THERE IS A VIBRATING NOISE FROM THE FRONT BELT AREA IN GEAR AT PARK. THE NOISE DISSAPEARS ONCE THE SPEED / RPM PICKS UP.
DOES THE TENSIONER NEED REPLACING / REPAIRING OR ARE THERE SOME ADJUSTMENTS THAT CAN BE PERFORMED?

THANKS GUYS.

JULIAN.

I have a 1991 300D 2.5 TD with the same symptoms.It turned out my belt tentioner shock was worn out. It is a very inexpensive part and not too hard to put it on.
ARI

It is the shock 9 out of 10 times. It is called the damper. We sell them in Partsshop. You should be able to do this yourself.

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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope :)
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM