John, I'm no expert on the D-type, but from your description the problem
almost has to be low pressure when hot. I'd suggest investing in a pressure
gauge & adapter.
(Fred, Ronnie, did you guys ever get the adapter worked out ?)
Randall
> Hello triumph experts! I just finished installing a D-Type
> overdrive in my '70
> GT6. It is a re-built unit from Rimmer Bros., attached to a rebuilt
> transmission with new mainshaft. It works great, for about 6
> miles. then the
> shifting gets progressivey slower until it won't shift at all and
> slips. It
> seems to be related to the oil, 90 wt. gear oil, and will
> function exactly the
> same after cooling down. I cleaned all relief springs balls,
> seats, adjusted
> the solinoid and verified the lift, changed oil again, even tried manually
> operating the lever to open the pump flow to the actuator. The pump works
> cause it leaked up top at the copper washer and I had to tighten
> it. I really
> like to tear out everthing to check it, so I'm not going to
> re-assemble the
> tunnel until the #$%^&* thing works for real. Any possible checks or
> suggestions? I'm at your mercy! Thanks in advance.
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