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MG MGB Technical - Rear Wire Wheel Hub, Banjo Axle Installation

Working on installing new wire wheel hubs on a banjo rear axle. I was able to press the hub off of the axle, but installing the old axle on the new hub has proven to be difficult. Our press at work is old and kept cocking it over, so I quit before it got me injured. Took it to a friends shop and we also had trouble, about 3/4 of the way on before it started damaging his very old press, which we had to rig up because it was a little too short. No problem with the removal, just the installation of the axle to the hub. Are they usually this much trouble? Thanks.
EKG

Hi EKG,

Recently on a french web site exactly the same issue was treated. The guy had to reach a truck garage to refit them in place with a a 30 tons press use, they even had to hit hubs te ease the proper fit.
HTH.
Renou

Hello EKG
You could try going to a garage and put them under a 4 post ramp to see if it will press it on

Ste
STE

Hi EKG
Try this-- Pack your drive shaft in ice for a couple of hours till it gets nice and cold right through. Put your hub in the oven and get it as hot as you can (1/2 an hour at full temp should do it) Have the press set up ready to go then as quickly as you can before the heat gets a chance to transfer from one part to the other press your axle and hub together. Don't forget to use gloves as the hub will be hot enough to give a decent burn.
Hope this helps Gary.
Gary

Thanks for the replies. Took them to a truck shop this morning, and I am getting ready to pick them up now.
EKG

Well, one step forward, two steps back. Decided to install the new hub/axle shaft assemblies on to the hubs without the differential to check the shafts. Gave them both a good turn,and well, it looks like one shaft is pretty bent and the other slightly. I believe that my old press did the bending of the one, but you have to really look to see the other shaft not perfect. Now, I took 3 other hub/axleshaft assemblies that have never been apart and they are not perfect. Is there some tolerance for the shafts not being perfectly straight? I know that one I have is way too bent, but the others? Is there anyway to straighten a bent shaft. It seems like a machine shop could, and it would not weaken the axle, since there is not really in stress on the length during operation. Any ideas?
EKG

EKG,

It's highly preferrable to make them straight again to avoide outer bearings damages. They must be steel made, so In order to straighten them back, I would suggest to dispose them on two "vees" and check out the runout with a comparator along the shaft itself to localize the anomaly. That given, set up the offset upmost and apply a vertical pressure in order to realign them. But I can't tell more about the amount of depth movement.
Regards.
Renou

This thread was discussed between 11/04/2008 and 14/04/2008

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