> New question
> I have just completely rebuilt a gearbox and overdrive for a
> friend, run the
> car and no overdrive. Now this is something that has never happened before
> and I have done several over the last decade or so. This one is a J type
> unit, it has had a new cone clutch and o rings throughout, the only thing
> that went wrong was a supplier error left us without the gaskets for the
> brake band, so we created some from gasket paper, slightly
> thicker (about a
> third extra before compression compared to a used gasket) but I have done
> this in the past with no detrimental effects.
>
> Things that happen:
> The switch works the solenoid,
> The solenoid clicks back and forth,
> If anything happens at all it is after several miles (8 to 10) driving and
> you get neutral through the overdrive.
Graham, I'm by no means an expert on the J-type. However the parts diagram
shows a sprag clutch just like the A-type, which does not depend on
hydraulic pressure. If you get 'no drive' through the OD, the sprag clutch
is not working and a tear-down is indicated.
Randall
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