The pressure in the system is about 250 PSI (assuming this is the same pump
as used by Packard). Remember that the solenoid valve has to resist
pressure in either direction - this may not be what the ones you are looking
at are designed to do, it is an unusual requirement.
I used the same neoprene rubber that I use for everything I fix around here
that needs rubber seals - it is happy with just about anything in the way of
automotive fluids. I assume Buna-N is as good or better.
I have never attempted a rebuild of a solenoid from one of these. As you
know, it is a simple coil of wire wrapped around a moveable armature, but
opening it to find the problem might be a ticket to disaster, I never
looked.
Dick Benjamin
----- Original Message -----
From: KerryPinkerton <pinkertonk@xxxxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Tuesday, June 25, 2002 10:19 AM
Subject: Re: IML: Fw: solenoid 6V More ?
> Thanks to everyone who has chimed in on this thread.
> Let me summarize what I think I know and have
> discovered.
>
> 1- Stay with Dot 3
> 2- Probably no fire risk
> 3- Buna-N "Provides excellent resistance to solvents
> and oils" according to the McMaster-Carr catalog so
> I'd think it would work OK.
> 4- The solenoid is one way only so this is the right
> type solenoid/valve, ie a binary operation for my
> computer inclined mind, on or off. Open to allow
> fluid to flow and closed to hold it in whatever
> position it is in.
> 5- Brake fluid leaks would be a pain but not the end
> of the world as they only place for it to exit would
> be the bottom of the door onto stainless trim.
> 6- TWO of my cylinders have failed solenoids and
> rebuilding them is not feasible as far as I can tell.
>
> 7- Dick commented that he had rebuild similar
> cylinders and converted the seals to support trans
> fluid to protect against future paint issues. I'd
> rather not do that unless I have no other choice.
>
> The remaining question is the pressure. At 105 PSI,
> is it stout enough to handle the pressure generated by
> the pump. Anyone got any idea what kind of pressure
> we are dealing with? I guess I could put a guage on a
> line and measure it. but I would not think it would be
> that high.
>
> At this point I am probably going to try and rig
> something up using this solenoid IF I do not find a
> couple cylinders at Carlisle in a couple weeks.
>
>
> Kerryp
> --- Matt Hopkins <mhoppy@xxxxxxxxxxx> wrote:
> > Henry had the following to say after further study
> > and research. Does anyone have a diagram? If we
> > could get Henry a copy I bet he could develop a
> > solution t the problem.
> >
> >
> > ----- Original Message -----
> > From: Henry Phelps
> > To: Matthew Hopkins
> > Sent: Tuesday, June 25, 2002 11:43 AM
> > Subject: sol
> >
> >
> > Matt, after the first note I looked up this valve
> > number in the McMaster-Carr catalog and find the
> > operating pressure is 105 pounds which is probably
> > not high enough. The guy also needs to research the
> > system characteristics as to pressure, how many
> > outlets, whether it has to work both ways, etc. so
> > he comes up with the right solenoid for the job. If
> > he has a system diagram it would help.
> > Henry.
> >
>
>
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