I am about to replace my pressure valve seals. My MB W126 CD manual says "tightening torque 35Nm" with no footnoe.

I have found the following post:

"Actually, the TDM spec is 30-35Nm... BUT you don't just screw it down. The footnote states:

To obtain a correct seat of delivery valve holder sealing rings, tighten delivery valve holder to 30Nm and release, tighten once again to 30Nm and release again, then finally tighten to 30Nm + 5Nm. Excessive tightening may cause a leak on elements at low and high pressure end by distortion of the injection pump housing."

There makes for conflicting info on this topic and I really want to get it right.

Can anyone actually confirm the "TDM 30-35 Nm" spec quoted above?

Thank you.

Yep. It's in the 1988 Technical Data Manual (TDM). Handly little book to have, worth the $40 from MB...

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Dave
Boise, ID
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Thanks gsxr!