<VV> 69 brake system diagram?

[Bryan Blackwell]

This explains why I had brakes on the story I related - the '65 has a complete '69 master cylinder and plumbing installed with that valve.

We might have another thing to save off any dual master cylinder cars that get parted out.  Not that they are very common in junkyards anymore, but I'll bet that part is common to other drum/drum GM cars of the late '60s and early '70s.

--Bryan

On Aug 31, 2010, at 8:43 PM, Dennis Pleau wrote:

> When one system loses pressure, the pressure from the side that didn't lose
> pressure pushes the shuttle valve from the high pressure system to the low
> pressure system and the valve closes off the outlet of the valve on the low
> pressure side.  In the case of blowing a line on the primary side, the
> shuttle valve closes the line off 6" from the master cylinder hopefully
> before the blown line or cylinder.  When the shuttle valve closes off the
> blown primary circuit, there should still be enough fluid in the primary
> side of the master cylinder to maintain the fluid coupling in the master
> cylinder.