[Healeys] Overdrive and RPM

[Michael Salter]

Ok that makes sense.
My guess is that either the operating valve needs adjustment (go by the lift
of the ball rather than the position of the lever) or the pump pressure is low
probably due to a worn or damaged accumulator.
Try adjusting the valve first if that doesn't work you need to check the
pressure.
Michael S

-----Original Message-----
From: "john spaur" <jmsdarch at sbcglobal.net>
Sent: b2013-b08-b19 7:13 PM
To: "Michael Salter" <michaelsalter at gmail.com>
Cc: "healeys at autox.team.net" <healeys at autox.team.net>
Subject: Re: [Healeys] Overdrive and RPM

At 3100 RPM when I flip the OD switch it does not seem like the OD
engages until after I back off on the accelerator. It seems like I
need to accelerate and decelerate to get it to engage. Once I know it
is engaged it seems to stay engaged until I turn it off and then
punch the accelerator. Then I can feel it disengage. The difference
in RPM's is not a lot because I have a 3.54 diff.

John Spaur

At 01:40 PM 8/19/2013 -0400, Michael Salter wrote:
>Hi John,
>For good diagnosis we need one more piece of information..
>When the overdrive is engaged and you are doing 3100 RPM is the
>speed of the car higher than when the overdrive is not engaged at 3100 RPM.
>I suspect not and that the overdrive is not actually "engaging"
>until you lift off the throttle.
>If that is the case then the cause can be as simple as maladjustment
>of the overdrive operating valve or as complex as low oil pressure
>in the overdrive or even worn cone clutch linings.
>
>Michael S