1. Bendix® ADB 22X™ Air Disc Brakes “Service Series”
Vehicle Pre-Trip Training & Inspection
“Service Series”

2. ADB22X Inspection Process included in BW7356 & in the Service Data Sheet BW7308

3. Bendix® ADB22X™ Air Disc Brake Pre Trip Inspection Brake Check
All CDL Requirements for Air Braked Vehicles Remain Consistent with the Introduction of
Air Disc Brakes
Parking Brake Check
Test Air Leakage Rate (Static check)
Test Air Brake System for Leaks
Test Low Pressure Warning Alarm and/or Signal
Check That the Spring Brakes Come on Automatically.
Check Rate of Air Pressure Buildup
Inspect Service Brakes

4. Bendix® ADB22X™ Air Disc Brake
Basic Concepts
&
Functional Understanding
Caliper
Lever
Tappets
Pad Retainer
Rotor
Brake Chamber
Roller Bearings
Bridge
Pads
Return Spring

5. Bendix® ADB22X™ Air Disc Brake Component Identification
&
Fastener Inspection
Look for any Loose fasteners.
Identify signs such as movement, rust streaks, etc..

6. Bendix® ADB22X™ Air Disc Brake
Section 5.3.2* – During Step 5 Walk-around
*Ohio Commercial Drivers License Manual
Accessibility may vary by vehicle configuration
Park on level ground and chock the wheels to prevent the vehicle from moving.
Release the Parking Brake
Check Brake Adjustment

7. ADB22X™ Air Disc Brake Adjustment Inspection
Caliper free movement
0.024” ”

8. Bendix® ADB22X™ Air Disc Brake
*Ohio Commercial Drivers License Manual
* “……….brakes equipped with automatic adjusters are found to be out of adjustment, the driver must take the vehicle to a repair facility as soon as possible to have the problem corrected. The manual adjustment of an automatic adjuster should only be done to allow safe transportation of vehicle to the repair facility………”

9. ADB22X™ Air Disc Brake Adjustment
Remove the adjuster
cover
Identify that a
“shear adapter” is
installed
Shear Adapter is designed to protect the caliper from over-torque
If over-torque occurs, the shear adapter will fail (shear)
Once replaced, the caliper can then be properly adjusted
If two shear adapters fail consecutively, refer to the SD Sheet, BW7308 for trouble shooting procedure
Adjuster cover
Shear Adapter

10. ADB22X™ Air Disc Brake Adjustment
Using a 10mm boxed end wrench or 6pt socket
Rotate the shear adapter clockwise until brakes are tight
Rotate shear adapter counter clockwise TWO (2) clicks
Shear Adapter

11. ADB22X™ Air Disc Brake Adjustment
Leave the
“shear adapter”
installed
Reinstall the adjuster
cover
Verify that the adjuster cover is properly installed

12. ADB22X™ Air Disc Brake Pad Wear Inspection
Visual Inspection
Disc Pad
Wear Indicators
Cast indicators located on caliper and carrier
Alignment Indicates Pad Replacement is Required

13. ADB22X™ Air Disc Brake Pad Wear Inspection
Visual Inspection
Disc Pad
Wear Indicators
Cast indicators located on caliper and carrier
Alignment Indicates Pad Replacement is Required

14. ADB22X™ Air Disc Brake Pad Wear Inspection
Visual Inspection
Disc Pad
Wear Indicators
Cast indicators located on caliper and carrier
Alignment Indicates Pad Replacement is Required

15. ADB22X™ Air Disc Brake Caliper Sealing Integrity
Visual Inspection
Boot & Seal Inspection

16. ADB22X™ Air Disc Brake Caliper Sealing Integrity
Visual Inspection
Boot & Seal Inspection
Adjuster Cover

17. ADB22X™ Air Disc Brake Caliper Sealing Integrity
Visual Inspection
Boot & Seal Inspection
Adjuster Cover
Guide Pin Caps (2)

18. ADB22X™ Air Disc Brake Caliper Sealing Integrity
Visual Inspection
Boot & Seal Inspection
Adjuster Cover
Guide Pin Caps (2)
Guide Pin Boots (2)

19. ADB22X™ Air Disc Brake Rotor Visual Inspection
Rotor Braking Surface

20. ADB22X™ Air Disc Brake Rotor Visual Inspection
Rotor Braking Surface
Minor heat check
will not de-grade
braking performance

21. ADB22X™ Air Disc Brake Rotor Visual Inspection
Rotor Braking Surface
Minor heat check
will not de-grade
braking performance
Cracks WILL
significantly impact
and brake life
See ADB22X Service
Data Sheet for detailed explanations
If Cracks are found, the driver must take the vehicle to a repair
facility as soon as possible to have the problem corrected.

22. Bendix® ADB22X™ Air Disc Brake
For complete and detailed instructions, refer to the Bendix® ADB 22X™ Air Disc Brake Service Data sheet BW7308 and View the Service Series DVD BW7356

23. Bendix® Brand Foundation Brake Products
From
Bendix Spicer Foundation Brake LLC
Questions and Answers

24. Bendix® ADB22X™ Air Disc Brake
Thank You