R3VLimited Forums

Go Back   R3VLimited Forums > E30 Technical Forums > E30 FAQ and DIY

Reply
 
Thread Tools Search this Thread
Old 02-18-2010, 12:33 AM   #1
bejbis
E30 Addict
 
bejbis's Avatar
 
Join Date: Dec 2008
Location: Mobile, AL
Posts: 595
Send a message via AIM to bejbis
Front wheel bearing replacement.

e30 Front wheel bearing replacement.

Today I had to do a wheel bearing replacement on my 89 325i. This guide should be 100% the same through any model year e30, and probably a few other models as well. I saw quite a few rear bearing replacement DIY's but no fronts, so I took a few pictures along the way.

-Diagnosis

Most wheel bearings will present themselves in an audible noise when they start to fail. This will sound like a constant rumble or groan when driving, and get louder with increased speed. The noise usually lessens when you take load off of the bearing that is making the noise, a gradual turn should change the pitch or intensity. A left hand turn takes the load off of the drivers side wheel, right turn takes it off of the passenger. The noise can also be accompanied by a noticeable vibration. You can sometimes feel a bad wheel bearing by jacking the car up and rotating the wheel, but you will hear/feel it while driving long before this is possible.

-Tools needed

- Allens
- 19mm socket/wrench
- 17mm socket for lugs
- 10mm socket/wrench
- Hammer
- Flathead screwdriver
- Small bearing 2/3 jaw bearing puller. Autozone has them for rent.
- 36mm thin wall socket. The OEM brand that the auto parts stores will not work. Sears has them for 9$.

-Preparation (10 min)

To get started you will need to jack the offending wheel in the air and support the car with a jack-stand for safety. You will also need to remove the wheel.

-Replacement (30 min)

1. Remove the brake caliper by loosing the two 19mm hex bolts holding the caliper to the strut base. Support the brake caliper so the weight of the caliper is not being hung by the brake line. I usually stick the wheel under the car and place the caliper on the tire. (Picture #1)

2. Remove the allen bolt on the brake rotor. The rotor will fall off when you remove this, be sure not to let it fall on your leg. (Picture #1)

3. Remove the bearing cap in the center of the hub. Use the flathead screwdriver and the hammer to gently tap the cap out of its hole. When this is off, you will see the hub nut. The nut has part of it bent into a relief in the axle to act as a lock. Unbend the nut with the screwdriver and hammer combo. (Picture #2)

4. Remove the 36mm nut in the center of the hub. I used a 3ft breaker bar. Use what you have, it should not require a impact. (Picture #2)

5. (Optional) Remove the two 10mm hex bolts that secures the brake dust plate onto the hub. I only removed this for easier access and to clean things.

6. Use the bearing puller to pull the hub off of the axle. I had part of my inner bearing race separate from the hub. If this happens You will have to bend the metal inner shield to get your puller onto the race. I didn't have to bend it much and was able to straighten it back out once the race was off. (Picture #3)

7. (Optional) My hub came without the ABS tooth ring on the new hub. This made it mandatory for me to take my ABS ring off of my old bearing and put it on my new one. I used the puller to take it off, and put it on the new one with a vice using it like a press. Make sure the solid part of the ring is towards the inside of the new hub. (Picture #4)

8. Reinstall everything opposite of removal. To press my hub back on the axle, it required nothing more than pushing it as far as I could with my hands, and kicking it with my foot the rest of the way. I only kicked it until I was able to get the axle nut on and tighten the nut. There is probably a torque setting on the axle nut. I just tightened mine until the tab lined up with the relief in the axle, and the nut was tight. Make sure you re-bend the tab on the axle nut into the relief on the axle.


-Pictures

#1


#2


#3


#4
__________________
-Dan
bejbis is offline   Reply With Quote
Old 10-09-2010, 01:00 PM   #2
thedeal
Mod Crazy
 
thedeal's Avatar
 
Join Date: Mar 2009
Location: Everett, Wa
Posts: 643
this write up kind of scares me
__________________



thedeal is offline   Reply With Quote
Old 10-09-2010, 03:47 PM   #3
Cook
Member
 
Join Date: Oct 2010
Location: Devon, England
Posts: 94
The hub nut should be torqued to 290nm (did the job myself today )
__________________
Cook is offline   Reply With Quote
Old 02-10-2011, 10:41 PM   #4
jintermont
Mod Crazy
 
jintermont's Avatar
 
Join Date: Sep 2008
Location: albuquerque NM
Posts: 601
How much of a pita is this ?? I think mine is on it's way out. It makes a sound kind of like a train derailing but only at certain speeds. Also there is a slight knocking sound at certain speeds too ??
jintermont is offline   Reply With Quote
Old 02-11-2011, 11:01 AM   #5
Ceeker
R3VLimited
 
Ceeker's Avatar
 
Join Date: Sep 2009
Location: Toronto
Posts: 2,730
Quote:
Originally Posted by jintermont View Post
How much of a pita is this ?? I think mine is on it's way out. It makes a sound kind of like a train derailing but only at certain speeds. Also there is a slight knocking sound at certain speeds too ??
Take a read a few posts up to see what is required.
__________________
Ceeker is offline   Reply With Quote
Old 02-11-2011, 11:11 AM   #6
EN318isPDX
R3V Elite
 
