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Remove the Hubs

At this point of the installation, the instructions will vary depending on your truck. Trucks with Automatic Differential Disconnect (A.D.D.) hub assemblies are installed differently than trucks with manual locking hubs.

This installation will cover trucks with A.D.D.

To remove the hubs you will need a hydraulic press or similar tool. I used a 12 ton shop press. Don’t even try thinking that you can do this with c-clamps, vices, hammers, WD-40, or whatever tools may be at your disposal. This hub is pressed in tight. If you don’t use a press, then you will damage it.

Consider this: In the future, if you plan to do any automotive work that requires pressing (differentials, axle shafts, hubs), then you may want to consider purchasing a hydraulic press. I bought mine brand new in 1997 for $229 and it has definitely paid for itself. As I mentioned at the start of this install, having a shop do the press work for you in these next few steps will cost in the neighborhood of $175.

25aThis is what the hub looks like after being pressed from the knuckle.

Actually, after it’s been pressed out of the knuckle, one of the inner bearing races will be stuck on the shaft. You will need a dremel with a tiny cutting disc to cut the race off.

25bThis is what the factory knuckle looks like after the hub is pressed out.

Look carefully at the picture. The yellow arrow points to a pressed seal that Fabtech does not include with the kit. You need to remove this seal as carefully as possible because you have to reuse it. Inspect this part thoroughly and if you have ANY doubts about its quality, then just buy two more.

Now look beyond this seal inside the knuckle. You’ll see a round piece with teeth on the outer edge. This is the magnetic ABS ring. Take note on how it sits inside the knuckle so you can reassemble it properly. Now look at the blue arrow. I’m not sure what this piece is, but it was sitting in the recessed groove on the ABS tone ring. One side is flat and the other side is grooved. Take note on how it sits inside the knuckle so you can reassemble it properly.

Now look at the red arrow. This was the inner bearing race that was stuck to the hub shaft after it was pressed from the knuckle. If you look closely at it you can see where I used a dremel to cut one straight line to remove it from the hub shaft. When you cut yours off, make sure to do it like I did with only one cut and save it. Later on you will use this inner race to press the new bearings onto the hub without damaging them.

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