BENDIX TCH-003-002 User Manual
E-7 Dual Brake Valve
B-W Pc. No. 282410
Ford Part No. DOHA 2A 270-C
1. The E-7 Dual Brake Valve is a suspended pedal, firewall mounted, foot operated
dual brake valve with two separate supply and delivery circuits for service and
emergency braking. An air manifold is bolted to the back of the valve to
accommodate the piping. Sealing of the ports between the manifold and valve is
accomplished with the use of o-rings.
emergency braking. An air manifold is bolted to the back of the valve to
accommodate the piping. Sealing of the ports between the manifold and valve is
accomplished with the use of o-rings.
The E-7 Dual Brake Valve is similar in operation to that of the E-4 Dual Brake Valve
in that the primary portion of the valve is mechanically operated by the pedal, and the
secondary portion of the valve is pneumatically actuated by primary circuit delivered
air pressure acting on a relay piston.
in that the primary portion of the valve is mechanically operated by the pedal, and the
secondary portion of the valve is pneumatically actuated by primary circuit delivered
air pressure acting on a relay piston.
If loss of primary air supply occurs, extended treadle travel and mechanical force will
actuate the secondary portion of the E-7 Dual Brake Valve. The primary circuit of the
brake valve is supplied by No. 1 Reservoir, and the secondary circuit is supplied by
No. 2 Reservoir.
actuate the secondary portion of the E-7 Dual Brake Valve. The primary circuit of the
brake valve is supplied by No. 1 Reservoir, and the secondary circuit is supplied by
No. 2 Reservoir.