Not sure where to post this (Here, Vintage, or Unimog) but this seemed the best place to start as it's tech info I am after... I have an old boat with an OM-321 5.1 Ltr engine installed (from what i can gather it is the marinised version of the engine that was used on some Unimog's and early Coaches. I have been able to find the settings for Tappets etc and have a parts book but can not find any service info, in particular how to check / set the injector timing or the location of timing marks on the block... Can anyone out there help? Kind Regards, Andy Kayll

You should post the question on a UK MB forum. The posters on their forums are far more likely to have had experience with the engine than people here.

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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