After turbocharger failure, which CAC action is recommended?

After turbocharger failure, which CAC action is recommended?

• A. Replace the CAC
• B. Remove the CAC and back-flush with solvent
• C. Do not touch the CAC
• D. Inspect CAC only

Answer: (B)

When a turbo fails, oil and debris can contaminate the charge air cooler, so thorough cleaning is essential. Removing the CAC gives full access to all passages and the core, allowing proper cleaning rather than just surface work. Back-flushing with solvent dissolves and flushes out oil and carbon buildup that simple inspection or surface cleaning would miss, reducing the risk of contaminated air reaching the engine after the turbo is replaced. Replacing the CAC is more drastic and isn’t always necessary if cleaning suffices, though severe deposits or damage may still require replacement. After back-flushing, confirm the passages are clean and dry before reinstalling.

When a turbo fails, oil and debris can contaminate the charge air cooler, so thorough cleaning is essential. Removing the CAC gives full access to all passages and the core, allowing proper cleaning rather than just surface work. Back-flushing with solvent dissolves and flushes out oil and carbon buildup that simple inspection or surface cleaning would miss, reducing the risk of contaminated air reaching the engine after the turbo is replaced. Replacing the CAC is more drastic and isn’t always necessary if cleaning suffices, though severe deposits or damage may still require replacement. After back-flushing, confirm the passages are clean and dry before reinstalling.