[Healeys] Overdrive

John Spaur jmsdarch at sbcglobal.net
Mon Mar 6 22:24:50 MST 2017



I don’t fully understand the issue. My experience with OD’s is that the lever could be misadjusted if it lines up with the hole. Counter intuitive I know, but parts wear. That said, when driving, to disengage the OD once the switch has been turned off one needs to quickly punch the gas pedal. That causes it to disengage.



6’2 BT7


From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of Fred Wescoe
Sent: Monday, March 6, 2017 5:08 PM
To: healeys <healeys at autox.team.net>
Subject: [Healeys] Overdrive




In a previous post, I related problems with my 66 BJ8 overdrive not working/releasing properly  


The electrical issues have now been solved and the electrics are working correctly.


The remaining issue is still the release of the overdrive.  The operating lever is properly adjusted now with the hole in the lever lining up with the hole in the case.  The operating solenoid/lever engages strongly every time and the two holes on the right side always line up.


However, when the switch is turned off, the gear selector moved to neutral and the gas pedal pressed, the solenoid is deactivated (as indicated by a volt meter) but the lever does not release.  I have removed and cleaned the operating valve pushrod and reinstalled it.  With the plug removed I can see the spring jump when the overdrive is switched on.


At first I thought that the solenoid lever was rubbing against the trans case and not allowing the solenoid lever to release.  But that is not what is happening (I checked both sides of the trans).  When I apply the slightest pressure to the solenoid lever (at the solenoid), the lever drops down into the off position.  Time after time this is happens.  The valve operating shaft gives a very slight resistance to moving initially and does not want to release by it's self.  After the very slightest pressure on the lever, the lever moves easily and drops to the released position.


No matter what I do I cannot get the solenoid lever to drop down on it's own.  With just the slightest touch it does drop down.  I loosened the solenoid unit so that it was sort of free floating but no change at all no matter what I did or how I moved it.  I removed and cleaned the solenoid and plunger.  Is it possible that something inside the trans is binding the actuating shaft/lever?


I am really frustrated with getting the overdrive to work properly.  Any thoughts would be greatly appreciated.






66 BJ8

63 BJ7 deceased

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