E-Class (W211) 2003-2009

Torque specs tensioner and idler pulley

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Old 03-11-2022, 06:42 PM
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e350 4matic wagon 2009
Torque specs tensioner and idler pulley

2009 e350 wagon

Replacing serpentine belt, tensioner, and 2 idler pulleys tomorrow. I've read differing torque specs. I have:
TENSIONER: 35 Nm for both bolts
SMOOTH PULLEY: 25 Nm
GROOVED PULLEY: 20, 25, or 35 Nm.
Can anyone confirm which of the above is correct?
Old 03-12-2022, 09:55 AM
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Old 03-12-2022, 02:10 PM
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e350 4matic wagon 2009
Thank you Konigstiger. Based on that I take it as BOTH pulleys torque to 25 Nm as this is considered "follow-up operations."
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Old 03-12-2022, 02:59 PM
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Yes

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