I've found that the adjustment of the actuating lever at the overdrive
solenoid is where the cause of not operating comes from. Make sure that lever
does not rest too far back on the stop. There needs to be rubber bumper (or
something) there.
On Oct 31, 2013, at 3:57 PM, John Sims wrote:
> From one of the manuals on my site:
>
> The correct pressure is 350 - 370 psi for the early units and 450 psi for
> the later unit (models 22/1753 & 22/1985). When the OD switch is
operated,
> the pressure should drop and then recover in a couple seconds. If the
> pressure doesn't drop and the OD doesn't engage, there is probably an
> electrical or operating valve adjustment problem --- see previous
> discussion. If everything seems to operate properly but the pressure is
> low, then the accumulator spring is probably weak.
>
>
> Several long manuals on my site on the Technical page, Overdrive section.
> Some of the reference various TR models but the OD is the same unit as in
> our cars.
>
> John Sims, BN6
> Aberdeen, NJ
>
> www.healey6.com
>
> -----Original Message-----
> From: healeys-bounces@autox.team.net
[mailto:healeys-bounces@autox.team.net]
> On Behalf Of john spaur
> Sent: Thursday, October 31, 2013 6:30 PM
> To: healeys@autox.team.net
> Subject: [Healeys] Overdrive pressure
>
> I am trouble shooting the overdrive. There is about 350 psi when I am
> driving the car but the OD is not engaged. Is this normal? Also the
pressure
> drops to about 330 psi when the oil is hot.
>
> The OD does not engage but the electrical system, relays, switches, etc.
and
> solenoid operates as it should.
>
> John Spaur
> '62 BT7
> Unsubscribe/Manage:
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