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

Bendix® ADB 22X™ Air Disc BrakesVehicle Pre-Trip Training & Inspection

“Service Series”

ADB22X Inspection Processincluded in BW7356

& in the Service Data Sheet BW7308

BendixBendix®® ADB22X™ Air Disc Brake ADB22X™ Air Disc Brake Pre Trip Inspection Brake Check

All CDL Requirements for Air Braked Vehicles Remain Consistent with

the Introduction ofAir 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

BendixBendix®® ADB22X™ Air Disc Brake ADB22X™ Air Disc Brake

Pads

Brake Chamber

Rotor

BridgeReturn Spring

Lever

Pad Retainer

Caliper

Roller Bearings

Tappets

Basic Concepts&

Functional Understanding

Component Identification&

Fastener Inspection


Look for any Loose fasteners.Identify signs such as movement, rust streaks, etc..


• Park on level ground and chock the wheels to prevent the vehicle from moving.

• Release the Parking Brake

• Check Brake Adjustment

Section 5.3.2* – During Step 5 Walk-around*Ohio Commercial Drivers License Manual

Accessibility may vary by vehicle configuration

ADB22X™ADB22X™ Air Disc BrakeAdjustment Inspection

Caliper free movement0.024” - 0.043”


*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………”

ADB22X™ADB22X™ Air Disc BrakeAdjustment

• 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

Shear Adapter

Adjuster cover


• 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


• Leave the

“shear adapter”

installed• Reinstall the adjuster

cover• Verify that the

adjuster cover is properly installed

ADB22X™ADB22X™ Air Disc BrakePad Wear Inspection

Visual Inspection

Disc Pad

Wear Indicators• Cast indicators

located on caliper and carrier

• Alignment Indicates Pad Replacement is Required


Visual Inspection

Disc Pad





Visual Inspection

Disc Pad




ADB22X™ADB22X™ Air Disc BrakeCaliper Sealing Integrity

Visual InspectionBoot & Seal Inspection


Visual InspectionBoot & Seal Inspection• Adjuster Cover


Visual InspectionBoot & Seal Inspection• Adjuster Cover• Guide Pin Caps (2)


Visual InspectionBoot & Seal Inspection• Adjuster Cover• Guide Pin Caps (2)• Guide Pin Boots (2)

ADB22X™ADB22X™ Air Disc BrakeRotor Visual Inspection

Visual InspectionRotor Braking Surface


Visual InspectionRotor Braking Surface• Minor heat check

will not de-grade

braking performance


Visual InspectionVisual InspectionRotor Braking Surface• Minor heat check

will not de-grade braking performance

• Cracks WILLsignificantly impactbraking performanceand brake life

• See ADB22X ServiceData 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.

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

Bendix® Brand Foundation Brake ProductsFrom

Bendix Spicer Foundation Brake LLC

Questions and Answers

Bendix® ADB22X™ Air Disc Brake

Thank You

Documents

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