We’ve recently experienced charge air receiver to engine fastener failure accompanied by bracket weld failure. We’ve repaired 2 out of 10 engines and currently have another 2 engines off line to make the same repair.
The engine heads must be removed to access the failed fasteners.
Wartsila is telling us that the issue is improper fastener torque during manufacture but we’re not sure that explains the problem completely.
Of the four engines – 3 have around 8000 hours and the 4th has 16,000 hours.
Would appreciate thoughts and comments from the group.