I have confirmed I have the rear port on the P30 connected to the rear
brakes. Tested pressure again. Got 800 rising to 900 when holding on the
rear MC port. 500 steady at the rear output of the combination valve.
Did not have parts to test at the input of the valve.
Neil
On 7/19/15, 4:06 PM, "Gmclist on behalf of A."
wrote:
> Neil Fonville wrote on Sun, 19 July 2015 15:34
>> I'm going out later today to visually confirm the rear port of the MC
>> is plumbed to the read port of the combining valve. I'm fairly certain
>> it
>> is but I'm going to double check.
> Every possible next step hinges on that determination.
>
> The combination valve for disk brakes is not really a valve at all. It is
> a junction/distribution point with a differential switch. If there was no
> requirement for the differential switch, it could be replaced with a
> splice for the rears and a tee for the fronts. Not much to go wrong that
> can
> cause a pressure differential inside it. Same for the steel lines. If the
> line is 800 pounds at the master cylinder and 500 pounds coming out of the
> "valve", this is a head scratcher.
> --
> '73 23' Sequoia For Sale
> '73 23' CanyonLands For Sale
> Upper Alabama
> On "marriage equality": Once you define the direction that society is
> headed as "forward", you can call it progress.
>
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