Part Number Update
Bulletin No: PNU-195 Effective Date: September 2, 2014 Cancels: NA Page: 1 of 1
Subject: New ESS Piston / Unloader Valve Cross Reference
Bendix released two new service unloader assembly kits to replace existing part numbers as detailed below.
One is available from Bendix and the other from Caterpillar. Please make note of these additions/changes as
necessary. If you have any questions, please contact Bendix Commercial Vehicle Systems at www.bendix.com
or 1-800-AIR-BRAKE (1-800-247-2725), option 2.
©2014 Bendix Commercial Vehicle Systems LLC, a member of the Knorr-Bremse Group • 09/14 • All Rights Reserved.
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Kit
Part No. Engines Type
Replaces
Bendix
Part No.
Quantity
Needed
K109119
DDC
®
,
Navistar
®
Non-bushed
5008557 1
5018768 1
5014473 K109119 (2)
355-6328* CAT
®
Bushed
K046477 1
K049446 2
K109119
Unloader Assembly Kit
(non-bushed)
335-6328*
Unloader Assembly Kit
(bushed)
Contents of Unloader Kit
Part No. K109119
Description Qty.
Gasket 1
Balance Piston 1
Spring 1
O-ring 1
O-ring 1
O-ring 1
Unloader Piston 1
Cap Screw 2
Grease (not shown) 1
Contents of Unloader Kit
Part No. 335-6328*
Description Qty.
Gasket 1
Balance Piston 1
Spring 1
O-ring 1
Unloader Piston 1
Grease (not shown) 1
Each unloader kit services 1 unloader assembly.
One kit is needed for Bendix
®
BA-921
®
compressors
and two kits are needed for Bendix
®
BA-922
®
compressors.
* Available through Caterpillar dealers only.
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1
