On a small number of trucks equipped with a Cummins L9N natural gas engine, when the engine is lifted, the studs that attach the rear lifting bracket to the cylinder head could detach. If this happens, the engine could swing or fall.
Safety Risk
An engine that swings or falls could create a risk of injury.
Corrective Actions
Cummins will notify owners by mail and advise you to take your truck to a Cummins authorized service center to inspect and, if necessary, replace the studs on the rear lifting bracket.