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Old 04-16-2009, 06:57 AM
Roncallo Roncallo is offline
88Black560SL
 
Join Date: Oct 2004
Location: CT
Posts: 3,538
722.6 Hard down shifts after overhaul

Hello

I just completed the overhaul on my 1996 SL600 722.6 transmission. One of the things I did and probably shouldn't have was cleared all adaptation values. The transmission runs fine with the exception of the 2-1 and sometimes 3-2 downshift is hard. I am aware that this particular year had a valve body update to cure the 2-1 problem which I did not do due to cost. But this down shift is sometimes so hard I find it difficult to believe that the transmission ever went into production like this in a Mercedes.

I'm thinking maybe it needs time to re-adapt. But how much time is required. Ive already driven the car about 300 miles.

Also thanks for all the previous advice I got on this forum in overhauling this transmission.
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