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Location: Rocky Mtns.
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I am not going to lecture you about using aftermarket parts but will tell you that a lot of mechanics who do this for a living refuse to use many of the aftermarket wheel bearings -- particularly those sourced in China.
The hub and wheel bearing are put into their final length by pressing. Once the CV shaft is inserted into the pressed hub assembly the axle nut must be precisely torqued, no more no less. I would be a bit concerned at this point about possible damage being done to the tapered rollers inside the bearing by use of both the impact wrench (hammering) and the long extension
with unknown torque.
On other vehicle where I was trying to save costs and use aftermarket the splines of the hub were manufactured too small relative to those of the CV shaft and the shaft just would not enter far enough no matter what. It happens. Close but not correct.
With the axle nut removed there should not be too much or too little shaft relative to the splined part of the hub. It should not look as though there is excess length of splines on the hub part under the nut. If different, the hub and bearing may have been improperly or incompletely pressed or the wrong dimensions.
The guessing game is magnified if an aftermarket CV shaft has been used or a different steering knuckle used.
If this were mine I would get OEM parts and do the job. If you shop around you can find deals on OEM. For example, I recently saw a new OEM hub a Toyota dealer had listed on Amazon for around $80. I bought it.
For the wheel bearing module you can get OEM by purchasing aftermarket. So you would be safe getting a KOYO, SKF, NSK or one of the major brands. Until recently most were reboxed KOYO or NSK anyway being the original used during production but be sure to look at the inscription on the side of the bearing itself, not what's on the box. For example a box labeled Timken could easily have the OEM bearing inside, but you must open and look at the inscription. Stay far away from Chinese bearings.
Finally, you are going to need a new seal between the hub (the part with lug stds) and the wheel bearing module. The seal is pressed together with the hub and bearing module.
Last edited by Taco'09; 05-15-2016 at 02:39 AM.