[Healeys] overdrive problem

[WILLIAM B LAWRENCE]

In order to kick down you have to turn the OD switch off. The throttle switch is meant to keep you from disengaging the overdrive while the throttle is closed. Austin and DHM felt that put too much stress on the drive train. You have to open the throttle to get Revs up before the OD will disengage.

Bill Lawrence
BN1 #554
________________________________
From: Richard Kahn <tahoehealey at hotmail.com>
Sent: Friday, March 26, 2021 4:52 AM
To: Bob Haskell <rchaskell at earthlink.net>; Bill Lawrence <ynotink at msn.com>; healeys at autox team. net <healeys at autox.team.net>; Oudesluys <coudesluijs at chello.nl>; David Porter <frogeye at porterscustom.com>
Subject: Re: [Healeys] overdrive problem

Interesting that he calls for non detergent oil. We have had this discussion often in the past. That has always been my preference.

________________________________
From: Bob Haskell <rchaskell at earthlink.net>
Sent: Thursday, March 25, 2021 7:31 PM
To: Richard Kahn <tahoehealey at hotmail.com>; Bill Lawrence <ynotink at msn.com>; healeys at autox team. net <healeys at autox.team.net>; Oudesluys <coudesluijs at chello.nl>; David Porter <frogeye at porterscustom.com>
Subject: Re: [Healeys] overdrive problem

Yes.  The throttle switch keeps the overdrive engaged when the dash
switch is turned off.  The overdrive will disengage when the throttle is
partially depressed.

http://www.team.net/www/healey/tech/big_hly/od/adj_trblsht_od.html

Cheers,

Bob Haskell
Austin Healey 3000 BN7/BT7 registrar

On 3/25/21 9:39 PM, Richard Kahn via Healeys wrote:
> But isn't that only if the dash switch is off? That is how my OD
> disengages.
>
> ------------------------------------------------------------------------
> *From:* Healeys <healeys-bounces at autox.team.net> on behalf of David
> Porter via Healeys <healeys at autox.team.net>
> *Sent:* Thursday, March 25, 2021 5:18 PM
> *To:* Bill Lawrence <ynotink at msn.com>; healeys at autox team. net
> <healeys at autox.team.net>; Oudesluys <coudesluijs at chello.nl>
> *Subject:* Re: [Healeys] overdrive problem
>
> Well, actually that is the job of the throttle position switch on the
> firewall. If the OD is engaged, mashing the gas pedal should make the
> OD to drop out.
>
>
>
> On March 25, 2021, at 5:11 PM, WILLIAM B LAWRENCE via Healeys
> <healeys at autox.team.net> wrote:
>
>
> Sorry, but the Laycock deNormanville overdrive is not supposed to kick
> down automatically. The most common fault that causes the OD to drop
> out is faulty o-rings on the accumulator sleeve. This won’t allow the
> OD to build full operating pressure.
>
> Bill Lawrence
> BN1 #554
> ------------------------------------------------------------------------
> *From:* Healeys <healeys-bounces at autox.team.net
> <mailto:healeys-bounces at autox.team.net>> on behalf of Kees Oudesluijs
> via Healeys <healeys at autox.team.net <mailto:healeys at autox.team.net>>
> *Sent:* Tuesday, March 23, 2021 7:37 AM
> *To:* healeys at autox.team.net <mailto:healeys at autox.team.net>
> <healeys at autox.team.net <mailto:healeys at autox.team.net>>
> *Subject:* Re: [Healeys] overdrive problem
> That is the way it should be when accelerating hard, Kick down!!
>
> Kees Oudesluijs
>
>
> Op 23-3-2021 om 01:06 schreef healeymanjim via Healeys:
> > friends BT7 had o/d quit.  solenoid was bad so replaced it.  now it
> will go into o/d but pop out when accelerating.   any
> > ideas what the cause is and the fix?
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