Forum Discussion

atsrmf's avatar
atsrmf
Explorer
Dec 03, 2017

Load sensing proprtioning valve

I have a 1987 Gulfstream 27' El Capitan. I bought it recently, and discovered that the load sensing proportioning valve has been disabled and does not function. I am getting no brake fluid pressure past the valve, but have it up to the valve. The driveline is a Ford 460 with a C-6 automatic.
Is this valve serviceable? Does anyone have a diagram of one in service? It seems the actuating lever is missing. I am tempted to put a manual valve in with a knob that adjusts the pressure versus the load sensing feature. My guess is this valve isn't available anymore. Any help would be appreciated.
Class A
  • Jim's avatar
    Jim
    Explorer
    Dec 03, 2017
    Is this part of the braking system? If so, there's a long history of manufacturers molding a casting number into the part when it's a brake part. Where your missing actuating lever was might have been previously attached to one of those parts.

    So look for a casting number, than google it.
  • Executive45's avatar
    Executive45
    Explorer III
    Dec 04, 2017
    Personally, I wouldn't replace it with a manual one. Messing with the brake system could have dire consequences for you and others on the road. There was a reason the mfg designed your system that way. Your coach isn't so old that replacement parts can't be found. Google is your friend. If not, visit a reputable brake shop and ask them....Dennis
  • atsrmf's avatar
    atsrmf
    Explorer
    Dec 09, 2017
    I ended up buying a new valve, I found one on EBay. The part is no longer available, and this was the only one I could find. I paid dearly, but what price can you put on good brakes? I still need the linkage, does anyone know of a motorhome junkyard or know someone who sells used parts? The linkage is much more simple that the valve.

About Motorhome Group

38,705 PostsLatest Activity: Jan 14, 2025