Brake Distribution Valve & Switch

Fig. 12 Distribution Switch. Diagonally Split Brake System:

Fig. 16 Brake Distribution Switch. Normal:

DESCRIPTION
This switch assembly, Fig. 12. is used on some diagonally split brake systems and Corvette four wheel disc brake systems. It is connected to the outlet ports of the master cylinder and to the brake warning lamp and warns the driver if either the primary or secondary brake system has failed.

OPERATION
When hydraulic pressure is equal in both primary and secondary brake systems, the switch remains centered, Fig. 13. If pressure fails in one of the systems, the piston moves toward the inoperative side, Fig. 14. The shoulder of the piston contacts the switch terminal, providing a ground and lighting the warning lamp.