[TR] Question on Fuel pumps TR3-4

[Michael Burdick]

The pump my dad had did not have a cast cam lever like those in your
picture. If memory serves, it was several ~1/16” thick pieces layered
together to make up the ~1/4” thick lever that was held in the body of the
pump with a roll pin.  It did have a priming lever though.


On Wed, Feb 21, 2018 at 7:03 PM Don Hiscock <don.hiscock at gmail.com> wrote:

> 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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