Posted by Determined on May 12, 2020 at 06:55:40 from (216.130.212.201):
In Reply to: JD 4239 engine. posted by L8R on May 11, 2020 at 13:07:21:
(they are asking about standard rod and main bearings. They give other options of 0.010, 0.020 and 0.030 for sizes. what does that mean and how do I know which size I need?)
If the engine was previously repaired or overhauled it would be common practice for a machine shop to have cleaned up any scoring or wear on the bearing surfaces of the crankshaft by machining it to a smaller size, how much smaller would be determined by the depth of the damage on it.
The only way to know will be to first find the crank specs for your engine then with the proper micrometers measure the crankshaft you have.
If for example a machine shop removed .020 of material to clean it up then a .020 oversized bearing would be required.
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Today's Featured Article - Bad Vibes - by Curtis Von Fange. One of the strangest ways to communicate with our tractor is to ask it how it feels. "Ask it how it feels," you say? Yup, ask it how it feels. Now, as with the other articles in this series one has to be able to hear what 'ole blue' is trying to say in response. The nice thing about our old iron friends is that they are usually quite consistent in their response, rather unlike some people I know who might change what they say due to the weather or other mitigating circumstances. But since t
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