Bendix Bw2738 Users Manual

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We’ve Made Some Changes For The Better.
9 Bendix Updates Design Of Its AD-IS® / AD-IP® Air
Dryer Purge Valve Assembly, Adds Replacement Kits

The times are changing and so are we. Over the years, evolving commercial vehicle engine emissions standards have
resulted in higher heat and new air system contaminants. So, as part of our ongoing continuous improvement process,
Bendix – the leader in air treatment system design – has redesigned our AD-IS® / AD-IP® air dryer purge valve assembly
for even greater service life and reliability for your customers.
Here’s an overview of the improvements along with an easy-to-use guide to help you and your customers transition to
the new part numbers.

Our Updated Purge Valve Assembly Offers:
FEATURES
• New dual U-cup seal

• Wear band addition
• A longer return spring with more
active coils

New ent
acem
Repl it
K

BENEFITS

ADVANTAGES

• Improved durability and
• Durability lab test results show 2-3
performance from two seals versus
times longer life than the previous
one
design
• The U-cup seals are protected from • Extends service life
additional premature wear
significantly
• Enables consistent piston return
• Prevents the valve piston from sticking or binding

New
gn
Desi

Dual U-Cup Purge Valve Assembly Kit
New Part Numbers: K022105; K031559; K031560;
K031561; K031562; K031563
Current Status: Supersedes all existing quad ring kits
listed below as of 09/15/2008
Flip this document over to learn more about proper
assembly kit selection and current availability.

ETE

OL
OBS

TE

OLE

OBS

Quad Ring Purge Valve Maintenance Kit
Impacted Part Numbers: 5003547, 5017683
Current Status:
Obsolete as of 09/15/2008
Why The Change?
The new & improved piston design will not fit or operate in the
old style housing of the Bendix purge valve.
Replace With:
Replace with a complete valve assembly
Flip to the reverse of this document to learn more about
the proper assembly kit selection and current availability.

Quad Ring Purge Valve Assembly Kit
Impacted Part Numbers: 800404; 5009650; 5017682; 5017687
Current Status:
Obsolete as of 09/15/2008
Why The Change?
The quad ring was replaced by the dual U-cup seals and wear
ring.
Replace With:
Replace with a complete valve assembly
Read the reverse side of this document to learn more about
the proper assembly kit selection and current availability.

Original Kit
Piece Number

Configuration /
Installation

Replacement Kit
Piece Number

800404

AD-IS® / AD-IP® Air Dryer

K022105

AD-IS® / AD-IP® EverFlow™ Air Dryer
AD-IP® Drop-In Air Dryer

K031560*

AD-IS® / AD-IP® Air Dryer

K031559

AD-IS® / AD-IP® EverFlow™ Air Dryer
AD-IP® Drop-In Air Dryer

K031561*

AD-IP® Air Dryer Discharge Line Unloader

K031562

AD-IP® Air Dryer Discharge Line Unloader

K031563

Purge Valve Assembly Kit for climate
conditions above -40°C (-40°F)

5017687
Arctic Purge Valve Assembly Kit for climate conditions
between -40°C to -50°C (-40°F to -58°F)

5009650
Purge Valve Assembly Kit for climate conditions
above -40°C (-40°F)

5017682
Arctic Purge Valve Assembly Kit for climate
conditions between -40°C to -50°C (-40°F to -58°F)

5003547
Purge Valve Maintenance Kit for climate
conditions above -40°C (-40°F)

5017683
Arctic Purge Valve Maintenance Kit for climate
conditions between -40°C to -50°C (-40°F to -58°F)

Purge valve maintenance kits will no longer be offered. Select the
appropriate purge valve assembly kit from those shown above that
best matches your application.

* Available Q1 2009

For more information about the new updates to our redesigned purge
valve assembly kits, or about any of our complete line of Genuine Bendix
air dryers, valves, compressors, electronics, wheel end components and
more, talk to your Bendix account manager, call 1-800-AIR-BRAKE
(1-800-247-2725), or visit www.bendix.com today.

BW2738 ©2008 Bendix Commercial Vehicle Systems LLC, a member of the Knorr-Bremse Group. • 11/08 • All rights reserved.



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