[Healeys] OD Problem?

[Mike Tobin]

Hit the OD with a hammer once and the problem went away.
Ran up the pressure again and the problem was back.  This time it took a
number of pretty good whacks to get it unstuck.
Pressurized it a third time and now it won't unstick after a lot of good
whacks.  I'm reluctant to hit it any harder.
Unless there are any other ideas, I guess the damn thing comes out and
apart again.
Cheers,
Mike

On Tue, Aug 20, 2019 at 8:01 AM Chris Dimmock <austin.healey at gmail.com>
wrote:

> Nah.
> Just tap the steel ring in the overdrive with your knock off hammer to
> release the springs.
> Works every time. For me anyway.
> The springs release the overdrive, and sometimes, they get just get stuck.
> It's a mystery of the world.
> But a few taps on that steel plate seems to realign the planets. And
> release those pesky springs!
> Allegedly.
> Worked for me. 3 times in the past 35 years. Mostly when I'd driven the
> car hard.
> But it seems to fix the issue, when you can't select reverse.
> And it's so much easier on the bench, than on your back, lying under the
> car!
> Best
> Chris.
>
>
> On 20 Aug 2019, at 10:20 pm, Michael Salter <michaelsalter at gmail.com>
> wrote:
>
> Hi Mike,
> I recently experienced exactly the same problem with newly rebuilt a BT7
> side shift gearbox and overdrive unit when turning it backwards before
> adding oil.
> Like you I suspected the Sprague clutch but after considerable
> investigation the cause turned out to be the new 2nd gear syncro ring
> which, when the box was turned backwards, was winding itself tightly onto
> the cone of 2nd gear.
> This is something I've never experienced before but concluded that it was
> unlikely to present a problem after the box has be run with new oil.
> This may not be the cause in your case but certainly it is something worth
> considering.
> M
>
> On Mon, Aug 19, 2019, 10:54 PM Mike Tobin, <ahbt71 at gmail.com> wrote:
>
>> Hello Again,
>>
>> Finally got oil pressure in the rebuilt OD.  With the car in 4th it shows
>> about 500 psi on a gauge.
>> However, I noticed when reattaching the drive shaft that with the trans
>> in neutral the output won't rotate in the reverse direction.  It rotates
>> easily by hand in the forward direction.  This is true before and after the
>> pressure has been released.  Before getting pressure in the OD it rotated
>> by hand in both directions.  I haven't tried to engage the OD.   It's a
>> hard mechanical stop.  I'm afraid the one-directional clutch be engaged and
>> I don't want to break anything.
>>
>> I've been a long time gone from this fine place.  Life's taken a lot of
>> twists and turns, but it's good to be getting back to having to come here
>> for help.
>>
>> Thanks and Cheers
>> Mike Tobin
>> Townsend, Montana
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