GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.

Home » Public Forums » GMCnet » Correct (and hopefully NON-leaking) brass combination valve? (GM 1257177 / AC Delco 172-1350?)
Re: [GMCnet] Correct (and hopefully NON-leaking) brass combination valve? [message #358701 is a reply to message #358698] Wed, 16 September 2020 18:40 Go to previous messageGo to previous message
Ken Henderson is currently offline  Ken Henderson   United States
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma:
Senior Member
Well, I did get to learn at least one thing today! I didn't even think
about the 2 psi "hold on" pressure for the discs -- thinking back, that's
probably a second purpose for the little relief valve actuated by the pin
on the front of the combination valve. But the only "Brake Light" I can
find actuated by the differential pressure switch is that connected to pin
E on the instrument cluster -- not those on the rear of the coach, which is
what I first thought John was telling us about. But John's right about
that being a second function because the REALLY important one is shutting
off the non-functional brake system to limit fluid loss -- IIRC.

Ken H.



On Wed, Sep 16, 2020 at 7:12 PM John R. Lebetski via Gmclist <
gmclist@list.gmcnet.org> wrote:

> Ken on #2 besides toggling the valve if one side fails it also grounds the
> brake light to come on. So 2 is really 2 things if that’s what you meant.
>
> Also to comment on the price from the other post, he’s selling below.
> MSRP.
> --
> John Lebetski
> Woodstock, IL
> 77 Eleganza II
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org


Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: [GMCnet] Transmission pan leaks
Next Topic: Rooftop Air
Goto Forum:
  


Current Time: Sat Oct 05 00:02:58 CDT 2024

Total time taken to generate the page: 0.01306 seconds