Gents, anyone know the lock nut size on the lower steering column? (1999 z3 2.8)
Greyed out on realoem.com:
https://www.realoem.com/bmw/enUS/sho...diagId=32_0915
Getting a last round parts order together for the front end refresh
The diagram is incorrect - there's not actually a nut that secures the end of that bolt on the lower steering column. There's just the bolt, and the pinch joint it goes into is threaded for it.
I recently did a front-end service that involved disconnecting the column, and I just cleaned up the bolt and torqued it back into place.
Tip on putting it back together right; I always put a center-punch mark at the split in the u-joint before taking it apart, to make lining it up easier (you'll need to leave the column unlocked to put a socket on the bolt). If the column doesn't readily separate from the u-joint, a wedge driven in the split__with caution__will open it up for you.
You can also see the fastener for the threaded end of the bolt__it stays in place, but I always have used red Loctite when reassembling it (@ 23 Nm).
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