In my opinion, 'Ideal wear' would be three different bearings that look like the top picture.
Looking at pictures doesn't tell much. You need to get the crank measured with a micrometer. A good engine shop should be able to do the job for you and tell you how badly the crank is worn and if it needs to be re-ground under size. And they probably can help you with bearings as well.
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Today's Featured Article - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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