The purpose of this CBR is to address reports of regeneration failure when ambient temperature is below 30F.
Mack technical service bulletin CBR 2535 202512 for 2025-2026 Mack Pioneer PR (4).
- Bulletin number
- CBR 2535 202512
- Component
- Engine
- Summary
- The purpose of this CBR is to address reports of regeneration failure when ambient temperature is below 30F.
Vehicles covered
- Mack Pioneer PR (4) 2025-2026 20252026
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