[Healeys] Overdrive slow to engage when hot

[Austin Healey]

Maybe worn ball or seating/weakend spring at the valve.

G

2011/9/12 Thomas Willig <twillig at ruda.de>

> Gentlemen,
>
>
>
> I am facing the problem that the Overdrive on my BN2 is quite slow to
> engage  when the gearbox is hot. Here are the symptoms /parameters:
>
>
>
> 1.    I am using Penrite 30 gearbox oil -a non detergent oil
>
> 2.    I installed a OD pressure gauge that can be read when driving the
> car.
>
> 3.    Gearbox / Engine cold,  pressure is 490 Psi -Looks perfect to me
>
> 4.    OD engages faultlessly
>
> 5.    Gearbox / Engine warm (Engine Oil 200 F) OD pressure 360 Psi -Too
> low.
>
> 6.    The overdrive needs about 4-5 seconds to engage in other words the
> OD pressure takes that long to reach the 360 Psi again.
>
>
>
> ?  Am I facing a worn oil pump? Any advice what I can/should do.
>
>
>
>
>
> Best regards
>
>
>
>
>
> Thomas Willig
>
> BN2L-230649   01. Feb. 1956
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