How to Pull a Hub?

I'm working on pulling a 12 spline hub off of an Unstyled A, and it is having no part of it. I've bent my 3/4 inch puller so now I'm looking for some pointers.





Thank You

Id glass bead/sandblast wirebrush as clean as possible, heat up hub good n hot,mabe try a brg seperator behind hub ,your puller should work good luck

It would appear to me that the hub needs a abundant application of PB Blaster, sold most everywhere, and allowed to soak in, and several more apps of the same, and some beating on the outside of the hub, without the puller on it, and then after it soaks in, then try the puller again. WD Forty is not any good for this work.!>
I noticed the hub has the split running along the side. Is there something that could be put into that slot, to prevent the puller from squeezing tighter?
Also, i would try to shine up the slots and grooves, of the axle shaft the part that is outboard of the puller ring.
Another thing. If all else fails, rest the axle shaft, without the puller ring on it, and after a abundant application of PB Blaster and a good soak-try hitting the sides of the part you are trying to get off. good, sharp, heavy raps do more good than anything to allow the oil to get inside.
Last resort is a good sharp cutting disc, on a hand held grinder, and cutting length-wise opposite of the slot. that should allow you to remove that part. But, have a new one on hand, or at least, a good used one. A large chisel is handy for recaltritant parts to finally split apart after the grinding trick!
You might also try soaking good with PB Blaster, then driving the tractor around, turning one way sharply, then the other way. That might get it loose!
One thing--using a cutting torch can be done, but you run the risk of damaging the axle stub, too. Careful heat application could be done, but don't take the temper out of anything you want to use again.

You probably need to get some all thread that's longer than those cap screws you're using and either use a hydraulic ram or try a bottle jack to press that hub off. Some on here
use that setup tp pull their damper pullleys. Hal

Here are my suggestions:
1. Clean the area where the hub will have to slide. Get as much of that rust off as you can.
2. Heat the area above the expansion hole (the hole above that seperate the fingers of the hub). Heat it red hot. Might have to do it to all the holes to try and break it free. Once you have heated them all and soaked them with blaster then put the puller on it and heat the crud out of the area above an expansion hole and try pulling it. It might take some time to come off.
3. Once it is off make sure it is clean and burr free. You should be good to go at that point.

Good luck.

It's gonna take some more heat. A lot more heat. A lot lot more heat.

If your torch can't get it hot get some bigger tanks so it will.

It takes a big rosebud tip. And it takes some big tanks to feed a big tip.

It's gonna take more heat.

splines to the inside look to be in decent shape compared to ones on outside

unless it would cause damage inside the gearcase, I would try using heavy air chisel to drive hub a bit inwards, if you can get it to move that fraction of an inch you are on your way

then polish up the exposed surfaces like a mirror

I agree with supergrumpy. I would clean the splines good and lube on the inside. Then find a hunk of pipe that fits over axel and drive the hub on some. Then clean up exposed splines and gently tap it outword a little then lube and back in a little. Repeating process and gaining a little each time.

Not really any advice but the last ones I dealt with I had the axle out and put it in a 40 hyd press, when they came loose the press came off the floor a little bit and the guys from the office came out to see what happened. chris good luck

You'll never do it just with threaded bolts/rod. You need to get a hydraulic ram.
30 or 40 ton ram to start with.
Be very careful, as there will be a LOT of energy stored in there, and any breakage will result in stuff flying a long ways....!!

(quoted from post at 23:33:28 01/04/10) I'm working on pulling a 12 spline hub off of an Unstyled A, and it is having no part of it. I've bent my 3/4 inch puller so now I'm looking for some pointers.

<img src="http://i58.photobucket.com/albums/g256/1Dollar_2006/DSCN0383.jpg">

<img src="http://i58.photobucket.com/albums/g256/1Dollar_2006/DSCN0386.jpg">
Thank You

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Looks to me as if the hub you are pulling is pinching the collets onto the splines, so it doesn't look as if its designed to come off that way. I'd clean off all the rust & soak in releasing oil, then try driving the outer hub inwards with a piece of heavy pipe that fits over the collets & a sledge. If I see this right , that should then pop off those collets which can be removed, then the hub. It seems to me to be like a giant valve stem/cap/collet arrangement (with splines).

Heat is your friend.

Where do you live? I have a OTC 30 ton hydraulic two jaw puller. Takes two guys to lift and set it up. That hub wouldn't stand a chance.

Central Indiana. How close are you? I'm assuming Minnesota...

I'm with some of the others. Looks like your puller is making a pinch point at the front. Drive it back or put the puller at the very back of the assembly.