1. Clockwise, and ONLY clockwise.

2. There is a nut inside the pulley at the harmonic balancer. On earlier cars, there MIGHT be a plastic cap over it. At least on my cars, the nut (which, again, may be underneath a cap on your car) is 27MM.

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86 560SL
With homebrew first gear start!
85 380SL
Daily Driver Project

http://juliepalooza.8m.com/sl/mercedes.htm