Are Gen 1 and Gen 2 hubs interchangeable?

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Off Road SHO

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Okay, so here's my dilemma. I found both 94 steering knuckles but one has a bent hub in it. The hub is the splined part with the lug bolts attached to it, that the axle shaft goes through.

I have some pre-94 knuckles with hubs that are in better shape and they "look" like they are the same. But are they? I'd hate to pull them all apart just to find out they're different. I can't see Ford making the bolt pattern the same and not the shaft part that rides in the bearing.


And that brings up another problem: You DO press the hub out of the bearing/knuckle first and then press the bearing out of the knuckle, right? I'm using my press and have bent the **** out of my big bearing grip.

Thanks

Tom
 

Racer X

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All front hubs are the same from 1986 until 1995, as far as I know. The only difference is in the wheel stud length; non SHO is shorter sometimes.

On the disassembly order:
Hub from bearing, then bearing from spindle. It's kinda of impossible to do it backwards.

Good luck with that. :thumb:
 

Shoaz

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What he said.

And remember, I did a hub bearing change on the Pumpkin using your press, so it's definitely possible. :cool:
 

Off Road SHO

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Shoaz said:
What he said.

And remember, I did a hub bearing change on the Pumpkin using your press, so it's definitely possible. :cool:


Yeah, I've already done one separation, but on the second I'm having trouble. Time to make something.

Tom
 

Racer X

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Tom, if you get jammed up and break the hub you're trying to remove from the bearing, I have one in good shape lying around that you can have for shipping. Let me know...
 

Off Road SHO

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Thanks for the offer but I think I'll just go to the junk yard now. Turns out one of the knuckles has been beat on so bad that the landing for the bearing is dimpled inward. I didn't find this out till after I spent 45 minutes bead blasting all the rust off of it. Grrrrrrrr!

Tom
 

pjtoledo

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Racer X said:
All front hubs are the same from 1986 until 1995, as far as I know. The only difference is in the wheel stud length; non SHO is shorter sometimes.

On the disassembly order:
Hub from bearing, then bearing from spindle. It's kinda of impossible to do it backwards.

Good luck with that. :thumb:


To bad I don't have a digital camera. I have 3 different style front hubs in the basement. Though there are 3 different types, there is really only 1 area of concern. Thats the diameter of the lip the rotor goes over. The same lip the hole in the center of the rim rests on. Early Taurus' had small holes, later, not sure which years, had larger holes. I think the change happened when Ford went to the larger 11" rotors. That lip on the hub grew in size so the old 10" rotors would not fit the new 11" system.
You don't need a press to change front wheel bearings, I have done many with a 1" fine thread rod and various spacers etc.
Getting the old hub out is fun, just cradle the kknuckle assembly in your arm, drop a 3/4" bolt in the back side of the hub, and hit it a few (quite a few) times with the small end of a sizeable ball-pein hammer. When the bolt head goes in too far to hit, flip it over and whack the theaded end. The hub falls out and almost hits your foot in about a minute. Good thing you won't be needing the old bearing, it gets worse!
For removing the bearing itself, drop that 1" rod thru the bearing, apply the reducer you bought at the plumbing section of the local hardware, a couple of big washers, and the nut. What size reducer you say?? The size that has a hole slightly larger than 1" on one end, the other end matches the inner race. ( I have also found that the front crankshaft sleeve from a 429/460 works, but you'll need more washers ) That pushes on the bearing, now you have to come up with something to recieve it on the back side. ATX accessory pulley. The stamped steel kind thats hollow in the back. Take the bearing out of the pulley, you'll find that the pulley lines up nicely with the back of the hub, IF you grind a strategic notch in it. Lay any 'ol piece of heavy stock across the pulley to spread the load, add washers and the nut, start cranking. The bearing will bottom out in the pulley leaving about 1/4" still in the knuckle. Just hit it a few times, it'll pop right out.

Oh, now you want to put the new bearing in? Kinda demanding aren't 'ya?
This part is cool. Take the bad hub, remove the studs, cut/grind the front lip off so it's flat. ( or pick up a floor ****** at the hardware) That goes against the front/outside of the knuckle. Set the new bearing in place to be pressed in, set the old bearing against it to push it in. Place some heavy stock across the back side of the old bearing so the load is transferred to the outer race, add washers, nuts, and start cranking.
I haven't calculated the clamping force, but 100 lb-ft on a nut on a 1" fine thread rod is more than adequate to press the bearing in and out. When the new bearing bottoms out I whack the outer race of the old "pressing" bearing to get it to seat properly.
Don't forget to remove the snap ring, they are stronger than you think.


Have fun.

Perry
 

pjtoledo

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Off Road SHO said:
Thanks for the offer but I think I'll just go to the junk yard now. Turns out one of the knuckles has been beat on so bad that the landing for the bearing is dimpled inward. I didn't find this out till after I spent 45 minutes bead blasting all the rust off of it. Grrrrrrrr!

Tom


Take a closer look, you'll find that the back side of the hole is much larger than the front. Where the outer race contacts the bottom is not on the thin lip that is easily bent, but farther back in. You may be able to save that knuckle.


Perry
 

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Perry, the 11" rotors weren't put into use until 1996, which would mean that Gen 3 and 4 hubs aren't the same as Gen 1 and 2. Or at least I'm guessing, anyway.
 

pjtoledo

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Racer X said:
Perry, the 11" rotors weren't put into use until 1996, which would mean that Gen 3 and 4 hubs aren't the same as Gen 1 and 2. Or at least I'm guessing, anyway.

My 95 came with 11" rotors. So did all Taurus and Sables in 94-95. You may recall I am the original owner of a 92 and a 95MTX, I've had plenty of time to see what these cars are made out of. I have now found 4 front hub variations in the years 86-95. The axle splines and bearing surfaces are all the same, ditto on the bolt pattern. I have not yet checked the offsets.


Perry
 

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Oh... you rounded up.

94-95 used 10.9" rotors, 86-92 used 10.2" rotors. I assumed you meant the 96-99 SHO/01-present Taurus size of 11.6"

On the variations of the hubs that you found, are all of these hubs OEM, or are they aftermarket? If there are aftermarket parts in that grouping, that might explain the variations that you've found over the years.
 

Off Road SHO

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Perry, yes, unfortunately, it is bent where the bearing's outer race touches. Someone evidently was having trouble getting something out and took a BFH to it. The backing plate is also quite bent up sooooooo off the wrecking yard I will go.

BTW Perry, that write up on the hub and bearing removal was quite imformative. You should add some pics to that and make it a stickie on here. I do have a press but it takes so much time and effort to set the knuckle up properly that the hammer and bolt idea looks a lot better.

Tom

pjtoledo said:
Take a closer look, you'll find that the back side of the hole is much larger than the front. Where the outer race contacts the bottom is not on the thin lip that is easily bent, but farther back in. You may be able to save that knuckle.


Perry
 

Shoaz

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Tom, when I changed the bearing on the Pumpkin with your press the hardest part was just finding enough random stock laying around to hold things up appropriately and distribute the ram force. It went quite easily other than that.
 

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