BENDIX TCH-013-017 Fascicule

©2008 Bendix Commercial Vehicle Systems LLC   7/08.   All Rights Reserved.   Printed in U.S.A.

avoid personal injury or death:
When working on or around a vehicle, the following general 
precautions should be observed at all times.
1.  Park the vehicle on a level surface, apply the parking 

brakes, and always block the wheels.  Always wear safety 
glasses.  

2.  Stop the engine and remove 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.

3.  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.

4.  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 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, deactivate the electrical system in a manner 
that safely removes all electrical power from the vehicle.

6.  Never exceed manufacturer’s recommended pressures.  
7.  Never connect or disconnect a hose or line containing 

pressure; it may whip.  Never remove a component or 
plug unless you are certain all system pressure has been 
depleted.

8.  Use only genuine Bendix

®

 replacement parts, components 

and kits.  Replacement hardware, tubing, hose, fi ttings, 
etc.  must be of equivalent size, type and strength as 
original equipment and be designed specifi cally for such 
applications and systems.

9.  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.

10. Prior to returning the vehicle to service, make certain all 

components and systems are restored to their proper 
operating condition.

11. For vehicles with Antilock 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.

ATR-1

™

 Antilock Traction Relay Valve  .  .  .  .  .  .  .  .  .  .  .  .    SD-13-4811 (BW1794)

ATR-2

™

 Antilock Traction Relay Valve  .  .  .  .  .  .  .  .  .  .  .  .    SD-13-4812 (BW1791)

R-14

®

 Relay Valve  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .    SD-03-1064 (BW1431)

ACom

™

 Diagnostics PC Software  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  BW2329

(Free downloads available on www.bendix.com)

ABS Repair and Diagnostics DVD .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  BW2538

Visit the Literature Center on www.bendix.com for free downloads of Service Data 
Sheets or to order copies.

For more information, contact your local Bendix representative 
or the Bendix Technical Assistance Team at 1-800-AIR-BRAKE 
(1-800-247-2725) Monday through Friday, 8:00 A.M. to 6:00 P.M. EST, 
and follow the instructions in the recorded message. Or, you may e-mail 
the Bendix technical assistance team at: techteam@bendix.com.