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SD-03-818
Bendix
®
E-7
Dual Brake Valve
The primary circuit portion of the valve is similar in oper-
ation to a standard single-circuit air brake valve, and under
normal operating conditions the secondary circuit portion
is similar in operation to a relay valve.
The primary circuit portion of the valve is part of a re-
movable cage which also houses the relay piston and the
cage which can be removed without removing the entire
brake valve.
Both primary and secondary circuit portions of the E-7
dual brake valve use a common exhaust protected by an
exhaust check valve.
DESCRIPTION
The Bendix
®
E-7
dual brake valve is a suspended,
pedal-operated type brake valve with two separate supply
and delivery circuits for service and emergency braking,
which provides the driver with a graduated control for
applying and re leasing the vehicle brakes.
The circuits in the E-7
dual brake valve are identi ed as
follows: The primary circuit portion is that portion of the
valve between the spring seat which contacts the plunger
and the relay piston; the secondary circuit portion is that
portion between the relay piston and the exhaust cavity.
SECONDARY
DELIVERY
PRIMARY
DELIVERY
PRIMARY
SUPPLY
SECONDARY
SUPPLY
MOUNTING
PLATE
FIGURE 1 - E-7
DUAL BRAKE VALVE
SECONDARY
DELIVERY
SECONDARY
DELIVERY
PRIMARY
DELIVERY
PRIMARY
SUPPLY
SECONDARY
SUPPLY
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Shrnutí obsahu

Strany 1 - Dual Brake Valve

1 SD-03-818Bendix® E-7™ Dual Brake ValveThe primary circuit portion of the valve is similar in oper-ation to a standard single-circuit air brake valve

Strany 2 - OPERATION

2OPERATIONAPPLYING: NORMAL OPERATION - PRIMARY CIRCUIT PORTIONWhen the brake pedal is depressed, the plunger exerts force on the spring seat, rubber g

Strany 3

3FIGURE 2 - E-7™ DUAL BRAKE VALVEINLET-EXHAUSTASSEMBLY (1)RETAINER (17)O-RING (2)O-RING (3)RELAY SPRING (5)O-RING (11)O-RING (9)O-RING (12)RETAINER (1

Strany 4 - SERVICE CHECKS

4E-7™ valve not meet the elements of the operational tests noted in this document, further investigation and service of the valve may be required.Ever

Strany 5 - REMOVAL (IF NECESSARY)

5When the treadle is fully applied, the reading on the test gauge should fall off to zero promptly when the application is released. It should be note

Strany 6

6DISASSEMBLY (UPPER STATIC PISTON ASSEMBLY) 1. Remove o-rings (2) and (3).2. Remove retaining ring (17), and remove secondary circuit inlet exhaust

Strany 7 - INJURY OR DEATH:

7When the treadle is fully applied, the reading on the test gauge should fall off to zero promptly when the application is released. It should be note

Strany 8

8BW1428 © 2008 Bendix Commercial Vehicle Systems LLC. All rights reserved. 11/2008 Printed in U.S.A.

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