Do a search on it for exact directions. You need to pull the instrucment panel, use a drill bit to push out the old shaft and hold the numbers in place, rough up the old shaft where the pot metal gear is pressed on and push it back together. Voila!

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13