Re: 70 amx brake warning switch

[neprocap@xxxxxxx]

Sorry Tom, you must have not been paying attention as this switch assy. does exactly as described. The horizontal piston is actuated by pressure. If there is high pressure on one side and low on the other, the pressure forces the piston towards the low pressure side, which causes the piston to block the passage on the low side. This alows the brakes to work on the side that is not leaking and keeps the fluid from passing through the leaking side. As you can see, the dash light is not its only function. The name of this part can be found in the parts books..



On January 11, 2006 Tom Jennings wrote:

> On Wed, 11 Jan 2006 farna@xxxxxxx wrote:
> 
> > > To elaborate a bit, what it does is CUT fluid flow to the
> > failed side, that's why it's relatively close to the master
> > cylinder.
> 
> 
> !! Are you SURE of that?! I'm not sure there's even a point to a
> feature like that -- if you've already lost a lot of fluid,
> chances are the lost-fluid side already won't brake. Second, if
> it's job is to plug the low-pressure side to prevent more fluid
> loss, then even if you then pumped the brakes the diff. press. sw.
> would then be blocking the line!
> 
> I've also never heard of such a thing, though that could simply mean
> I haven't been paying attention all this time.





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