Bleeding brakes-pedal pressure problem. Could use some advice/suggestions

[Kurt in NJ]

Those “big things” are usually in the end of the bore of single master cylinders.
Most of the dual master cylinders don’t have residual pressure valves — there was a change in the wheel cylinders— instead of just a spring a tapered expander was added to the spring to put pressure on the edges of the cup to keep them in contact with the walls of the cylinder taking over the function of the residual pressure valve.

[glennpm]

Originally Posted by Kurt in NJ

Those “big things” are usually in the end of the bore of single master cylinders.
Most of the dual master cylinders don’t have residual pressure valves — there was a change in the wheel cylinders— instead of just a spring a tapered expander was added to the spring to put pressure on the edges of the cup to keep them in contact with the walls of the cylinder taking over the function of the residual pressure valve.

The wheel cylinder expander spring coils were not used on the early Fords.
There use and exclusion of a check valve in the master cylinder has in many cases been moved to a brake line manifold, So each arrangement needs to be checked for "Where is Waldo (RCV )"?


This table which I just found on HAMB is a great reference.
https://www.jalopyjournal.com/forum/.../watch-confirm


Glenn