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+--- Thread: Steering Column Assembly (/showthread.php?tid=10038)
Steering Column Assembly - Chris KC - 03-06-2025
After all these years I've finally got around to stripping a steering column - the only bit of an A7 I've never ventured inside!
I spent a fair bit of time perusing available guidance but still have two rather fundamental questions.
1. The upper thrust washer BM41 above the worm gear - does it go bevel side down? I'd appreciate confirmation.
Shot 1.jpg (Size: 54.38 KB / Downloads: 187)
2. Can anyone enlighten me on the role of the "peg" BM20 please?
Shot 2.jpg (Size: 125.6 KB / Downloads: 187)
Thank you!
RE: Steering Column Assembly - Howard Wright - 03-06-2025
Hi Chris
This drawing on the archive seems to show the bevel towards the worm.
IMG_1418.jpeg (Size: 61.09 KB / Downloads: 123)
I imagine the peg holds the outer column to the screw portion at the bottom of bm17.
Cheers
Howard
RE: Steering Column Assembly - Chris KC - 03-06-2025
Thanks Howard - good call (I'd completely forgotten that drawing!)
The section on page 189 of The Companion - and a certain amount of common sense - seems to concur; so bevel down it is.
Regarding the peg, no, I don't think so.
The brass section at the base of the column is staked on, but not with a continuous peg (being hollow inside for the other bits to pass through).
The parts list suggests it's a component of the worm / inner shaft assembly -
Shot 3.jpg (Size: 42.82 KB / Downloads: 104)
I can only presume BM19 is either the worm itself, or the inner shaft (it isn't illustrated), as BM 42 is the lower thrust washer, and BM20 is the elusive "peg".
I wonder could it perhaps be the "key" which locks the worm to the shaft?
RE: Steering Column Assembly - Nick Turley - 04-06-2025
Bevel goes towards the worm.