Hi:
I am replacing the valve stem seals on my 300SDL but am unsure when the seals are seated correctly.
I've read Dave's posts regarding 603.9 valve stem seals needing to be pressed on until they are all the way down and hard to pull off.
The process I am using is to press the seals on by hand and then place a washer on top of the valve stem seal. On top the washer I place a deep socket
and using pretty good force by hand , pressed the seal down as far as I can.
I don't know if this is fully seated , don't want to push them on to the point where they are damaged or are seated to far down the stem (if that's possible).
Any feedback would be greatly appreciated. Thanks.

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1986 300SDL 201K Daily Driver
1984 300D In Progress
1989 240GL 196K Swedish Brick
1984 300SD -- Sold 289K
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Bump

__________________
1986 300SDL 201K Daily Driver
1984 300D In Progress
1989 240GL 196K Swedish Brick
1984 300SD -- Sold 289K
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I just did seals on a 616 head. I used a socket also to get them to seat. With these, there was a definite click when the circular spring set in the recess.l

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Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)