[Fot] J type overdrive pump

rkramer3 at austin.rr.com rkramer3 at austin.rr.com
Thu May 22 16:36:30 MDT 2014


I can't help you but it was good to see you at ECR!

Bob Kramer
rkramer3 at austin.rr.com

---- 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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