Can anyone tell me the mm size hex key that removes the check bolt for the rear end? I remember it's in the 30s, but couldn't remember if that's 33, 35, or 37.

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1983 300D, the "Avocado"
1976 240D, 4-spd the "Pumpkin", SOLD to Pierre
1984 190D, 2.2L, 5-spd, my intro to MBZ diesels, crashed into in 2002