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<p>Simon,</p>
<p>A few years ago, I had just begun a long road trip in my BJ8 with
my son. A hundred or so miles out of town the car developed a
loud, grinding, 'squeal' at the right front. Assuming wheel
bearing damage, I got the right front wheel up on a jack and did
the usual testing. All seemed normal, so I got back on the road
and the noise, of course, resumed. A few hundred miles down the
road the noise stopped.<br>
</p>
<p>We continued the trip--probably did 2-3K miles--and when I got
home I tore into the hub. Sure enough, that washer with the inner
tab had spun and turned about 90deg in the direction of forward
travel, then stopped (the noise was likely from the washer
grinding against the inside of the hub). So, yes, the tabs on
these washers can shear and the washer can rotate. I don't recall
bearing damage, but I likely replaced both wheel bearings and
associated parts on the car whilst I was in there. If your other
bearings were in good nick I think we know what caused the problem
(it's possible your bad bearing ran dry as well).</p>
<p>I don't know if this was an original part, or it had been
replaced by a previous owner, but I blame the 'usual suspect:'
sub-par aftermarket parts manufacture. Also, I think the torque
specification for the big castellated nut that holds everything
together--IIRC, it's 70lb-ft--is a bit specious, as you have to
line up a slot on the castellated nut with the hole in the axle
threads for the cotter (and you'll have no idea what the actual,
final torque is after you turn the nut to line up with the hold).
Since my experience, I always torque the snot out of that nut;
i.e. I torque the nut to nominal or, nearly as tight as I can,
then put a big breaker bar on it and continue torquing until at
least the next slot (or the next, or the next ...). That is a big
nut and 'bolt,' it would take a gorilla to snap it off or
cross-thread. I've had no similar issue for 100K miles or so,
though I just went through my hubs again and a couple of the
bearings were worn, but had also been run dry. This time, I
sprung for (hopefully) better grease:</p>
<p><b><a class="moz-txt-link-freetext" href="https://tinyurl.com/y9ljd69a">https://tinyurl.com/y9ljd69a</a></b></p>
<p>This stuff feels--for lack of a better word--'slipperier' than
petroleum grease I've used. I have high hopes for it.<br>
</p>
<p>Bob<br>
</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">On 1/28/2018 7:30 AM,
<a class="moz-txt-link-abbreviated" href="mailto:simon.lachlan@homecall.co.uk">simon.lachlan@homecall.co.uk</a> wrote:<br>
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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal">Some wisdom from the gurus please.<o:p></o:p></p>
<p class="MsoNormal">We’re looking at a MKII BT7 here. Disc
brakes and wire wheels.<o:p></o:p></p>
<p class="MsoNormal">Now, I’ve “done” bearings before and maybe
did this one wrong last time……<o:p></o:p></p>
<p class="MsoNormal">So, I took it all apart. No worries.<o:p></o:p></p>
<p class="MsoNormal">The outer bearing was completely shot.
Surprisingly so as there had been very little movement indeed
when moving the wheel once off the ground. And no
“crunchiness” to the rotation. Certainly no noise or panic
inducing anything.<o:p></o:p></p>
<p class="MsoNormal">I cleaned everything off in white spirit
and, once all was pristine and dry, I gave everything a quick
look. <o:p></o:p></p>
<p class="MsoNormal">See item 4, “washer”. The tab on mine had
broken off in the groove on the hub. Now, I see that this
washer is perhaps better called the “locating washer” when one
is looking at the picture for the disc wheel setup. <o:p></o:p></p>
<p class="MsoNormal">But I don’t really see what the tab is good
for……surely the washer can’t rotate once everything is
tightened up, shims in situ etcetc? <o:p></o:p></p>
<p class="MsoNormal">Can the washer have been rotating? Surely
not? And could the tab’s fracture have anything to do with the
condition of my outer bearing?<o:p></o:p></p>
<p class="MsoNormal">(The inner bearing seems fine).<o:p></o:p></p>
<p class="MsoNormal">And, yes, I will get a new washer and I’m
replacing both bearings.<o:p></o:p></p>
<p class="MsoNormal">It’s just curiosity really.<o:p></o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Simon<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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