Wheel Studs Falling Out Of Hub Bearing - JeepForum.com
 
LinkBack Thread Tools
post #1 of 15 Old 03-19-2019, 05:48 AM Thread Starter
jeepjeepster
Registered User
 
Join Date: Dec 2004
Posts: 3,982
Wheel Studs Falling Out Of Hub Bearing

My 94 recently started making a noise similar to a bad wheel bearing. The Jeep has 264,000mi and has the original wheel bearings so it wasn't a surprise to me. Going straight around 60mph I could hear the grumbling, turning left made it worse, turning right made it go away.... So I naturally start looking at the right front.

Go to take the wheel off and several wheel studs loosen very easily with 1 being hardly finger tight. I always torque the lugs with a torque wrench to 100 lb ft, no one else has touched the Jeep. Ill have to look but I think the last time I rotated the tires was back in the fall when I undercoated the Jeep. Around 5,000mi ago.

The loose lug keeps spinning so I think its just the chrome cap trying to pop off and not a loose lug. Grab the impact and go to town on the lug; it spins indefinitely. After removing the 4 lugs I push the wheel sideways and put the impact on the loose lug, comes right off... Great, Ive been grinding the lug on the bevel of the rims lug hole... Hopefully I didn't damage the rim, its certainly reamed out some.

After I get the wheel off the wheel stud that had the loose lug just falls out. 3 more easily pop out when I tapped on them with the lug wrench. Only 1 was still tight in the hub flange. Has anyone ever seen this happen? The hub bearing doesnt seem bad but it does sound a little dry, so Ive ordered a new SKF from rock auto. $77, which seems higher than I recall for a wheel hub. I enjoy seeing just how long stuff lasts so I hate to replace it, but I wouldn't trust new wheel studs since these were all loose.








1994 ZJ-I6 w/270,000 mi
1998 ZJ 5.9 w/66,000 mi Slate Black
2004 KJ w/108,000 mi
jeepjeepster is offline  
Sponsored Links
Advertisement
 
post #2 of 15 Old 03-19-2019, 07:42 AM
variable
Registered User
 
variable's Avatar
1993 ZJ 
 
Join Date: Sep 2003
Location: San Jose
Posts: 942
Yikes! Good thing you didn't find that after the fact! 264k on the original bearings is nuts. Then again, I'm not very nice to cars

93 ZJ V8 5.2 - K&N FIPK, lots of headaches
variable is offline  
post #3 of 15 Old 03-19-2019, 07:52 AM
Xpress
Registered User
 
Xpress's Avatar
1996 ZJ 
 
Join Date: Dec 2010
Location: Yuma
Posts: 6,113
Garage
You got your moneys worth out of that hub, I'd be replacing both sides if I were you. $70-$100 is right about what the hubs go for these days.

'96 ZJ 5.2L, IRO 3.5" lift, KOR radiator support, MVF steering brace, IronMan 1 Ton
Xpress is offline  
 
post #4 of 15 Old 03-19-2019, 08:23 AM
GOLDWING
Registered User
 
GOLDWING's Avatar
1998 ZJ 
 
Join Date: Nov 2015
Location: eau claire
Posts: 2,703
Quote:
Originally Posted by jeepjeepster View Post
My 94 recently started making a noise similar to a bad wheel bearing. The Jeep has 264,000mi and has the original wheel bearings so it wasn't a surprise to me. Going straight around 60mph I could hear the grumbling, turning left made it worse, turning right made it go away.... So I naturally start looking at the right front.

Go to take the wheel off and several wheel studs loosen very easily with 1 being hardly finger tight. I always torque the lugs with a torque wrench to 100 lb ft, no one else has touched the Jeep. Ill have to look but I think the last time I rotated the tires was back in the fall when I undercoated the Jeep. Around 5,000mi ago.

The loose lug keeps spinning so I think its just the chrome cap trying to pop off and not a loose lug. Grab the impact and go to town on the lug; it spins indefinitely. After removing the 4 lugs I push the wheel sideways and put the impact on the loose lug, comes right off... Great, Ive been grinding the lug on the bevel of the rims lug hole... Hopefully I didn't damage the rim, its certainly reamed out some.

