Re: [AMC-List] AMC-List Digest, Vol 5, Issue 55

[Tom Jennings <tomj@xxxxxxx>]

On Wed, 28 Jun 2006, Jim Boone wrote:

> I'm not sure I'm understanding you guys;  Should the adjustable 
> proportioning valve - aka Wildwood or whatever the brand is - be IN ADDITION 
> to the stock AMC proportioning valve?  You just junction the line to the 
> rear brakes AFTER it goes through the stock one?  Or, should I try and 
> remove the stock one alltogether?

That thing everyone calls the "proportional valve" often isn't
a proportional valve. Its often just a junction block with
the brake-pressure-imbalance switch in it. When it's *also*
a prop. valve, I think AMC calls it a "combination block".

When it is a prop. valve, it's not adjustable.

If you don't have one at all, don't bother to add one, just
get the aftermarket job.

If you have the switch-only block, you may be able to bolt in
the combo valve, but I'm not sure if they have all the holes
in the same place.

I am using the non-proportional-valve block with Bendix disk
brakes and rear drums. But since I plumbed all new brake line
from scratch, I  should have done it the plain old fashioned way,
from the master cyl to the rear wheels, period.

The irony for me is, I never found the required connector for
the brake-fail switch, so it's not even connected. Just gotta
clip one off some AMC-anythin at U-Pull-It, but I always forget.


> 
> The brake warning light is coming off of the stock PPV?
> 
> Jim Boone
> Mims, FL
> 
> >Date: Tue, 27 Jun 2006 11:35:47 -0700
> >From: Tom Jennings <tomj@xxxxxxx>
> >Subject: Re: [AMC-List] Brake balance valve
> 
> >On Tue, 2006-06-27 at 10:49 -0700, russ hathaway wrote:
> > > So Brian, do I understand that if I don't care for the
> > > warning light (when I run into that semi I will know
> > > the brakes failed) I can just do without that doo dad.
> > > I would like to hook up my brake sending unit off that
> > > first junction, then get an adjustable prop valve like
> > > all them big city hot rods have.....Russ
> >
> >Yup. I now wish I had done just that when I replumbed the brakes in my
> >Hornet; I recreated the factory setup (with later model brake-imbalance
> >switch setup). I should have just plumbed it without that silly valve,
> >it would have saved a lot of clutter and inconvenient brakeline bending.
> >
> >The check valve in the master cylinder provides the held-pressure for
> >the rear drum brakes.
> 
> 
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