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September 19, 2025 Service bulletin

The purpose of this CBR is to outline the steps for adjusting brake pedal freeplay following Foot Brake...

Mack technical service bulletin CBR 2503 092025 for 2025-2026 Mack Pioneer PR (4) and 2026 Mack Anthem An (4).

Bulletin number
CBR 2503 092025
Component
Service brakes
Summary
The purpose of this CBR is to outline the steps for adjusting brake pedal freeplay following Foot Brake Modulator (FBM) replacement or when diagnostic code C10C3-77is present.

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