Brake Proportioning/Combination Valve
PRESSURE SPECIFICATION TABLE^ With master cylinder pressure @ 356 psi (2453 kPa) the rear brake pressure should be 356 psi (2453 kPa).
^ With master cylinder pressure @ 641 psi (4418 kPa) the rear brake pressure should be 441 psi (3044 kPa).
^ With master cylinder pressure @ 1,424 psi (9818 kPa) the rear brake pressure should be 669 psi (4615 kPa).