Dick are you sure about the 300psi. The original
cylinders and hoses don't look like much. Much less
robust than brake lines. In fact, an early repair
used compression fittings to splice a line in. It was
holding fine and due to the condition of the line, had
been in place for quite a few years?????
Kerry
--- Dick Benjamin <DickB@xxxxxxxxx> wrote:
> I wouldn't worry too much about it, as there should
> be no spark created
> within the device (the only spark is at the switch
> contacts). If the
> solenoid should stick on for some reason, it could
> get warm, but without
> knowing the current draw, I couldn't guess at how
> warm.
>
> The solenoids are not the usual failure point for
> these cylinders, the usual
> failure is leakage past the piston cup. I have
> peeled the crimp open and
> replaced the piston seals on these, for a cheap and
> easy, if somewhat messy
> looking repair. I have also converted all my cars
> with hydraulic cylinders
> to the use of Dexron/Mercon fluid, to avoid the
> damage caused by brake fluid
> leaking on painted or upholstered surfaces. One
> must replace all the
> system's rubber parts when making this changeover,
> though, as the old rubber
> parts will have swelled up somewhat from the alcohol
> in the brake fluid.
> When that is gone, they start leaking. Don't change
> to Dot-5 fluid, by the
> way, as that has no lubricity and will ruin the
> hydraulic pump in short
> order.
>
> The solenoid must be capable of resisting fluid
> pressure of 300PSI, because
> when the pump is running, there is pressure to all
> cylinders; only those
> with the solenoid energized must allow fluid to
> flow. Then when the pump is
> not running (for instance when the window is being
> lowered), the solenoid
> must present a low resistance to flow back to the
> pump, so that the spring
> can pull the window down.
>
> Dick Benjamin
> ----- Original Message -----
> From: KerryPinkerton <pinkertonk@xxxxxxxxx>
> To: IML <mailing-list@xxxxxxxxxxxxxxxx>
> Sent: Tuesday, June 25, 2002 5:54 AM
> Subject: IML: Fire possibility from 6V solenoid??
>
>
> > Ok, all you EE types, I have a serious question.
> > Steve Charette found a 6V solenoid in the
> > McMaster-Carr catalog. Thanks Steve, I missed it.
> >
> > http://www.mcmaster.com/
> >
> > Go to item # 4916K11
> >
> > This is a Pnuematic valve with Buna-N seals. It
> is
> > NOT designed for brake fluid. Here is the
> question.
> > If this thing were to leak, is there any danger of
> > fire from the solenoid energizing? I'd hate to
> burn
> > the Crown down.... Is there a non flammable fluid
> > that would subsitute?
> >
> > I'd THINK that if it will hold air, it will hold
> > fluid. This thing is only 24 bucks and I can
> build
> > the cylinder for next to nothing so it could be a
> good
> > solution for all of us with these hydralic windows
> > lifts.
> >
> > Your thoughts please.
> >
> > Kerry
> >
> >
> > __________________________________________________
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> >
> >
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