[TR] FYI on oil pump problem

[Michael Marr]

>> 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