[Healeys] O/D slipping - update

[jerry wall]

steve,
see if you can find del borders excellent od rebuild articles that appeared
in Healey Marque some 15 or so years ago.  follow his tips for shimming
etc. and your unit will be better than new. He also discusses minimum
pressures etc. i thought i had these on my computer, however, can't seem to
locate.
cheers,


On Tue, Jan 21, 2014 at 5:02 PM, BJ8Healeys <sbyers at ec.rr.com> wrote:

> Hello, Healeyphiles -
>
>
>
> A few weeks ago I reported a slipping in my overdrive.   Conventional list
> wisdom said it was probably low oil pressure, although the overdrive was
> engaging immediately when I flipped the switch and seemed to slip only when
> I accelerated more than gently in third gear.  I suspected the sliding
> clutch linings were worn out.
>
>
>
> I bought a pressure gauge from Jay Holekamp and today was a nice enough day
> that I could take the car out for a test drive (top down, of course, here
> in
> the Southland, but I'm not gloating).  The results:
>
> I'm getting a maximum of 365 psi.   If I have O/D selected, when I go
> through 3rd gear the pressure drops immediately to about 100 psi, I hear
> the
> 'whizzing" sound,  and then the pressure comes back up to 365 as the O/D
> engages.  Once engaged, it does not slip.
>
>
>
> When I got home, I drained the oil and began the process of pulling the
> gearbox and O/D out of the car.  Magnus Karlsson recommends that I plan on
> replacing those components controlling oil pressure, so I guess I will do
> that whether or not I need a new sliding clutch, too.
>
>
>
> Steve Byers
>
> HBJ8L/36666
>
> BJ8 Registry
>
> Havelock, NC
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-- 
jerry wall  BN6
rowlett, tx