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December 27, 2023 Service bulletin

Safety Recall 23KWJ: T280/T380/T480 Delayed Trailer Brake Release T280/T380/T480 Delayed Trailer Brake Release

Kenworth technical service bulletin 23KWJ for 2020-2024 Kenworth T380, 2021-2024 Kenworth T280 and 2020-2024 Kenworth T480.

Bulletin number
23KWJ
Component
Service brakes, air
Summary
Safety Recall 23KWJ: T280/T380/T480 Delayed Trailer Brake Release T280/T380/T480 Delayed Trailer Brake Release. Safety Recall Certain T280/T380/T480 chassis built with 2.1m Medium Duty End of Frame Trailer Connections and Tractor Protection Valves may not meet the standard trailer brake release timing requirements by 0.5 seconds. A delay in the trailer brake release may create momentary instability to the trailer and increase the risk of a crash.

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