BENDIX TCH-020-019 User Manual download pdf

Technical Bulletin

Bulletin No: Effective Date: Cancels: Page: 1 of

Subject:

TCH-020-019

9-15-2010

N/A

Installation of alternate return spring pin (20-881).

This Bulletin is to inform technicians that brake

kits manufactured between July 24, 2010 and

August 31, 2010, that included brake hardware package

HK29XLS-bag, all feature the return spring pin shown

in Figure 1.

These return spring pins and standard pins function in

the same way and have only a slight variation in the

installation technique.

Recommended Installation Procedure

Technicians will notice during installation that these

alternate pins install without force (“loose t”), as

opposed to the normal tight “interference t.”

After the installation of the return spring, the force of the return spring and the ramp angle of the spring pins

combine to securely retain the pins and provide the normal brake function.

When installing kits with these pins, we recommended that rst the replacement brake shoes be placed into

the spider assembly, then the return spring pins be inserted, and nally the specied return spring be installed.

Questions:

If you have any questions, please call the Bendix Tech Team at 1-800-AIR-BRAKE (1-800-247-2725), or contact

your local Bendix Account Manager or Service Engineer (see the “contacts” page at www.bendix.com for a

directory).

To further identify the kits featuring alternate return spring pins, see the reference below.

FIGURE 1 - 20-881 RETURN SPRING PIN

Angular Tab

(compared to standard rounded tab)

For your reference, the date codes on the packaging are: 1G2410H through 2H3110H (codes translate to 7-24-2010 through 8-31-2010.)

BENDIX TCH-020-019 User Manual