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GENERAL SAFETY GUIDELINES

WARNING! PLEASE READ AND FOLLOW THESE INSTRUCTIONS

TO AVOID PERSONAL INJURY OR DEATH:

When working on or around a vehicle, the following guidelines should be observed AT ALL TIMES:

 

 Park the vehicle on a level surface, apply the 

parking brakes and always block the wheels.  

Always wear personal protection equipment.  

 

Stop the engine and remove the ignition key 

when working under or around the vehicle.  

When working in the engine compartment, 

the engine should be shut off and the ignition 

key should be removed. Where circumstances 

require that the engine be in operation, EXTREME 

CAUTION should be used to prevent personal 

injury resulting from contact with moving, 

rotating, leaking, heated or electrically-charged 

components.

 

Do not attempt to install, remove, disassemble 

or assemble a component until you have read, 

and thoroughly understand, the recommended 

procedures.  Use only the proper tools and 

observe all precautions pertaining to use of those 

tools.

 

If the work is being performed on the vehicle’s 

air brake system, or any auxiliary pressurized air 

systems, make certain to drain the air pressure 

from all reservoirs before beginning ANY work 

on the vehicle.  If the vehicle is equipped with a 

Bendix

®

 AD-IS

®

 air dryer system, a Bendix

®

 DRM

 

dryer reservoir module, or a Bendix

® 

AD-9si

®

 air 

dryer, be sure to drain the purge reservoir.

 

 Following the vehicle manufacturer ’s 

recommended procedures, deactivate the 

electrical system in a manner that safely removes 

all electrical power from the vehicle.

 

Never exceed manufacturer’s recommended 

pressures.  

 

Never connect or disconnect a hose or line 

containing pressure; it may whip and/or cause 

hazardous airborne dust and dirt particles. Wear 

eye protection. Slowly open connections with 

care, and verify that no pressure is present. Never 

remove a component or plug unless you are 

certain all system pressure has been depleted.

 

 Use only genuine Bendix

®

 brand replacement 

parts, components and kits. Replacement 

hardware, tubing, hose, fi ttings, wiring, etc. must 

be of equivalent size, type and strength as original 

equipment and be designed specifi cally for such 

applications and systems.

 

Components with stripped threads or damaged 

parts should be replaced rather than repaired.  

Do not attempt repairs requiring machining or 

welding unless specifi cally stated and approved 

by the vehicle and component manufacturer.

 

Prior to returning the vehicle to service, make 

certain all components and systems are restored 

to their proper operating condition.

 

 For vehicles with Automatic Traction Control 

(ATC), the ATC function must be disabled (ATC 

indicator lamp should be ON) prior to performing 

any vehicle maintenance where one or more 

wheels on a drive axle are lifted off the ground 

and moving.

 

The power MUST be temporarily disconnected 

from the radar sensor whenever any tests USING 

A DYNAMOMETER are conducted on a vehicle 

equipped with a Bendix

® 

Wingman

®

 system.

 

 You should consult the vehicle manufacturer's operating and service manuals, and any related literature, 

in conjunction with the Guidelines above.

Summary of Contents for R-12V

Page 1: ...ment Relay Valves Kit R 12 Relay Valves R 14 Relay Valves R 12V R 12H R 14V R 14H Kit Contents Item No Description Qty 1 O Ring 1 2 Shim Washer 3 3 Shim Washer 3 4 Shim Washer 3 5 Spring 1 6 Piston Bearing 1 7 O Ring 1 8 O Ring 1 9 O Ring 1 10 Washer 3 Nine shims of three different thicknesses are included in this kit ...

Page 2: ...the electrical system in a manner that safely removes all electrical power from the vehicle Never exceed manufacturer s recommended pressures Never connect or disconnect a hose or line containing pressure it may whip and or cause hazardous airborne dust and dirt particles Wear eye protection Slowly open connections with care and verify that no pressure is present Never remove a component or plug u...

Page 3: ...stem is reverted to a straight service brake system The R 12 and R 14 relay valves are similar in appearance The difference between them is the R 14 incorporates a balance port which provides the added feature of built in anti compounding when the R 14 is used to control the emergency section of the spring brakes Refer to the chart below to select the appropriate R 12 or R 14 relay valve Fig 4 Fig...

Page 4: ...12346 1 1 4 1 3 4 2 3 8 7 Two Delivery Ports Kelsey Hayes 5468 1 1 4 1 1 2 2 3 8 8 Truck Tractor Relay Valve with Bracket Kelsey Hayes 5470 2 3 8 1 1 2 1 3 4 4 3 8 and 1 2 8 Trailer Relay Valve no Bracket Midland KN 28000 1 1 4 2 3 8 2 3 8 Diaphragm Type Mounting Bracket Midland KN 28010 1 1 4 1 3 8 2 1 4 1 3 8 9 Triangular Bracket Midland KN 28010A 1 1 4 1 3 8 3 3 8 9 Triangular Bracket Midland K...

Page 5: ...el nipple Use a Teflon pipe thread sealant on both ends of the nipple to prevent thread damage when removal is necessary 6 Identify and mark all lines to valve as follows A Service port from brake valve or control valve B Supply port from reservoir C Delivery ports from chambers 7 Remove air lines then valve INSTALLATION 8 Install the R 12 or R 14 valve If bracket mounted secure to frame If reserv...

Page 6: ...02 2019 Bendix Commercial Vehicle Systems LLC a member of the Knorr Bremse Group 12 19 All Rights Reserved Log on and Learn from the Best On line training that s available when you are 24 7 365 Visit brake school com ...

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