After I get the wheel off the wheel stud that had the loose lug just falls out. 3 more easily pop out when I tapped on them with the lug wrench. Only 1 was still tight in the hub flange. Has anyone ever seen this happen? The hub bearing doesnt seem bad but it does sound a little dry, so Ive ordered a new SKF from rock auto. $77, which seems higher than I recall for a wheel hub. I enjoy seeing just how long stuff lasts so I hate to replace it, but I wouldn't trust new wheel studs since these were all loose.





There will never be an easier time to do axle shafts than when the hub bearing assy is out.

GW

"The Dude Abides"

"Your axles are going to turn into spaghetti noodles."
Polka Power 1/3/2021
GOLDWING is offline  
post #5 of 15 Old 03-19-2019, 08:32 AM
variable
Registered User
 
variable's Avatar
1993 ZJ 
 
Join Date: Sep 2003
Location: San Jose
Posts: 942
Quote:
Originally Posted by GOLDWING View Post
There will never be an easier time to do axle shafts than when the hub bearing assy is out.

GW
True! Incidentally, I'd poke around on here/shop around for quality wheel bearings/hubs, I bought a set from O'Reilly's (who I usually have reasonable luck with) and within a month I had to replace them and the CV axle shaft.. a year later and I had to replace the hub again. Ordered my next one off Amazon (Timken), no issues (though I think my lugs/studs might be too short for the wheels I have.. thats another matter)

93 ZJ V8 5.2 - K&N FIPK, lots of headaches
variable is offline  
post #6 of 15 Old 03-19-2019, 09:58 AM Thread Starter
jeepjeepster
Registered User
 
Join Date: Dec 2004
Posts: 3,982
The Jeep hardly makes any long trips anymore so Ill wait and see how long the other side lasts.

On the axle shafts, I just replaced the boots not long ago. I've had the front end apart so many times, I can have the axle shaft out in under 30 minutes.

Ive gotten timken in the past but I wanted to try SKF this go around. Haven't had any issues with timken but I've read they sold out. No idea if its true.

1994 ZJ-I6 w/270,000 mi
1998 ZJ 5.9 w/66,000 mi Slate Black
2004 KJ w/108,000 mi
jeepjeepster is offline  
post #7 of 15 Old 03-19-2019, 05:43 PM
V8GCZJ
Registered User
 
Join Date: Sep 2018
Posts: 741
Quote:
Haven't had any issues with timken but I've read they sold out.

They didn't sell out they just moved a production plant overseas. I just bought hub bearing for another vehicle and it was made in the USA! If you look on the box it has a code or something where the part originated.
V8GCZJ is offline  
post #8 of 15 Old 03-21-2019, 10:38 AM
OverlandZJ
Registered User
1994 ZJ 
 
Join Date: Oct 2012
Location: Bristol, Pa
Posts: 1,112
I'v got 238K on a 95 with original hubs, it'll get new Timken's and axleshaft ujoints this summer.

Biggest expense since 42K was a new trans at 150K.
OverlandZJ is offline  
post #9 of 15 Old 03-22-2019, 06:08 AM Thread Starter
jeepjeepster
Registered User
 
Join Date: Dec 2004
Posts: 3,982
I guess the fuel pump is the biggest expense this Jeep has had...

Lady at work has a ~2015 Jeep Cherokee that has the electronic parking brake. I've thought this was a bad idea from the get go but I understand some people simply aren't strong enough to pull/push the parking brake. I guess, for whatever reason, the parking brake module can get wet on those Jeeps and naturally it goes bad. The dealer replaced the module and the gasket around the tail gate b/c they thought thats what was causing the leak. She got a bill for $700.... To fix the parking brake.... Got to thinking, I'm almost positive that all of the issues (not including maintenance) added up on my 94 ZJ with 264,000mi wouldn't be much higher than that... If she had something big and important fixed it would be different, but $700 for a parking brake is insane.

1994 ZJ-I6 w/270,000 mi
1998 ZJ 5.9 w/66,000 mi Slate Black
2004 KJ w/108,000 mi
jeepjeepster is offline  
post #10 of 15 Old 06-15-2021, 08:46 PM
RedRiverT
Registered User
1997 ZJ 
 
Join Date: Nov 2014
Posts: 748
Old thread resurrection warning!! Front hub thread.

Quote:
Originally Posted by jeepjeepster View Post


267,000 or more on mine, front bearing(s) starting to sound mad at me.

What size is that nut, 1-7/16" or 36mm (or will either work since they're pretty close)?

