05-26-2008, 05:18 PM
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#1
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Master of my Domain
Join Date: Nov 2006
Location: Toledo, Ohio
Posts: 4,072
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Front Hub / Wheel Bearing
This is the start of the end all/be all thread on the front wheel bearing/hubs. If you have anything to contribute, please contribute below and I will add it into this first post.
Quote:
Removal & Installation
Front
To Remove:
Raise and safely support the vehicle.
NOTE:The front wheel bearings are not serviced separately. If the front wheel bearings are defective, the hub and bearing assembly must be replaced.
Lubricate the threads on the halfshaft with clean engine oil.
Remove or disconnect the following:
Front wheels
Halfshaft hub nut
Caliper from the steering knuckle
Brake rotor
Anti-lock Brake System (ABS) sensor from the backing plate
Hub and bearing assembly from the backing plate
Hub and bearing assembly from the halfshaft
Hub and bearing assembly
To Install:
Install or connect the following:
Hub and bearing assembly onto the halfshaft
Hub and bearing assembly to the backing plate. Tighten the 3 bolts alternately and evenly to 70 ft lbs (95 Nm).
ABS sensor
Brake rotor
Caliper on the steering knuckle.
**Halfshaft nut. Tighten it to 284 ft lbs (385 Nm) if the nut is black or 173 ft lbs (235 Nm) if the nut is gray.**
Front wheel. Tighten the nuts to 100 ft lbs (140 Nm).
Lower the vehicle.
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** please note
- "Grey nut" is referring to a nut that has a "shield" of sorts on the outside of it.The "black nut" is a whole flanged nut. 284 ft lbs is a ridiculous amount for these bearings period. This time around I only did 140 ft lbs. Take this under advisement, but I would NOT tighten these past 150 PERIOD...
Thread Sizes- Axle Spindle- 15/16"-14 thread- currently looking into this odd size?
- FHHCS (Flange Hex Head Cap Screw) the three that hold the hub on, M12 X 1.75 pitch X 50mm Lg. Fastenal Part No 0161846 - note 10Pcs.
*Measured with digital calipers- hey Im a Machinist by trade so numbers are good!
__________________
-Ryan
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06-30-2008, 12:44 PM
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#2
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GX Member
Join Date: Jun 2008
Location: regina, sk
Posts: 138
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Thanks for posting this, I have a 99 Gm service manual, and have read about the torque issues on the hub nut before, and I was wondering how they arrived at the massive figures early on.
I heard there are new nuts and they altered the torque values (?) but I am not sure if out new to swap out the nuts when servicing.
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06-30-2008, 12:50 PM
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#3
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636 whp
Join Date: Aug 2006
Location: AZ
Posts: 11,895
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that is a lot of torque
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06-30-2008, 02:40 PM
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#4
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Hot and Fluffy.
Join Date: Aug 2007
Location: Alberta, Canada
Posts: 1,699
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So my Car is totally F'ed. I have the Wheel bearing Whine. but When I turn there's no change. I know it's pretty unlikly that they will be both gone at the same time, but I know I'm going to have to replace both of them. Plus the hubs I would assume.
Anyone wanna give me a ballpark figure on what I'm looking at for the job? I lack the Tools requiredto do it myself.
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06-30-2008, 03:50 PM
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#5
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GX Member
Join Date: May 2008
Location: Newfoundland
Posts: 21
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I believe i have the same problem with mine.
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06-30-2008, 03:56 PM
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#6
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636 whp
Join Date: Aug 2006
Location: AZ
Posts: 11,895
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wheel bearing and hub are all one piece/together
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06-30-2008, 05:11 PM
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#7
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Gone
Join Date: Mar 2004
Location: Lockport Ny
Posts: 19,244
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Quote:
Originally Posted by meadus101
So my Car is totally F'ed. I have the Wheel bearing Whine. but When I turn there's no change. I know it's pretty unlikly that they will be both gone at the same time, but I know I'm going to have to replace both of them. Plus the hubs I would assume.
