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On the Pinion side of the crankcase there is a pinion bearing and thrust washer. beneath this thrust washer is calls for a shim. In the past I have always installed the same amount of shims as it originally came with and have never had a problem. MY question is; how do you determine the correct shim size to begin with. I haven't been able to find any information in any of the literature that I have. Normally I set the end play with the shims on the drive side. Anyone have any thoughts?
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The rods need to be centered in the cases,so with .015 -.020 total side clearance the wheels should only move half that from center toward the pinion or drive side.
I never needed a shim,some motors may have had one and I didn't notice.If this is not achievable with thrust washers a shim could take up the difference.
I dial indicator on the shaft end is easiest to get end play and adjust accordingly.
Tom
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