Morris Minor Owners Club

myoldjalopy wrote: ↑Tue May 27, 2025 4:54 pm On the basis of Bill's and Phil's comments I was going to get something like this: https://www.primetools.co.uk/product/me ... 8-175mm-7/
But if the nut on SII's is different to later cars, I'm still not quite sure. Can anyone confirm exactly which size box spanner I will need for the SII steering wheel nut?

myoldjalopy wrote: ↑Wed May 28, 2025 11:24 am Well, in my manual, the service tool is given as 18G310, a steering wheel extractor, and is mentioned in the sections for the MM and SII and the one for the 1000 model. In any case, the extractor has nothing to do with the size of the nut, as that has to be removed before the extractor can be used.
As the earlier section mentions 'a 7/8" box spanner' and the steering wheel extractor, and the section on the 1000 model simply mentions removing the nut and then using the extractor, I am not convinced that the nuts are not the same size for all models.

Wes wrote: ↑Wed May 28, 2025 1:03 pm I'm sure its been said before but my dad once told me when you remove the a steering wheel dont take the nut all the way off when you try to release the wheel from the splined column. This way you don't smash yourself in the face when it lets go!

myoldjalopy wrote: ↑Wed May 28, 2025 7:00 pm Bernie - I read my manual correctly the first time. It is clearly an earlier edition to yours, yours is issue 5 and mine is issue 2. Mine makes no mention of tool 18G 512 at all. Neither does it mention two-spoke wheels, as they clearly were not in existence when my manual was published. I am still not convinced that the nuts on different models were different sizes, the tool 18G512 may well have been created after my manual was published as an alternative to a humble box spanner. I think if Stephen got his car's steering wheel nut off with that box spanner the nuts must all be the same size............

geoberni wrote: ↑Wed May 28, 2025 7:51 pm

myoldjalopy wrote: ↑Wed May 28, 2025 7:00 pm Bernie - I read my manual correctly the first time. It is clearly an earlier edition to yours, yours is issue 5 and mine is issue 2. Mine makes no mention of tool 18G 512 at all. Neither does it mention two-spoke wheels, as they clearly were not in existence when my manual was published. I am still not convinced that the nuts on different models were different sizes, the tool 18G512 may well have been created after my manual was published as an alternative to a humble box spanner. I think if Stephen got his car's steering wheel nut off with that box spanner the nuts must all be the same size............

Ah well, it you're using a really old manual...
I took those images from the pdf version I have, it's the same info as in the hard copy 14th edition that can be brought these days.
I'm confused to hell by the whole subject, after all the different people coming in with what they used on their cars.

All I know is mine is 1.5" AF on the vernier, so that's basically 7/8"W. What someone with a S3 or S5 does is down to them.

However, note that Stephen has not said which end of that Box Spanner he used on his S5.
It's marked as 3/4 x 7/8W....
Guess what....
Those are exactly the 2 sizes we've been talking about for the past few days.
Bill has posted that he used a 3/4W, which is 1.3" AF.

The ruddy list over in Technical says 3/4 BSW, yet the nut on my SII is 7/8W.

Bill_qaz wrote: ↑Wed May 28, 2025 9:15 pm
Berni
3/4 whit is 7/8 bsf is that part of the misinterpretation in the various lists.?

Whitworth (inch).BSF.(inch).Actual Metric.(mm)
3/4* 7/8* 33.02

1.3" across the flats as you said
In the manual quote highlighted in your post it simply says 7/8 box spanner, not saying whit or bsf.

Always remembering it's the nut behind the wheel that causes most accidents

myoldjalopy wrote: ↑Tue May 27, 2025 4:54 pm On the basis of Bill's and Phil's comments I was going to get something like this: https://www.primetools.co.uk/product/me ... 8-175mm-7/
But if the nut on SII's is different to later cars, I'm still not quite sure. Can anyone confirm exactly which size box spanner I will need for the SII steering wheel nut?

philthehill wrote: ↑Thu May 29, 2025 4:38 pm Get the correct socket, grind away the concave/hollow end so it sits fully flat against the steering wheel boss.
Then you can undo the nut with a socket breaker bar and then when refitting you can then torque it to the correct torque setting of 41 lb ft.
You cannot set the torque of the steering wheel nut with the box spanner.
If there is a torque setting quoted it is always best to use that torque setting rather than a guesstimate.

philthehill wrote: ↑Thu May 29, 2025 7:59 pm BMC Wksp Manual AKD530L section General Data Issue 4. 71585. General Data 10. Torque spanner readings - Steering wheel nut 41 lb ft (5.7 kg. m).