W211 E270cdi drive belt

[Bodo]

Hi,
W211 2003 2.7CDI OM646, 102k on the clock. Belt and pulleys are genuine. Fitted in 2003 they still are working ok no bad noise or rattle, but they need to be changed.
2 pulleys tensioner and water pump.
Diesel anyone know the bolt torque, I don’t want to overdo it.
I need to know the value for
Idler pulley
Tensioner
Water pump (short and long bolts)
Many thanks

 

[rifiki]

Can't help but change the idler pulley. They can let go without warning as happened to my CLK M272 motor a few years ago causing more problems.

 

[Bodo]

Done,
Water pump m6 14nm
M8 20nm
Pulleys 35nm
Tensioner 30nm

 

[sonic]

A nice clean engine after doing the job. I had a 2003 CLK270CDI sold it with 120K on the clock, with the origional pulleys & belt. But about a week before the thermostat failed.