Quote:
Originally Posted by 2Torqued
On 2816 i found that the splines on the back of the hub would bottom out before the proper torque was applied to the bearings. we machined out about .040 of the splins in the back of the hub so that the assembly would tighten up correctly. without doing this the bearings never received the right preload and would start to separate and loosen up in the housing.
In the picture you can see the counter bore. Once we did this not any more wheel bearing problems.
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Some cars in the 2800-2900's range may have that issue. There is a procedure for rectifing this concern. If you can "rock" your rear wheel up/down, fore/aft wih the rear jacked up you may have the issue. We have had one car that had the concern. The cause was a "stack up" of tolerences between the hub machining and the alxle vendor. As stated the axle nut bottoms out before the splined shaft is fully seated in the hub allowing the hub to "walk" in and out on the splines. The factory repair involves machining the rear face of the hub to allow the splines to pass through the hub further. I can provide a factory diagram outlining the procedure. It is not a difficult procedure.