I've seen this question asked many many times, but no-one seems to be able to answer with any certainty, lots of "my mechanic mate has done loads, he said..." or "I read somewhere once that..."
I'm pretty sure my NSR bearing is fried. It's been making nasty squeaky/clicky/crunchy noises for a while (TBH, I thought it was a CV joint...). Checked today & there was a good 5mm play in the hub. So... popped the safety cap off, and sure enough the nut is loose.
Now, I've done TRBs before now, and I know you set the pressure on those using that nut. And that whilst they're not supposed to be loose, cranking them up tight is also a big no-no. But IIRC the LS400 has dual-race ball bearings, not TRBs?
So, my questions are:
1) Should that nut be done up murder-tight? If so, I will do so. For now I've tightened it per a TRB - ie. enough to stop the wheel wobbling. It now crunches and squeaks most spectacularly.
2) Is the bearing a press-fit, or slip-fit? i.e. is it a relatively simple job to replace? Do I need to remove the entire hub assy to get to it?
I have a 1 ton press, hopefully that'd be enough to remove/refit any bearing if it is a press fit.
Cheers!
Ade.
PS: Car has just passed 260K miles, so I guess the bearings have done well, assuming they're originals (nowt in the history file about replacements, that I could see)