[Fot] A-Type Over Drive Question Again

[Glenn Franco]

On Wed, Jan 1, 2020 at 7:56 AM Tim Hutchisen <hakhutch at roadrunner.com>
wrote:

> Hi Glenn,
>
> Having built numerous OD units, I have run into a couple of instances
> where the cone clutch needed to "bed in". If you installed a new cone
> clutch, the angle of the linings may not be an exact match to the brake
> ring and annulus and it will stick when applied. A good swift rap (or two
> or three) on the exterior of the brake ring with a dead blow hammer will
> release the clutch. Had this happen with Henry Frye's race car at Summit
> Point a few years ago. Driving around the paddock with the gearbox cover
> off and excersising the OD, releasing it with the dead blow hammer. It
> eventually worked it's way in with time.
>
> Tim Hutchisen
>
> Penn Ridge Motors
>
> Norway, ME
>
>
>
> *From:* Fot [mailto:fot-bounces at autox.team.net] *On Behalf Of *Glenn
> Franco via Fot
> *Sent:* Thursday, December 26, 2019 5:04 PM
> *To:* FOT list <fot at autox.team.net>
> *Subject:* [Fot] A-Type Over Drive Question Again
>
>
>
> Happy New Year
>
> Quick Question
>
> I have rebuilt numerous A-types over the last few years, but I have one
> that's been giving us fits.
>
> Transmission was a TR6 and the mainshaft was replaced with the proper
> overdrive shaft for the A-type.
>
> The A-type appears to be an early one with steel piston rings on the apply
> pistons.
>
> The pump was replaced and puts out +300 psi during testing.
>
> The overdrive and trans was tested by back spinning from the tailshaft
> flange with an electric motor.
>
> The overdrive appears to be engaged and it appears that the pressure will
> not drop.
>
> The pressure relief at the pump was removed and the accumulator was
> loosened to relieve the pressure.
>
> Now trans in neutral the output shaft of the overdrive appears to be
> locked up and will not spin.
>
> Any ideas??
>
> Thanks in advance
>
> Glenn
>
>
>
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