Front Hub/Drum Replacement-Need HELP--FAST

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Front Hub/Drum Replacement-Need HELP--FAST

Postby sgmjsh3 » Fri Dec 14, 2007 9:05 pm

Hi-
I purchased new drums, hubs, bearings, lugs, etc from Ron recently. I will immediately say I am one of the biggest fans of Ron on this site, so please don't misunderstand.
Anyhoo, got everything and headed to a local machine shop where they pressed the studs and bearing races. The guy at the machine shop actually wanted to mount them so the large flange on the hub was inside the drum, but I showed him the original and that's how we did it.
Went to install today, and couldn't get the washers and nuts on the spindle. I could get the 1st washer , then the nut, and that was it. There was barely a thread sticking out of the spindle. Took it all apart again, the inner seal is flush with the hub thought maybe I didn't seat it right. Put it all back together, same thing.
Put one of the old hubs back on, washer, nut, lock washer, nut, just like it came off.
I looked at the old and new side by side and attached the pictures.
There is almost a 1/2 inch difference between the 2. I think what's happening is that the drum is hitting the brake backing plate before the hub is fully seated.
Is there something different with the repro/replacement parts? Should the hub have been installed on the inside? Are their different spindle nuts?
I'm under a bit of a crunch, I have to have it in the port on the 28th to ship it to Germany.
Need advice, help, everything!!
[img][img]http://i242.photobucket.com/albums/ff318/sgmjsh3/BrakeDrumss002.jpg[/img]
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[img][img]http://i242.photobucket.com/albums/ff318/sgmjsh3/BrakeDrumss001.jpg[/img][/img]
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Postby Mike Seymour » Fri Dec 14, 2007 9:56 pm

On the replacement drum, the hub should be mounted in the inside of the drum. This was done so the drums can be removed without removing the hubs.
If you have any questions, call Ron Monday morning.
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Postby sgmjsh3 » Fri Dec 14, 2007 10:04 pm

I was sort of thinking this after I got back in the house and had a drink to cool me off :(
are the ruined or do you think I can take them back to the machine shop, press the studs out and then repress them with the hub on the inside?
Ya know I got my fingers crossed.
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Postby Mike Seymour » Fri Dec 14, 2007 10:49 pm

You should be OK, if you support around/under the studs when you press them back out....something hollow like a socket. Thread nuts down a ways on the studs so you protect the threads when you press them out and you should be able to re-use them. Take it slow and don't be tempted to use a bigass hammer. :D
Last edited by Mike Seymour on Fri Dec 14, 2007 10:55 pm, edited 1 time in total.
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Postby artificer » Sat Dec 15, 2007 8:21 am

What you received were for later model outside mounted drums and the same thing has happened to me (wrong parts). What would the Jeep police say?
The guy at the machine shop actually wanted to mount them so the large flange on the hub was inside the drum, but I showed him the original and that's how we did it.
Should have taken notice as he was right!
In my case the problem was obvious and no one assembled them the wrong way, but it cost a heap more time and money than it should have, to do the job.
You will need to get o/s studs & get all centred, pressed in and swaged or I turned 4 steel plates the same thickness as the drum mounting, drilled them to correct stud centres and tack welded the studs to them so there was no way the studs could turn in service. I used original size new studs all with RH thread.
Then drill and tap each old hub to suit the 3 alignment/securing hub to drum screws. Assembled drum/hubs may need to be lightly skimmed to ensure concentricity of drum to linings.
In hind sight it would have been better and less expensive to have bought new hubs, with studs and drums.
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Postby sgmjsh3 » Sat Dec 15, 2007 12:27 pm

OK, well, I'm headed back to my local machine shop. I guess I'll have to listen to 5 minutes of "I told you so..."
They are actually pretty user friendly. I knew the drums looked bigger when I got them, but had no idea that the hub went on the inside. Live and learn.
OK, wish me luck, I'll let everybody know how it goes, as always, thanks for the advice/recommendations/support.
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