[Fot] J type overdrive pump

[robert bownes]

I had one break in a very easy to repair fashion. Check the woodruff key
that ties the pump eccentric to the central shaft. Without it, the
eccentric is only spun by friction.

Bob



On Thu, May 22, 2014 at 6:28 PM, Larry Young <cartravel at pobox.com> wrote:

> I'm helping a friend with a J type overdrive in a TR6.  The old one
> suffered a broken transmission output shaft inside the overdrive. It was
> trashed so we are using a Volvo unit that I happened to have.  I tore it
> down part way, but it was so clean I didn't take it all the way.  We
> replaced most of the rubber o-rings, rebuilt the tranny with a new output
> shaft and put it on my test stand. The solenoid clicks when 12v is applied,
> but it does not develop pressure.  I am much more familiar with the A type
> than the J type, so I need help.  I took the pressure gauge off and when I
> spin the overrdrive  it first spit a few bubbles and then oil came out very
> slowly.  It is my understanding that it should always pump whether
> overdrive is engaged or not, so I believe this confirms the pump is not
> pumping.  We have tried packing the pump with vaseline, a trick that has
> worked in the past, but that has had no effect.  Can anyone suggest how I
> should proceed to get this thing going?
> Thanks,
> Larry Young
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