Replacing the alternator belt on a Mercedes MP4 on Autobahn 73 Erlangen - Nuremberg.
After a stop, the driver started the engine and heard a whistling sound. That noise was more of a grinding than a knocking. Typically, this sound is made by the alternator belt or the water pump of the cooling system. These same symptoms also manifested themselves on a warm engine, when it was given some gas.
The driver contacted the international road service Awhelp24 for help with diagnostics and, if necessary, with the replacement of the belt and / or bearings of the alternator drive.
A team of mechanics arrived at the parking lot on the autobahn and found that not only the alternator belt needed to be replaced, but also the blocked bearing.
We also have to add that the whistle can not only be caused the belt, but also the pump (it also emits a thin whistle at idle). Therefore, the condition of the pump was also checked, since on many vehicles a jammed water pump leads to a break in the alternator belt, which can be dangerous on the road.
We service all models of trucks in Germany:
- MAN
- DAF
- Iveco
- Scania
- Volvo
- Renault
Help is closer than you think! Just call our hotline!