Post on 18-Dec-2015
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
BendixBendix®® ADB22X™ Air Disc Brake ADB22X™ Air Disc Brake
Look for any Loose fasteners.Identify signs such as movement, rust streaks, etc..
BendixBendix®® ADB22X™ Air Disc Brake ADB22X™ Air Disc Brake
• 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”
BendixBendix®® ADB22X™ Air Disc Brake 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………”
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
ADB22X™ADB22X™ Air Disc BrakeAdjustment
• 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
ADB22X™ADB22X™ Air Disc BrakeAdjustment
• 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
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
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
ADB22X™ADB22X™ Air Disc BrakeCaliper Sealing Integrity
Visual InspectionBoot & Seal Inspection
ADB22X™ADB22X™ Air Disc BrakeCaliper Sealing Integrity
Visual InspectionBoot & Seal Inspection• Adjuster Cover
ADB22X™ADB22X™ Air Disc BrakeCaliper Sealing Integrity
Visual InspectionBoot & Seal Inspection• Adjuster Cover• Guide Pin Caps (2)
ADB22X™ADB22X™ Air Disc BrakeCaliper Sealing Integrity
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
ADB22X™ADB22X™ Air Disc BrakeRotor Visual Inspection
Visual InspectionRotor Braking Surface• Minor heat check
will not de-grade
braking performance
ADB22X™ADB22X™ Air Disc BrakeRotor Visual Inspection
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