So that raises a question:

If the bottom tube alone is present, should its o-ring seat into the grommet, or does it seat into a groove in the engine block? It seems like from the video I have seen, the tube seats into the block and the grommet just slides down to keep dirt out of the tube seating area. Is this correct?

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Mike Frederick
1986 300SDL, 240K+ miles
1985 300D KaliKar, 270K+ miles