Basic Repair - Rear axle lug stud replacement - JeepForum.com

 
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post #1 of 7 Old 03-19-2010, 09:06 PM Thread Starter
Mean Max
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Basic Repair - Rear axle lug stud replacement

Here is a simple easy repair that I just did on my wife's '93 YJ's rear axle. I replaced it & took a few pics along the way. For anyone who has little mechanical experience & has never done this repair, it's very simple and will only take a few minutes.

So you have a lug stud that is broken or has damaged threads. How do you replace it?

First you jack up the rear axle & remove the wheel & brake drum.
Make sure the wheels are properly chocked, the Jeep is properly supported with jack stands, and the parking brake is OFF.


Rotate the axle until the lug stud you are replacing is at the 3 or 9 o'clock position (depending on driver or passenger side) so that the damaged stud is closest to the front of the Jeep. This will keep it from damaging the brake components as you drive it out. Use a large hammer to pound out the offending stud.


Make sure to retrieve the old stud if it ends up landing in the brake springs & hardware like this one did.


Spray a little WD-40 (or any type of light oil) on the new stud & insert it from the rear of the axle flange. Use a larger nut as a spacer between the axle flange and lug nut & tighten the nut until you can see the stud seated into the flange.


Here's some tips.

1) Get at least an extra lug nut or two. You will likely damage the one you use to pull the stud into place during the repair. Use a regular style lug nut that is open on both sides.

2) Use an impact gun if you can. I have a 110 volt impact gun that I bought from Harbor Freight for about $39.00, and it worked like a champ.

The parts store can look up the proper lug stud by model application. The YJ's use a 1/2" X 20 size lug stud.

Max



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No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

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post #2 of 7 Old 03-19-2010, 09:11 PM
Fhajad
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Would the repair for the front disc brakes be the same way? That's the one that broke on mine.

Good write up regardless.
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post #3 of 7 Old 03-19-2010, 09:30 PM
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Mean max, I cant tell by the pic if you did this or not but, If you place a washer behind the large nut it allows it to spin some and also putting alittle grease between the friction surfaces but not on the stud itself actually helps in saving the lug nut. Otherwise as you showed, thats the easy way to replace a wheel stud front or rear withou goin and buyin the tool to do it. Which essentially does the same thing but costs more.
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post #4 of 7 Old 03-19-2010, 09:46 PM Thread Starter
Mean Max
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Quote:
Originally Posted by Fhajad View Post
Would the repair for the front disc brakes be the same way? That's the one that broke on mine.

Good write up regardless.
Thanks. The front ones are quite similar. You'll need to remove the brake caliper, & the brake rotor too.
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Originally Posted by erockz View Post
Mean max, I cant tell by the pic if you did this or not but, If you place a washer behind the large nut it allows it to spin some and also putting alittle grease between the friction surfaces but not on the stud itself actually helps in saving the lug nut. Otherwise as you showed, thats the easy way to replace a wheel stud front or rear withou goin and buyin the tool to do it. Which essentially does the same thing but costs more.
No I didn't use a washer, but that is a great tip. Grease probably would probably keep the nut from being damaged. I wasn't planning on re-using the nut, so I did not take that precaution. Thanks for the tips!
Max


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post #5 of 7 Old 07-06-2015, 11:28 AM
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Stud replacement technique

This method works very well.
I used WD40 on the stud hole. Then a large, greased washer next to the hub surface. A spacer nut, with another greased washer, then the open-ended nut (replacing the lug for this task) to pull the stud into the hole.
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post #6 of 7 Old 07-06-2015, 11:40 AM
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Quote:
Originally Posted by AAK11 View Post
This method works very well.
I used WD40 on the stud hole. Then a large, greased washer next to the hub surface. A spacer nut, with another greased washer, then the open-ended nut (replacing the lug for this task) to pull the stud into the hole.
a lower grade spacer and a taper nut will work well too as seen in max's photos.

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post #7 of 7 Old 07-06-2015, 07:12 PM
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Thanks Max for the post. I know at least 2 studs I need to replace next week and your walk through was perfect timing. Us guys new to Jeeps appreciate these basic repair tips.
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