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Originally Posted by willrev
What are flex discs? They are discussed in many of the posts but no technical information is given.
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http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=mercedesshop&baseurl=http://catalog2.mercedesshop.com/&cookieid=1DX103LSO1E40YMY5L&year=1982&make=MB&model=300-SD-002&category=K&part=Flex+Disc
One flex disc on either side of the drive shaft connects it to transmission in front and differential at rear. They are made of rubber and cushion the torque for a smoother acceleration/shift.
Exactly when in the shifting process does the clunking occur?
Shifting out of park to reverse also?
On hard shifts only?...