What are the indications of a failed "automatic adjustment mechanism" in an air disc brake caliper?

2025-11-09 15:59:55

Failure of the automatic slack adjuster mechanism will lead to a degradation in brake response, with the following specific manifestations:

• Noticeably increased brake pedal travel or air chamber push rod stroke: This occurs because the mechanism can no longer compensate for the excessive gap resulting from brake pad wear.

• Reduced braking force, creating a "softer" brake feel: The driver needs to depress the brake pedal much deeper to achieve the expected braking power.

• Delayed brake response at individual wheels: In a fleet setting, if a specific vehicle's braking action appears significantly slower compared to others, this mechanism failure is a likely cause.

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