>> Are you saying that the vane is not through bored and
>> that the shaft does not reach through the vane to have the
>> same end float clearance as the vane against the lower
>> plate?
>
> Dunno nuttin about TR6 pumps, but that sounds a lot like some bad TR2-4
> pumps that were on the market a few years back. Instead of being properly
> pinned, the shaft was knurled and pressed into the vanes. They had a
> nasty
> habit of working loose.
>
> Randall
Knurling a shaft that is a loose press fit or making random center punch
marks on the OD of a bushing that is a little loose are old machinists
tricks that would get you fired in the shop that I worked in back in the
60s. Now, it appears, it is a valid production technique! I will make my
own assumption as to the source of the pumps Randall refers to...
Mike
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