Hub nut removal...

[spikenipple]

Any tips?
I've already broken my 3/8" drive bar trying to undo it (Halfords sh!te) so I've got a quality 1/2" drive bar on it with a 3ft tube over it and I still can't get it to budge 

I need to change the outer CV boot for the MOT on Tuesday.

[madmanmart]

Simple really....... bigger bars

Use 3/4" if you have it.

[Gavv8]

I put a short scaffold bar over the socket extension bar and then jacked it up with the trolley jack, came loose eventually but it took a while.

[Len]

Oh no! Hope mine isnt that bad!

What size is it? Think I have most of the big sockets.

[itavaltalainen]

iirc that nut is tightened up with somewhere round 210nm.... i.e. at 1m distance you need to apply 21kg and that is when just done up... add a little bit of rust, salt,.... 1m pipe and some muscle will get it loose thou.

[Len]

So my 19 stone should have no problem!

[Screech16v]

iirc that nut is tightened up with somewhere round 210nm.... i.e. at 1m distance you need to apply 21kg and that is when just done up... add a little bit of rust, salt,.... 1m pipe and some muscle will get it loose thou.

^^^ love the maths ^^^ 
Our hub spanner is a meter of 2x1" u channel with the socket welded on the end, nothing can break .

[kempie]

Just done it but it was all off the car (hub & dr shaft) and we had 3ft bar and hit it with the hammer

[itavaltalainen]

here's some more math for you.... 

you only got full force for loosening bolts as long as the bar is at horizontal, since gravity only works down. the force exerted on bar will decrease with every degree you go down. so weight alone is not the answer

[spikenipple]

I've got a 30mm socket 12-point socket on it, with a 5" extension bar (can only do it with the wheel on and the socket doesn't protrude far enough), then a 24" long 1/2" drive breaker bar with a 3ft long tube over it...still won't move before the socket slips off of the nut (awkward as fooook).