Campaign 25E-048

Brake chamber may have been improperly manufactured, which can result in an air leak

All Bendix Commercial Vehicle Systems campaigns

Defect summary

Bendix Commercial Vehicle Systems, LLC (Bendix) is recalling certain Knorr-Bresme 22/24-57 brake chambers, with part number K068622 and K038830N00, sold as replacement parts for certain buses. The brake chamber may have been improperly manufactured, which can result in an air leak.

Consequence

A brake chamber air leak may cause the parking brake to partially apply or slow to release, which can overheat the brakes and increase the risk of a fire.

Remedy

Bendix will replace the brake chambers, free of charge. Owner notification letters were mailed September 23, 2025. Owners may contact Bendix customer service at 1-800-247-2725.

Source: NHTSA ODI recalls file, campaign 25E048000. Text as published by NHTSA.

Vehicles covered

2 product lines are covered

Vehicles covered by campaign 25E-048
Make	Model	Model years
Bendix	AIR Disc Brake Actuator	Year not stated
Bendix	AIR Disc Brake Actuator 2	Year not stated

Source: NHTSA ODI recalls and complaints files. Equipment, tire and child-seat campaigns list products, not vehicles.

Investigation

No NHTSA investigation is linked to this recall

Most recalls are started by the manufacturer. This one lists "Manufacturer" as its origin.

Before the recall

No service bulletins on this component preceded the recall

Distinct manufacturer communications on the same component group, make, model and model year in the 24 months before the report date.

Source: NHTSA manufacturer communications file.

Service bulletins

24E-034 Apr 30, 2024
Rubber ball seal in the PVM may fracture and cause a leak, which can result in park brake failure or unexpected park brake engagement while driving
23E-015 Feb 14, 2023
PVM may become stuck and fail to move into the park position when the park switch is activated
23E-011 Feb 10, 2023
When the brake pedal is fully applied and then released rapidly, the pedal plunger that connects the brake pedal to the brake valve may become…
21E-070 Aug 3, 2021
DECU may fail to activate the parking brake, causing the vehicle to unintentionally move
19E-030 Apr 18, 2019
Driver side rear brakes may drag
16E-045 May 17, 2016
These brake valves were improperly machined without a radius on the internal check valve seat, causing a delay of application of the spring brakes…