Air step mercury switches

[Don Bradner]

Yes. On the drawings they are referred to as Mercury switches. There are two of
them, one at each end of travel. A flat piece of metal of course should be easy,
but looking at it, it appeared to me that the retracted position ended up behind
the back switch, while the forward position was even with the switch. I couldn't
visualize a metal shape that would make that work. The switches are moveable, so
it may not matter - just go flat and adjust the switches to match.

On 3/30/2007 at 10:11 AM jim riordan wrote:

>Don,
>
> I quite can't picture what you are talking about. Are you talking about
>the mini cherry switch?
> If so I beleive that it is a flat sheet of metal held by two nuts on the
>piston rod on either side, which makes contact with the cherry switch.
>
> Jim Riordan
> 88 WBWL XXV
> Stuart, Fl
>
>Don Bradner wrote:
> I guess nobody has any thoughts on this one? Earl got back to me
>this morning and said it wasn't a part he would have, but he would try to
>come up with drawings. Didn't sound too hopeful.
>
>On 3/29/2007 at 2:59 PM Don Bradner wrote:
>
>>The light which indicates that my step is extended began staying on last
>>week. A bit of investigation shows that the part which should contact the
>>mercury switches has broken off. It is attached to the end of the air
>>piston rod, and a small piece of it remains on the other side.
>>
>>I don't think it should be too hard to fabricate, but I don't know at all
>>what it looked like - flat piece of metal, z-pattern, or whatever.
>>
>>After studying the air step wiring diagram until my eyes want to cross I
>>think it looks like, with neither switch working, I may be having
>>continous power to the step solenoid in both extended and retracted
>>positions. Not a good thing.
>>
>>I put in a call to Earl, but didn't get a callback. Anybody have any idea
>>what that part looks like?
>
>Don Bradner
>90 PT40 "Blue Thunder"
>Eureka, CA
>
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Don Bradner
90 PT40 "Blue Thunder"
Eureka, CA