Quote:
Originally Posted by jdd
The method I used recently for undoing the CV nut was to remove the wheel and use a punch to knock back the indented part of the nut.
I then removed the centre badge/cap from the wheel and refitted it and lowered the car onto the ground.
I used a standard length 36mm 12 point socket with a short extension and a long breaker bar.
Support the head of the breaker bar at the correct height (I used an adjustable axle stand), making sure the socket is fully engaged over the nut, then apply force to the breaker bar.
I had to actually stand on the end of the breaker bar and bounce a little before it finally started to move.
It’s also a little easier with an assistant sitting in the drivers’ seat with their foot on the brake pedal.
Refit is just the opposite procedure making sure to use a new CV nut.
After tightening remember to use a punch to dent the outer collar of the nut into the groove on the end of the CV joint.
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Nice description here. Many subtle tips here, that I'm sure will help for the extra-difficult removals. I'll make a note of this.
Regarding other comments, yes, just a screwdriver + light hammer will bend out the crimp thing. And it's not really to prevent it from being removed, it's to prevent it from removing itself.
Regarding torque, I have a torque multiplier which will scale things up by a factor of 3.3x (as I recall), which is a nice solution for high torque settings. But also ... I have not undone the axle nuts on my x5 yet, but on other cars, when I remove, reinstall, and torque, I (always, I think) find that the crimp ends up at the same spot, regardless of how difficult it was to remove the nut vs. to re-torque it.
So for those without a 310 ft-lb torque wrench, torque multiplier, or extension bar, if your estimate of the right torque causes the nut to line up with the crimp in the original position, that should be taken as a confirmation that things are right. And if not ...
Also, for high torque items like this, the manual will often be specific about surface preparation, for example, surfaces clean and with a light covering of engine oil. Since friction is a major component of the applied torque, things like these instructions that affect applied torque should be followed.