Quote:
Originally Posted by Mike Noc
All I can think of is that the rim of the inner race of the bearing is quite narrow and it is hardened steel, so if the washer was to turn against it then the washer could pick up and get damaged as the tightening torque is quite high.
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In the absence of anything obvious that seems like a plausible explanation. I wonder how much torque would be needed to shear the lug off sideways? Much more than is specified torque for the nut I reckon. And it (the washer) has to be turned by friction or surface-surface interference. The torque would surely be collosal. Maybe the washer was flawed somehow during its manufacture.
Quote:
Originally Posted by spyder
should it be replaced? what is the purpose of the tab once it is all torqued back up?
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I would certainly replace it. The tab prevents the washer from turning as the nut is torqued up (or should do). This ensures the inner race is compressed axially, with no radial movement that could spall the contact faces.
TC