ML350 - M276 - Cam Chain Tensioner + Check valve install instructions
I’ve been searching all day for a proper step-by-step guide or PDF that covers replacing the hydraulic cam chain tensioners and installing the updated check valve (the common rattle fix on the later-style tensioners).
So far the only thing I’ve found is the ~7-minute official Mercedes tech video on YouTube, which is helpful for the general idea but way too brief and lacks the torque specs, special tools list, tricks, and detailed steps I’d like before tearing into the job this weekend.
If anyone here has access to:
- WIS/ASRA (EPC)
- StarTekInfo
- Or a good factory-level PDF/write-up
Car is a 2012 ML350 with the M276 engine (happy to give exact model/engine code if it matters or VIN)
Thanks in advance—really don’t want to miss anything.
Much appreciated!



