BENDIX BW2979 Dépliant

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Preventative Maintenance – As Easy As 1-2-3
Adhering to a preventative maintenance schedule is crucial to keeping your vehicle’s air 
system clean and ensuring superior performance of all components that utilize system 
air – such as brakes, emissions equipment and automated manual transmissions. 
Depending on vocation, Bendix recommends a 1, 2, or 3 year air dryer cartridge 
replacement on vehicles equipped with a Bendix compressor.
 
 For severe service applications, such as residential refuse trucks or school 
buses, the air dryer cartridge should be replaced every year or 100,000 miles;
 
 For pick-up and delivery operations, or for double- and triple-trailer line 
haul trucks
, every two years or 200,000 miles is the recommendation; and
  
Line-haul operations using a single trailer should swap the filter out   
   
every 3 years or 300,000 miles.
More frequent intervals may be required depending on a vehicle’s age, its compressor 
condition, use of a non-Bendix compressor, the operating environment, the vehicle’s 
vocation, and its usage. 
In conjunction with these guidelines, your fleet can determine the functionality of your 
filters by checking for moisture in the air brake system monthly. If moisture is present, 
the air dryer cartridge may require replacement. Refer to the Bendix Service Data Sheet 
of the specific air dryer for additional information. (Recommended intervals for trucks 
equipped with non-Bendix compressors are 6 months (50,000 miles); 1 year (100,000 
miles); and 2 years (200,000 miles), respectively).
 IMPORTANT! When servicing, note 
that standard Bendix
® 
AD-9si
 air dryers or air dryer cartridges may be serviced with 
PuraGuard oil coalescing air dryers or cartridges, however, PuraGuard oil coalescing air 
dryers or cartridges MUST only be serviced with like replacements.
Bendix
®  
AD-9si
 Air Dryer
To learn more, talk to your Freightliner dealer representative,  
call 1-800-AIR-BRAKE (1-800-247-2725) or visit www.Bendix.com today.
Bendix Commercial Vehicle Systems LLC • 901 Cleveland Street • Elyria, Ohio 44035 • www.bendix.com • 1-800-247-2725
BW2979 ©2014 Bendix Commercial Vehicle Systems LLC, a member of Knorr-Bremse Group • 03/14 • All Rights Reserved
Printed on recycled paper
Introducing the Bendix
®
 
AD-9si
 
Air Dryer.
Advanced Technology for Freightliner
®
 Vehicles.
The performance evolution continues with the Bendix
®
AD-9si
The Mark of Assurance.
Preventative Maintenance and Bendix
®
 PuraGuard
®
  
Oil Coalescing Technology. The Tools To Keep Your  
Air Treatment System in Optimal Working Condition.
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