Quote:
Originally Posted by RobFrost
The force on the face of the rocker is greatest there, closer to the fulcrum.
Not only because it is where the spring is more compressed, but also because the leverage the cam has over the spring is less.
It is possible that there is some pressure threshold above which the oil is either excluded altogether, or is thinner than the grain size of any abrasive debris suspended within it, causing a sudden step up in wear within a certain proximity of the fulcrum.
If your spring force is particularly high, a thicker oil will counteract the propensity of the oil to be squeezed out.
The multiple ridges, to me, suggests a failure condition involving the rocker jumping in steps or vibrating. I suggest checking if it is loose on its shaft, or the rocker loose in the cam box, or even the cam box cracked.
Just from a physics point of view, not speaking from experience.
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After reading this a few times, it feels a little like a word salad.
Is it possible for you to explain your conclusions differently so non-engineers like me, can understand?