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Before disasembly is the correct time to make sure those suckers will
come apart. If you have to snug it up against a parking barricade to
keep it from moving, (then jump on the breaker bar) that's what you do.
THEN you take it home to your garage, remove the wheels, and procede.
The manual from Chilton's is pretty good if you don't want to get the
'Helms' version.

'Curly'

Just how long is your breaker bar?  Sound like not long enough.  You're
probably needing to exceed 200-230 pounds (I don't know Honda specs on
this); that's quite a bit.  If you use a five foot jack handle as an
extension, it'll pop right off.  Or you could break a cheap ratchet
doing this, so be careful not to damage yourself or the car by the
surprise.

The bigger challenge is not to overtighten the nut when re-assembling.