On March 13, Mr [redacted] brought his MLto replace a keyWhile it was here we replaced the Harmonic Balancer pulley per a recall campaignThe vehicle was driven out of the dealership on March 16, without any mechanical issuesOn March 23, Mr [redacted] contacted us stating that he had performed repairs himself on his vehicle which included removal of the harmonic balancer pulleyHe stated that he noticed the pulley to be damaged by us when we replaced itThe vehicle was towed into the dealership on March 23, Upon arrival I inspected the damageI found that the harmonic balancer pulley had been installed incorrectly and the crankshaft and the harmonic balancer pulley was permanently damagedThis is mechanically impossible for the pulley to be damaged to the degree that it was and be driven from the dealership for multiple daysIf the pulley was broken when we had done the repairs it would cause extreme drivetrain vibrationIt would also cause the crankshaft to spin inside the pulley because the pin was completely destroyed and the bolt holding the pulley to the crankshaft would not be able to torque to the proper specificationAs a result of the crankshaft spinning in the pulley this would cause overheating because the water pump would not be spinning, also there would be no power steering and battery light would come on in the instrument cluster because the alternator is not being turned by the beltDue to all of these reasons, Mr***'s accusations are mechanically impossibleThe only way the harmonic balancer pulley could be damaged would be if Mr [redacted] installed it incorrectly himself On March 30, Mr [redacted] towed the vehicle from the dealership [redacted] ***Mercedes Benz Master TechnicianShop Foreman at Mercedes Benz of Scottsdale
On March 13, Mr [redacted] brought his MLto replace a keyWhile it was here we replaced the Harmonic Balancer pulley per a recall campaignThe vehicle was driven out of the dealership on March 16, without any mechanical issuesOn March 23, Mr [redacted] contacted us stating that he had performed repairs himself on his vehicle which included removal of the harmonic balancer pulleyHe stated that he noticed the pulley to be damaged by us when we replaced itThe vehicle was towed into the dealership on March 23, Upon arrival I inspected the damageI found that the harmonic balancer pulley had been installed incorrectly and the crankshaft and the harmonic balancer pulley was permanently damagedThis is mechanically impossible for the pulley to be damaged to the degree that it was and be driven from the dealership for multiple daysIf the pulley was broken when we had done the repairs it would cause extreme drivetrain vibrationIt would also cause the crankshaft to spin inside the pulley because the pin was completely destroyed and the bolt holding the pulley to the crankshaft would not be able to torque to the proper specificationAs a result of the crankshaft spinning in the pulley this would cause overheating because the water pump would not be spinning, also there would be no power steering and battery light would come on in the instrument cluster because the alternator is not being turned by the beltDue to all of these reasons, Mr***'s accusations are mechanically impossibleThe only way the harmonic balancer pulley could be damaged would be if Mr [redacted] installed it incorrectly himself On March 30, Mr [redacted] towed the vehicle from the dealership [redacted] ***Mercedes Benz Master TechnicianShop Foreman at Mercedes Benz of Scottsdale