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1

®

SD-03-828

Bendix

®

 E-14

 Dual Brake Valve

DESCRIPTION

The E-14

 dual brake valve is a suspended-pedal foot valve

with two separate supply and delivery circuits. The valve
provides the driver with graduated control for applying and
releasing the vehicle brakes.

The circuits in the E-14

 dual brake valve are identified as

follows: The number one (primary) circuit is the portion of
the valve between the primary piston and the secondary
piston. The number two (secondary) circuit consists of the
area between the secondary piston and the exhaust cavity.

The supply, delivery, and exhaust ports of the E-14

 brake

valve are identified by designations cast into the valve body
next to the port. (See Figure 1). The primary supply and
delivery ports are located in the valve’s primary body, and
the secondary supply and delivery ports are located in the
secondary body.

EXHAUST SECONDARY DELIVERY

SECONDARY SUPPLY

PRIMARY

DELIVERY

PRIMARY

SUPPLY

FIGURE 1 E-14

 DUAL BRAKE VALVE

FIGURE 2 TYPICAL PIPING SCHEMATIC

QUICK RELEASE

VALVE

FRONT SERVICE

BRAKE CHAMBER

PRIMARY

CIRCUIT

E-14

 DUAL

BRAKE

VALVE

SECONDARY

CIRCUIT

DOUBLE CHECK

VALVE

TRAILER

CONTROL

VALVE

DOUBLE CHECK

AND

STOP LIGHT SWITCH

TO TRACTOR
PROTECTION

FRONT AXLE

SERVICE RESERVOIR

REAR AXLE

SERVICE RELAY

VALVE

REAR SERVICE

BRAKE CHAMBER

REAR AXLE

SERVICE RESERVOIR

Summary of Contents for E-14 DUAL BRAKE VALVE

Page 1: ...supply delivery and exhaust ports of the E 14 brake valve are identified by designations cast into the valve body next to the port See Figure 1 The primary supply and delivery ports are located in the...

Page 2: ...dy and enters the secondary piston cavity The air moves the secondary piston and opens the secondary inlet valve allowing the air from the secondary supply to flow out the delivery port APPLYING LOSS...

Page 3: ...IN THE PRIMARY CIRCUIT PLUNGER FORCE SUP 1 PEDAL FORCE SUP 2 EXHAUST DEL 1 DEL 2 AIR FLOW PEDAL FORCE PLUNGER FORCE SUP 1 SUP 2 EXHAUST DEL 1 DEL 2 DEL 1 RELEASING SECONDARY CIRCUIT When the brake pe...

Page 4: ...ed until the necessary repairs have been made and both braking circuits including the pneumatic and mechanical devices are operating normally If the brake valve does not function as described above or...

Page 5: ...air pressure from all reservoirs before beginning ANY work on the vehicle If the vehicle is equipped with an AD IS air dryer system or a dryer reservoir module be sure to drain the purge reservoir 5...

Page 6: ...ile manually holding and compressing valve seat 11 in place 15 Slowly release valve seat 11 allowing it to rise out of piston 2 Removevalveseat 11 thenremoveanddiscard o ring 12 16 Remove and discard...

Page 7: ...7 16 24 25 26 27 14 15 13 12 11 10 19 18 20 22 21 23 17 15 14 5 4 2 4 3 8 9 1 7 6 10 11 12 13 MOUNTING PLATE PEDALASSEMBLY PLUNGER FIGURE 9 EXPLODED VIEW...

Page 8: ...nto place so that it secures both the plunger and spring to the piston Make certain the retainer flanges are securely around piston lip and plunger groove 12 Install o rings 19 and 20 on secondary pis...

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