I read in another thread 175 ft-lb, on the shaft nut surely, and 75 ft-lb on the 3 that hold the hub to the knuckle. Is that right for a '97 2WD?
RedRiverT is offline  
post #11 of 15 Old 06-16-2021, 02:22 PM Thread Starter
jeepjeepster
Registered User
 
Join Date: Dec 2004
Posts: 3,982
I think I always use a 36mm, cant remember for sure though.

Those torque values sound correct. I know when I had a torque wrench that maxed out at 150 lb-ft, I would max it out then use a breaker bar to tighten it a little more.

1994 ZJ-I6 w/270,000 mi
1998 ZJ 5.9 w/66,000 mi Slate Black
2004 KJ w/108,000 mi
jeepjeepster is offline  
post #12 of 15 Old 06-16-2021, 03:08 PM
Mr. Puddles
Registered User
1996 ZJ 
 
Join Date: Mar 2018
Location: Little Elm
Posts: 922
Garage
Quote:
Originally Posted by RedRiverT View Post
267,000 or more on mine, front bearing(s) starting to sound mad at me.

What size is that nut, 1-7/16" or 36mm (or will either work since they're pretty close)?

I read in another thread 175 ft-lb, on the shaft nut surely, and 75 ft-lb on the 3 that hold the hub to the knuckle. Is that right for a '97 2WD?
Ill look in the FSM and see if it lists them

Follow the build!

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


2002 Dakota aka Winnie aka Mad Max
1996 Grand Cherokee aka Puddles aka Pikey Life
Quote:
Originally Posted by kg6mov View Post
The 4.0 is dumb old tractor motor, itís too stupid to know itís supposed to die.
Mr. Puddles is offline  
post #13 of 15 Old 06-16-2021, 06:30 PM
zjosh93
Registered User
1993 ZJ 
 
Join Date: Aug 2010
Location: Austin
Posts: 3,256
I picked up one of these Tekton 25-250 ft/lb torque wrenchs in 2017. Well worth it for those times you need more than 150 ft/lbs.

https://www.amazon.com/TEKTON-24340-.../dp/B00C5ZL1NS

Torque on the axle or stub shaft sets the preload on the bearings and contributes to bearing longevity.

Also, FWIW my 93 has over 300,000 on the original front hubs. I imagine 2WD is easier on the hubs.
zjosh93 is offline  
post #14 of 15 Old 06-21-2021, 08:32 AM
Mr. Puddles
Registered User
1996 ZJ 
 
Join Date: Mar 2018
Location: Little Elm
Posts: 922
Garage
Quote:
Originally Posted by RedRiverT View Post
267,000 or more on mine, front bearing(s) starting to sound mad at me.

What size is that nut, 1-7/16" or 36mm (or will either work since they're pretty close)?

I read in another thread 175 ft-lb, on the shaft nut surely, and 75 ft-lb on the 3 that hold the hub to the knuckle. Is that right for a '97 2WD?

Per the 96 FSM:

"Install the hub washer and nut. Tighten hub nut to 237 Nm (175 ft. lbs) torque. Install the nut retainer and a new cotter pin."

Follow the build!

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


2002 Dakota aka Winnie aka Mad Max
1996 Grand Cherokee aka Puddles aka Pikey Life
Quote:
Originally Posted by kg6mov View Post
The 4.0 is dumb old tractor motor, itís too stupid to know itís supposed to die.
Mr. Puddles is offline  
post #15 of 15 Old 06-21-2021, 04:53 PM
RedRiverT
Registered User
1997 ZJ 
 
Join Date: Nov 2014
Posts: 748
Thanks.

And I used a 36mm, although the CalHawk brand I bought was looser than I would think appropriate. A 35mm was just barely too small, and a 1-3/8" is just a tiny bit smaller than that. 1-7/16" is larger than 36mm, so the 36 must be it.
RedRiverT is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Rear Wheel bearing play / clunk lemioux12 WJ Grand Cherokee Forum 3 05-25-2019 12:27 PM
Front Wheel Bearing Hub tvh2015 KJ Liberty Forum 10 10-18-2018 05:42 AM
Wheel bearing hub jackbrit3 YJ Wrangler Technical Forum 7 10-17-2018 05:10 PM
Can you put old wheel bearing sensor screen on a new wheel bearing hub? Football47 KJ Liberty Forum 0 03-30-2018 02:31 PM
TRQ Wheel Bearing and Hub Raffish WK Grand Cherokee & XK Commander Forum 5 02-03-2018 10:07 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome