BENDIX TCH-005-013 Prospecto

This Bulletin updates Bendix Commercial Vehicle Systems LLC guidelines for push rods used with Bendix

®

 

ASA‑5

®

 and Bendix

®

 Versajust

™

 automatic slack adjusters.  

Both these slack adjusters adjust the clearance between the brake linings and the drums during a brake application 

and require push rods with the following specifications to be used:  

1.  For push rods up to eight (8) inches in length, must be made with steel with strength 

that meets or exceeds SAE 1018 or equivalent grade (based on the yield strength 

of the material).  (See dimension A shown below).  

© 2011 Bendix Commercial Vehicle Systems LLC, a member of the Knorr‑Bremse Group.  9/11.  All Rights Reserved.

A

A

Push rod length ‘A’ is 

measured from the 

bottom of the actuator 

to the end of the push 

rod.  This dimension is 

taken with the spring 

brakes released or 

caged. 

If you have further questions, contact your Bendix Account Manager or call 1‑800‑AIR‑BRAKE. 

See the following Bendix Service Data sheets available from the document library 

at www.bendix.com or from the Literature Center at the web site:

SD‑05‑1269 Bendix

®

 ASA‑5

®

  Automatic Slack Adjuster 

SD‑05‑4630 Bendix

®

 Versajust

™

 Automatic Slack Adjuster 

SD‑02‑4525 Bendix

®

 EverSure

®

 Spring Brake 

2.  Without exception, in cases where longer push rods are necessary, they must 

be made from steel with strength that meets or exceeds

 SAE 1035 or equivalent 

grade (based on the yield strength of the material).  In these cases, the push rod 

must be a minimum of 0.625 inch in diameter and only partially threaded (i.e. Only 

threaded the first three to four inches at the end of the rod).

 

3 ‑ 4 

inches 

max.

Push 

Rod 

Diameter