Steering Column Assembly

[Chris KC]

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!

[Howard Wright]

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

[Chris KC]

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?

[Nick Turley]

Bevel goes towards the worm.