[Healeys] Intermittent OD failiure

Jim LeBlanc jim_leblanc at yahoo.com
Fri Aug 20 11:01:40 MDT 2010


More comments on OD adjustment. To make sure the solenoid is fully up, slack
off the 7/16 head (1/4 inch bolt) on the shaft. Then actuate the solenoid.
Holding the other side of the valve actuating rod, turn off the solenoid and
rotate the rod a little. Measure the valve actuation for the 1/32 in called
for.
 
Also intermittent failure can be caused by faulty "throttle Switch". So when
diagnosing, just bypass that switch. On my wiring diagram I move W1 to C2 on
the "Overdrive Relay"
 
Hope some of this helps
 
Regards,
 
Jim LeBlanc
1956 100-M

--- On Thu, 8/19/10, Mark LaPierre <lapierrem at sbcglobal.net> wrote:


From: Mark LaPierre <lapierrem at sbcglobal.net>
Subject: Re: [Healeys] Intermittent OD failiure
To: healeys at Autox.Team.Net
Date: Thursday, August 19, 2010, 3:08 PM


Resent email-----



> This is one of the many finicky areas of our LBCs.     Let me share my
findings.
>
> Trany tunnel off,
> new solenoid, new harness,  all components working as needed,  adjustment on
the side of trany done
> as  per manual.   Go for test drive with tunnel cover off and test
everything.  No OD operation.
> Go back to man cave and readjust operating valve on side. Now getting
intermittent OD.   Back to man
> cave and readjust again.  Now getting OD.
>
> My problem was the touchy , mind blowing ,  stress testing, adjustment of
the operating valve.
> Over time the operating parts start to wear and we need to over compensate
in this adjustment.
> If you are sure all else is working right then this is where I would look.
>
> The solenoid can be tested here too by turning on the key ,  flip the dash
switch ON and move the shifter into third or forth.
> The solenoid should click on and be at its highest level.
> Also at the same time when you turn off the dash switch the solenoid should
kick out AFTER  the
> the gas pedal is pushed down so far.   Don't leave the ignition switch on
too long.
>
> Good Luck,    when you get this going you have passed the Healey patience
and life time stress test.
>
> Mark
>
>
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