MS to prop valve help

[roy c]

Thanks for the response, Quick note I have the duel reservoir MC
I looked inside both outlet's the front reservoir has a larger hole
than the rear reservoir. so did the prop valve the top rear was larger than the top front indicating to me that the MC front goes to the prop valve top rear and the MC rear goes to the top front Prop valve. Never new much on how those prop valves worked. thanks for your help

 

[v2500burb]

I have noticed loss of brake fluid and a small leak on the passenger front of my burb
Haven't had a chance to look
Any thoughts?
Prop valve gone bad?
It's not near a wheel either?


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[v2500burb]

Oh
And once in a while at the first stop after starting
The brakes will lock


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[Georgeb]

I have noticed loss of brake fluid and a small leak on the passenger front of my burb
Haven't had a chance to look
Any thoughts?
Prop valve gone bad?
It's not near a wheel either?


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Gotta get under and take a look. Could be a hose or a pin hole in a line.
What brake or brakes lock?

 

[Keith Seymore]

Sorry to be joining late:

The way GM did lines changed over the years, and might have something to do with the weight rating too. Some of mine have the front port to the rear circuit, while others have the front port to the front circuit.

This was done for hood clearance.

In every case the larger reservoir feeds the front brakes, because the large pistons in the disc brake setup require more fluid displacement to operate.

When possible the larger reservoir would be placed in the front to feed the front system (as you would expect), but on some passenger cars, or vans (remember the M/L Astro/Safari?) the reservoir could not package under a heavily sloped hood so the front system was moved to the back of the m/c.

K