83 c10 proportioning valve ?

[john ward]

Is there any rubber parts in the valve as i have to replace all rubber parts in brake system as someone has mixed the type of fluids and lots of jelly crap.

 

[bucket]

I think there is? I can gut one to see...

 

[john ward]

Hi thanks i have been looking at some diagrams looks like they have o rings inside but not sure, so looks like have to get a new one will try rock auto first..

 

[Frankenchevy]

My old one had o rings.

 

[Blue Ox]

If you're talking about the combination valve, on my '85 they are cup seals and one face seal. Good luck finding them. GM says the valve is non serviceable and must be replaced as a unit. And, of course, it's NLA.

 

[john ward]

Blue Ox thanks mate thought it may be problem to rebuild so ordered new one, and all new stuff for the rest of system not going to take a chance.

 

[Lowered87]

I am redoing my brakes from front to back. I tried to service my proportional valve but could not find a kit. There are many different versions for sale, both OEM and aftermarket. I used an adjustable Wilwood combination proportioning valve because it allows adjustment of the rear brakes. With this you can use drums and then later switch to discs. It also allows having different sized brake lines in preparation for disc brakes. Wilwood also recommended residual pressure valves to make the brakes more responsive. Still installing so I do not have a report on how it functions. I will update later.

Wilwood combination proportioning valve part #: 260-11179
Wilwood residual pressure valves part #: 260-13706 and 260- 13707