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BENDIX R-12DC DBL CHECK RELAY VALVE, Manual

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BENDIX R-12DC DBL CHECK RELAY VALVE Manual Download Page 6

6

ABS/TRACTION

WARNING

INDICATORS

DIAGNOSTIC

CONNECTION

ENGINE ECU

BRAKE

CHAMBER

AIR DRYER

SUPPLY

RESERVOIR

ANTI-COMPOUNDING

SPRING BRAKE

RELAY VALVE

FRONT AXLE

SERVICE

RESERVOIR

REAR AXLE

 SERVICE

RESERVOIR

R-12DC

™

RELAY

VALVE

COMPRESSOR

FIGURE 8 - 

TYPICAL

 PIPING SCHEMA

TIC

DC-4

™

DOUBLE

CHECK

VALVE

ANTI-COMPOUND

LINE

GAUGE

SR-1

™

 SPRING

BRAKE VALVE

SERVICE

BRAKE

VALVE

SPRING

BRAKES

PARKING

VALVE

ABS

ECU

MODULATOR

LOW PRESSURE

WARNING

INDICATOR

SINGLE

CHECK

VALVE

MODULATOR

WHEEL SPEED

SENSOR

TONE RING

QUICK

RELEASE

VALVE

TONE RING

WHEEL SPEED

SENSOR

MODULATOR

MODULATOR

WHEEL SPEED

SENSOR

TONE RING

SPRING

BRAKES

Summary of Contents for R-12DC DBL CHECK RELAY VALVE

Page 1: ...LVE MODEL WITH 4 VERTICAL DELIVERY PORTS EXTERIOR R 12DC VALVE MODEL WITH 2 HORIZONTAL AND 2 VERTICAL DELIVERY PORTS PRIMARY SERVICE PORT FIGURE 2 R 12DC RELAY VALVE WITH BIASED DOUBLE CHECK SECTIONAL...

Page 2: ...e will move shutting off the primary service line and instead allow the secondary service line to apply the air pressure needed to operate the valve Note Secondary service line may leak out of the pri...

Page 3: ...ded if intrusive maintenance is performed during the warranty period No two vehicles operate under identical conditions as a result maintenance intervals may vary Experience is a valuable guide in det...

Page 4: ...NTAL DELIVERY PORTS DIFFERENTIAL SPRINGS FIGURE 7 R 12DC EXPLODED VIEW 1 Remove the four cap screws securing the mounting bracket and cover to the body Retain the cap screws for reuse 2 Discard the mo...

Page 5: ...cover assembly 16 2 Install o ring 8 on piston 9 3 Install sealing ring 7 on cover 1 4 Install retainer 12 on inlet exhaust valve 11 and insert both in the body 10 5 Install spring 13 in the body 10 6...

Page 6: ...R R 12DC RELAY VALVE COMPRESSOR FIGURE 8 TYPICAL PIPING SCHEMATIC DC 4 DOUBLE CHECK VALVE ANTI COMPOUND LINE GAUGE SR 1 SPRING BRAKE VALVE SERVICE BRAKE VALVE SPRING BRAKES PARKING VALVE ABS ECU MODUL...

Page 7: ...he 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 Following the vehicle manufacturer s recommended procedures deac...

Page 8: ...8 BW1933 2007 Bendix Commercial Vehicle Systems LLC All rights reserved 3 2007 Printed in U S A...

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