EN318isPDX's Avatar
 
Join Date: Oct 2007
Location: Hillsburrito Oregon E30: MY17 Series.Yellow Daily MY15 Yamaha WR250R
Posts: 4,368
Quote:
Originally Posted by jintermont View Post
How much of a pita is this ?? I think mine is on it's way out. It makes a sound kind of like a train derailing but only at certain speeds. Also there is a slight knocking sound at certain speeds too ??
Alot easier than doin a rear bearing.
__________________
EN318isPDX is offline   Reply With Quote
Old 02-11-2011, 11:12 AM   #7
KenC
King of Kegstands
 
KenC's Avatar
 
Join Date: Oct 2003
Location: Portland
Posts: 14,396
Make sure to get a puller with a very thin threaded rod. If it's too large it will try to thread into your spindle.

We just replaced one, and the inner race was pretty seized to the spindle. We had to heat it red hot with an OA torch about six times and whack it with hammers to get it off with the puller.
__________________
Quote:
Originally Posted by Gruelius View Post
and i do not know what bugg brakes are.
KenC is offline   Reply With Quote
Old 02-11-2011, 11:33 AM   #8
Ceeker
R3VLimited
 
Ceeker's Avatar
 
Join Date: Sep 2009
Location: Toronto
Posts: 2,730
Quote:
Originally Posted by thedeal View Post
this write up kind of scares me
if that scares you then I'd definitely stay away from doing a blown head.LOL
__________________
Ceeker is offline   Reply With Quote
Old 02-11-2011, 04:16 PM   #9
Airplanecar8
Member
 
Join Date: Jul 2010
Location: AZ
Posts: 64
keep us posted. how did it change the ride overall?
Airplanecar8 is offline   Reply With Quote
Old 02-11-2011, 04:19 PM   #10
KenC
King of Kegstands
 
KenC's Avatar
 
Join Date: Oct 2003
Location: Portland
Posts: 14,396
Quote:
Originally Posted by Airplanecar8 View Post
keep us posted. how did it change the ride overall?
The ride doesn't change, you just don't have the drone from up front.
__________________
Quote:
Originally Posted by Gruelius View Post
and i do not know what bugg brakes are.
KenC is offline   Reply With Quote
Old 02-11-2011, 04:30 PM   #11
HarryPotter
No R3VLimiter
 
HarryPotter's Avatar
 
Join Date: Jan 2010
Location: A post-apocolyptic underground command center
Posts: 3,642
That's weird, my buddy got new bearings on the front of his Mark 4 jetta and the car drove like it just rolled off the lot.
__________________


"Its preparations are concealed, not published. Its mistakes are buried not headlined. Its dissenters are silenced, not praised. No expenditure is questioned, no rumor is printed, no secret is revealed."

John F. Kennedy
HarryPotter is offline   Reply With Quote
Old 02-19-2011, 10:17 PM   #12
element6
E30 Addict
 
element6's Avatar
 
Join Date: Dec 2010
Location: Miami Beach
Posts: 449
Quote:
Originally Posted by harrypotter View Post
that's weird, my buddy got new bearings on the front of his mark 4 jetta and the car drove like it just rolled off the lot.
mk4=fwd

did it to my gf's mk4 too.. and yeah, I know the difference in feeling. Wonder how my rear end would feel with new bearings
element6 is offline   Reply With Quote
Old 02-20-2011, 08:36 AM   #13
Anguz
E30 Fanatic
 
Anguz's Avatar
 
Join Date: Jun 2010
Location: Imperial Beach, CA
Posts: 1,394
im just gona buy new front hubs , they already come with new bearings
__________________
Anguz is offline   Reply With Quote
Old 02-20-2011, 09:48 AM   #14
StereoInstaller1
GAS
 
StereoInstaller1's Avatar
 
Join Date: Jul 2004
Location: Centralia, WA
Posts: 22,679
Quote:
Originally Posted by Anguz View Post
im just gona buy new front hubs , they already come with new bearings
Yeah...they are all come with bearings...when they said "change wheel bearing" they meant "change wheel bearing/hub assembly" and those pics show the process.

in fact, anyone know where to buy bearings WITHOUT the hubs? Post a link, don't give me any bullshit like 'they got them at autohauz", gimme a damn link AND a part number!
__________________

Closing SOON!
"LAST CHANCE FOR G.A.S." DEAL IS ON NOW

Luke AT germanaudiospecialties DOT com or text 425-761-6450, or for quickest answers, call me at the shop 360-669-0398

Thanks for 10 years of fun!
StereoInstaller1 is offline   Reply With Quote
Old 02-22-2011, 04:37 PM   #15
6erwebb
Advanced Member
 
Join Date: Oct 2010
Location: college grove, tn
Posts: 125
Alright, I hope this isn't a dumb question, but I don't have a bearing puller . . is there anything else I can use or is that like the end all be all tool??
__________________
DSC_0195 by Webster Burch, on Flickr
6erwebb is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -7. The time now is 11:06 PM.


Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright 2004 - 2020 R3VLimited LLC