PeachParts Mercedes-Benz Forum - View Single Post - The Wiki DIY 617 turbo return tube method is wrong....

pawoSD · #5 12-20-2009, 01:12 AM

Quote:

Originally Posted by ck42

Okay...think I've got it.
Only clarification I need now is in regards to how the "Contoured Sealing Ring" / turbo grommet is seated on the tube before you begin attempting to put the tube in place.

Right now, I've got the tube, and both o-rings are in their groove. I've already slid the grommet onto the tube such that it's sitting 'over' one of the o-rings. It appears that on the inside of the grommet, there's a groove where the o-ring should be seated once it's fitted correctly. That's where I have it now. Is this correct?

From this point, I should just be able (with the help of of a little oil) to slip the tube (grommet end first) into the "oil pan upper half" drain hole, right?

I thought that at first too, the part of the tube with the o-ring on it actually goes completely past the "contoured sealing ring". The o-ring seals against the inside of the opening on the engine. The contoured sealing ring is pretty much just a secondary seal.

So just push the tube farther through the contoured sealing ring until the whole part with the o-ring is through, and that is where it should be. Then place it on the engine and gently push the contoured sealing ring into the opening like in the diagram, then install the upper section, and you're done!