Depending on a variety of factors not known by anyone but the cam grinder, here is my take. The distributorwobbles when a bit loose. The reason for this is mechanical motion coming from the coupling between the oil pump drive gear and the distributor shaft. The wobble is generated from either a bent end on the distributor, a bent or abnormally worn drive on the pump, a worn pump gear with teeth that engage the cam gear eccentrically, or a cam gear that is not concentric with the cam Centerline, and causing the oil pump drive gear to be pushed out and in. I cannot tell you which it is, or if there is wear on bushings. Measurement will do that, a set of telescopic bore gauges, micrometers and dial indicators are needed. Cam bearings are not going to cause the issue. Cam gears are hobbed into the cam metal, not added on. If a heat treatment process goes wrong, it can warp metal and cause issues. If the same cam that was in it is reground, and it was bad in the concentricity of the gear, it will not be fixed or checked buy the grinder. unless suspected, it was not. If the wobble is not found by eye, it will be necessary to measure. Jim
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Today's Featured Article - Women and Tractors - Tractor Engine Repair - by Teri Burkholder. One of the great things about working on a tractor engine with your other half is that you know what he is thinking of at all times and can anticipate his every move and his next thought of what he will do. With Ben, anyway, I can tell! He'll be busy working and I’m handing him tools and he says, "give me that..." and I’ve already got it in his hand or "hand me that....."and I’ve got the portable light right where he needed it placed to see. "Run in the house and get me a...."as I open th
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