300GE diff making noise

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g32094
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Joined: 23.05.2015
Location: Belgium

 

This summer, I've bought a mercedes 300GE SWB 1990 with a manual gearbox. 244000 km's on the clock.
When the diff has traction, it starts making a singing noise at 70-80 km/h.
I've remounted the front driveshaft and the noise was gone. 
I've been told it could be the pinion gear bearing? 
Does anyone had this problem already? Or does anyone know what I have to do? 

Thanks for your answer! 

Best regards from Belgium