Loose Lug Studs

Loose front wheel studs on 10" drum breaks 66 CJ5. New Drums, Original Hub, New studs

I had my old studs pressed out. They held the drum to the hub really well. I ordered new drums, new studs. Had the old studs pressed off. Guy at the shop said I could just hammer in the new ones with a BFH. That worked well for a while but now all the studs are loose. They don't rotate when tightened but they go in and out. I have no idea what swaging is but from what I read is you can have them pressed on, BFH and punch (I didn't use a punch), or put the lug nuts and use an impact to compress everything.

What do I do to do this right?

Lance

 

Swaging is deforming the metal by pressure or impact. In this case I would guess they mean to shrink the holes, then press the studs in.

 

If the swaging on the original studs was not removed and the studs were forced out of the hub It can enlarge the stud hole in the hub flange. I suspect this is what happened. If this is the case replacement hubs may be in order.
The new studs should be a press fit to install.

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I ran into a similar problem n August. Studs were loose on my D30 hubs, turned out they had been relaced by the PO with DORMAN parts, when we mic'd them (and the ones in the bin at the store) we found that they did not meet the spec listed in the DORMAN book or JEEP manual. Ordered a set from CROWN, no more issues.

 

I'm in the middle of the same problem except some of my studs spin so I temporarily tack welded them to the old hub till my new hubs arrive.

 

Here are some pictures. Only one comes out. One wiggles. They seem to have a raised outer face. Possibly from being pressed out? None of them hold to drum. Let me know what ya'll think.












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Nickmil appears to be on the money. The old studs were pressed out which seems to have enlarged the holes.

As far as swaging goes, this Link gave me a better idea of the process.

http://www.fordgarage.com/pages/swaging.htm

Seems the stud is pressed onto to the hub along with the stud and the swage is applied to drum to secure it to the stud. The swage pushes the metal on the drum around the stud and compresses it around the stud. That's my initial understanding of it. Can someone verify that?

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That swaging link is a different vehicle and a different process.

They are actually "riveting" the stud to hold the hub and drum together, by expanding the shoulder to fill a countersunk hole. And, no they are NOT pushing the drum metal, they are reforming the shoulder of the bolt. The studs you have are splined and press in/press out, no riveting type expansion needed. It even says that in the third paragraph.

True, in my earlier post I postulated that perhaps you had been advised to shrink the hub holes by compession-swaging them, and possibly that could work in your case. But I'm only guessing.

 

He usually is.

 

Deleted

 

how would i go about compression-swaging them? Nut bolt and impact wrench? Heat? Special tool? Is there a write up some where?

 

I'm not even sure about the concept, except as a shade-tree blacksmith kind of theory. You could ask at a machine or metal-working shop. One with a press.

 

I wouldn't recommend my method to ANYBODY ...my situation is unique & I'm dealing with 2" wheel spacers...I THINK I've got a grip on the situation but won't know for sure until I get my new hubs...If you want to "do it right", get new hubs...

 

I'll track down a machine shop sometime this week.


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For those that have welded, is your drum basically loose? I wouldn't think it would matter as its secured by the wheel and lug nuts. I've been wrong a few times already in this thread though.

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Yes. On my new drums the holes are larger than the original drums & they come off the hub easily...don't weld on the drum...IF, AS A LAST RESORT, you decide to weld the studs, only weld the studs to the hub...

 

Im getting my buddy's d30, but I've sunk too much money into this 27 to not run it for a while....

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"once the wheel nuts are tightened up what's the difference?"

I would agree, Howard. But if it was my Jeep, I'd be just a little nervous they might spin the next time I tried to take OFF a rusty lug nut.