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He has the spicer on hand likely cause that is what many of the larger commercial trucks (dump trucks, busses, 18wheelers etc?).I dropped off the intermediate drive shaft off today at the shop. The owner indicated the coating was designed to wear less than metal on metal splines and was more forgiving to drivelines that rarely got greased. He did say that I had the 2" splines and would remove the cardboard, if present, in the shaft. What I didn't know is that I needed the new u-joints installed in order for him to check balance. I dropped it off with no U-joints. He had the Spicers so I said go for it.... Just waiting on the phone call. He indicated he would let me know if he could rebuild it or if a re-spline was necessary.
Interesting. While i'm thinking the "hinging" issue is compounded by the coating as the investigation suggest, he is telling me its desirable to have the coating over a steel-on-steel spline... I find it fascinating that even the simplest of parts can be technical."The owner indicated the coating was designed to wear less than metal on metal splines and was more forgiving to drivelines that rarely got greased."
Well, these ones should never get greased. You don't want to damage the coating. Grease has forever been problematic in splines as the rotation centrifuges the oil from the grease thickener and there is no stirring action to bring it back into suspension. Shear stable greases with polyurea thickeners do work well on splines but we all know what general public knows about greases (they're all the same or mine is best)
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