On the output shaft of older ('70's era) transmission (apparently both manual and automatic) there is a round threaded fastener that has four slots spaced around the periphery. There exists, or some have made, a deep socket with corresponding tabs that fit into the openings and allow you to loosen or tighten the fastener. The fastener is around 21 or 22mm in diameter. I am looking for that tool!

You can see a picture of the fastener here:

Something is seriously wrong with 240D: clutch or manual transmission?

Please PM or reply to thread. Happy to provide a deposit and pay for shipping. Thanks,

Kurt

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- '79 240D - engine swap complete! Engine broken in! 28-31 mpg! Lovin' the ride!
- '86 190D (W201-126) - 2.5 NA engine, 5 speed, cloth interior, manual climate controls, 33-34 mpg (sold to forum member).