Steering Control Bracket Tube

[colina]

Could someone explain how the steering Control Bracket Tube (BM136) is secured? Parts book PL670_F pages 39/40 states that it includes socket BM47 - this is shown on pages 41/42. The drawing on page 40 appears to also show BM47 - is BM47 secured to BM136 somehow?
In my steering box BM47 has been 'staked' to the securing nut (BM48) by 4 punch marks - is this normal? Also, the  Control Bracket Tube protrudes below BM47 - presumably this is incorrect (and should be flush) as I think that the tube needs to stick out at the top so that the Control Bracket (BM128) can clamp to it?

There is also a bush (BM142) at the top of the Control Bracket Tube - is this just a push fit into the inner column?

Finally, what does the Peg (BM20) do?

Thanks

[Chris KC]

Posting the illustration might help Colin.

[Howard Wright]

Hi Colin

From memory (it was a few years since I had a steering box apart) the control bracket tube (136) is soldered on to the control bracket tube socket (47). I think you are right in that the control tube protrudes sufficiently at the top so that the control bracket (128) can clamp to it.  I don’t see any need for it to protrude at the bottom.

Cheers

Howard

[colina]

Relevant pages from PL670_F        

[Chris KC]

Thanks Colin - the illustration helps to clarify the question, but is also informative for other people stumbling on this thread later on (and indeed to me!)

I believe Howard is right in saying 47 is soldered to the tube, and you are correct that 47 is locked to to 48 by punch marks. I think you would have to carefully drill these out in order to unscrew the nut, though I have never personally had one apart that far.

This is something I may have to tackle soon so I'm interested in any responses.

[Robert Leigh]

You do have to drill out the punch marks in my experience.