Mike, just had this problem with my 300E. My slave cylinder had a slight leak, just barely put a sheen on the bottom of the bellhousing/transmission. Clutch action was normal. Removal and replacement was a bear, needed to approach the bolts with long extensions from behind the transmission. The hydraulic line needed a crowfoot wrench from below. Bleeding was easy, but somewhat messy using the reverse method MB specifies. I tried to suck the fluid out in the normal direction using vacuum, but no sucess, didn't remove all the air. Enjoy :-)

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Hanno
'79 6.9 Sold (after 27 years)
'83 280SL, 5 spd.
'94 E320 Sdn. 5 spd conversion
'02 E320 Sdn.(on loan to mom!)
'87 300E (5 spd. conversion) Sold
'05 E500 Wagon