[TR] Overdrive issues

[Rye Livingston]

I don't know if it was the bypass valve spring, but they did show me different size washers/shims they were using for some springs. They were the diameter of a silver dollar or more. Sorry but I'm just not technical enough on transmissions to field all these good questions and suggestions.
I do appreciate all this info though and am forwarding to British Motorsports.

Thanks,

Rye




On Jun 11, 2016, at 10:10 AM, ptegler <ptegler at verizon.net> wrote:

the bypass valve spring can be replaced/shimmed to adjust pressure as needed.
ptegler

On 6/10/2016 9:04 PM, hdrider570 at att.net wrote:
When I had this problem with a J type OD, it was wear in the pump piston/bore.  This pump uses no seals so I expect that your mechanics are talking about the accumulator piston(s).  Basically when the piston/bore wears the clearances increase which allows oil to bypass the piston resulting in lower pressure.  One thing that I noticed was that the slippage was more pronounced once the OD warmed up thus reducing the viscosity of the oil.

I expect that a worn drive pin in the piston could cause a similar problem by shortening the piston sweep.

Bottom line is if you are not getting enough oil pressure, it is a hydraulic problem which is either not enough supply (pump wear?) or excessive losses somewhere such as bad piston seals etc.

Edward Hamer
Petaluma CA


** triumphs at autox.team.net **

Donate: http://www.team.net/donate.html
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
Unsubscribe/Manage: http://autox.team.net/mailman/options/triumphs/ptegler@verizon.net

-- 
Paul Tegler ptegler at verizon.net www.teglerizer.com

** triumphs at autox.team.net **

Donate: http://www.team.net/donate.html
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
Unsubscribe/Manage: http://autox.team.net/mailman/options/triumphs/ryel@mac.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/triumphs/attachments/20160612/a2a8ad08/attachment.html>