[TR] Question on Fuel pumps TR3-4
Don Hiscock
don.hiscock at gmail.com
Wed Feb 21 17:58:18 MST 2018
This exact thing can happen if the cam lever is inserted with the wrong end
of the lever bearing on the cam lobe. Hard to imagine if the lever is
inserted correctly. Might be worth it to double check that the reinstalled
pump has its lever the right way. The long flat surface on the lever
should bear against the cam.
Here's a worn lever on an original AC pump from being positioned
wrong-side-against-the-cam. Compare the tip wear to a standard lever, and
see the bearing surface opposite that worn corner. Note: I won't tell ya
who did this, but they're suitably embarrassed (and it wasn't me) :)
https://photos.smugmug.com/photos/i-XQ7d3fM/0/f3e2e8a6/X3/i-XQ7d3fM-X3.jpg
On Wed, Feb 21, 2018 at 12:31 PM, Michael Burdick <burdickm at mindspring.com>
wrote:
> My dad had a reproduction pump on his TR2 a few years ago, added after the
> engine was rebuilt under the assumption that newer is better. One day not
> too many thousands of miles later, the car started, but would not stay
> running more than a few seconds. After some diagnosis, the pump was
> removed and the arm that rides on the camshaft was discovered to be worn
> down to the point where the lobe on the camshaft could no longer move the
> arm. He dug the original pump out of a box in the basement, reinstalled
> it, and has been trouble free ever since (at least with respect to fuel
> pumps)*. I'm not sure if Moss is selling that exact pump, but I think that
> the axiom "you get what you pay for" may be in play here.
>
> Good luck with the sale,
> Mike
>
> * I don't want to think about where the metal missing from the pump arm
> ended up, but so far he hasn't had any issues...
>
>
>
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