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Re: [Mgs] mgb overdrive

Subject: Re: [Mgs] mgb overdrive
Date: Thu, 15 Oct 2009 08:47:41 +0000 (UTC)
these people may be able to help you 


I've got an MGB with an LH overdrive that won't engage. No pressure on the 

gauge. Solenoid seems weak. Grounding is intermittent. Working under the car 

with power to the solenoid, I find that, with the solenoid cover removed, 

simply moving the solenoid housing will cause the plunger to be pulled in or 

dropped out. On the bench, the solenoid moves the plunger with very little 

force, hardly enough to pull it against its own weight. I've already tried a 

second solenoid with the same results. Of course I'm comparing it with an 

'A' type solenoid with which I'm more familiar. An 'A' type really snaps 

into place! 

So what kind of "pull" force should I expect? What current should the 

solenoid draw? How is the copper wafer on the bottom of the solenoid 

expected to contact earth through the oily film surrounding it? Where can I 

find this trivial data? Any ideas on how I might manually move the plunger, 

move the ball against its seat and then observe o/d pressure?? 


Ed Woods >>> 


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