Loose CCV mounting bolts and oil leak at CCV due to cracking of the housing
Mack technical service bulletin TSB M257005 202608 for 2025-2027 Mack Pioneer PR (4).
- Bulletin number
- TSB M257005 202608
- Component
- Engine
- Summary
- Loose CCV mounting bolts and oil leak at CCV due to cracking of the housing. Mounting hardware found to be under-torqued after the vehicle was delivered.
Vehicles covered
- Mack Pioneer PR (4) 2025-2027 202520262027
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