BENDIX TCH-002-006 Leaflet

The following procedure is for manually caging and/or un-caging (releasing) a Bendix

®

 Air Disc Brake Spring 

Brake Actuator.

Un-Caging (releasing) the Parking Brake
1)  Install the spring brake actuator on the air disc brake (if not previously installed).  Refer to service data sheet 

SD-23-7541 (BW7308). See Figure 1b.

2)  Connect a regulated air line to parking brake port (12) of the actuator (if not connected previously).  See 

Figure 1a.

3)  Gradually supply 100 psi of air pressure to the parking brake port (12) of the actuator.
4)  Rotate the release bolt clockwise until resistance is encountered.
5)  Seat the release bolt in the un-caged position by applying a torque of 50 lb-ft.  The release bolt and push 

rod should be in the position shown in Figure 2.

6)  With hands clear of moving parts, slowly release the air pressure to the parking brake port (12).  Be sure to 

exercise caution to prevent pinching of fi ngers.  

© 2007 Bendix Commercial Vehicle Systems LLC 11/2007.   All rights reserved.   Printed in U.S.A.

Service 

Housing

Spring Brake 

Housing

Parking Brake (12)

Service Port (11)

Service Housing

Spring Brake Housing

Release Bolt

Push Rod

Figure 1a - Spring brake shown in the caged position.

Figure 1b - Air disc brake assembly

Parking Brake (12)

Service Port (11)

Release Bolt

Push Rod

Figure 2 - Spring brake shown in the un-caged (released) position.