Anyone wanna give me a ballpark figure on what I'm looking at for the job? I lack the Tools requiredto do it myself.
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i paid 550 for both of mine.... like a 'tard. I didn't know they were so easy to do, until recently. You could probably rent the tools from a local parts store for less then $100, and they give you that back when you return them.
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06-30-2008, 06:59 PM
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#8
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Master of my Domain
Join Date: Nov 2006
Location: Toledo, Ohio
Posts: 4,072
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Before you replace the bearings loosen the nut and re torque them to see if it changes.
__________________
-Ryan
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07-01-2008, 09:16 AM
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#9
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GLS member
Join Date: Mar 2008
Location: Baltimore, MD USA
Posts: 5,529
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It might be helpful if people posted the mileage at which they changed their front wheel bearing/hubs. At 21,400 miles, I still have my original ones on my 1999 Alero and figure I have quite some time before I have to do this.
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07-01-2008, 12:20 PM
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#10
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Master of my Domain
Join Date: Nov 2006
Location: Toledo, Ohio
Posts: 4,072
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As far as I know mine were original. 125K I believe on my 99.
__________________
-Ryan
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07-01-2008, 12:29 PM
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#11
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Aleromod's most pointless thread starter
Join Date: Aug 2007
Location: Jersey (north and south are 2 diff. states)
Posts: 2,349
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im at 172k i have to replace mine (unknown history prior) im getting tired of the "christmas tree" lightshow year round
__________________
Quote:
Originally Posted by adam337
whats with all the useless threads lately?..
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New project 1992 460 big block ford notchback mustang
Goal - Mid 11s all motor.
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07-01-2008, 02:05 PM
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#12
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MINIac
Join Date: Oct 2005
Location: Brighton, MI
Posts: 1,030
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Parts are ~$100/ea at Murray's or Autozone (Murray's are cheaper, get the $100 if you're keeping it, the $80 if you're selling it).
I paid a local shop $75-ish to put one on for me.
First one went out around 40k, maybe, then every so often after that. I replaced 4 or 5 total in the 120k I owned it.
__________________
Moved on to smaller and better things.
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07-01-2008, 02:19 PM
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#13
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GL Member
Join Date: Feb 2008
Location: Crofton, MD
Posts: 839
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I can't say for sure the mileage when I replaced mine. I'm thinking in the 100k-125k mile range. I replaced them with a junkyard set, and they have lasted up til now (245k), but I bought new ones anyway since I'm completely overhauling.
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07-03-2008, 02:05 PM
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#14
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Hot and Fluffy.
Join Date: Aug 2007
Location: Alberta, Canada
Posts: 1,699
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Yea, I'm buying the better bearings up, and Having a Shop do it. It's on Daddy's Dime.
I lack the tools and time, or a decent environment to do it in, besides, I'd want ryan there with me with a live feed to tell me what to do as I'm doing it.
I'm really not confident. hahaha.
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07-13-2008, 02:29 PM
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#15
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GX Member
Join Date: Jun 2008
Location: regina, sk
Posts: 138
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How about using 140 ft pounds and a drop of medium threadlocker on the bigassnut? I assume there is a reason GM hates threadlocker since they hardly ever recommend it in the service manual.
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07-13-2008, 11:44 PM
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#16
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Moderator
Join Date: Nov 2004
Location: Long Grove, IL
Posts: 5,002
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usually those spindle lock nuts are locking (slightly oval shaped at the end).
__________________
Cliff Scott
2004 Alero GX w/sport pkg - Sold, living somewhere in WI now.
2011 Saab 9-5 Turbo4 M6
2004 Corvette Convertible M6
1994 Chevy Beretta - Quad4/M5
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07-14-2008, 01:04 PM
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#17
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Master of my Domain
Join Date: Nov 2006
Location: Toledo, Ohio
Posts: 4,072
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The spindle nuts on mine are like 4-6 small plates with a steel case around them... They are self locking.
Loctite is not necessary at all.
I havent found time to tear into my extra bearing yet, but 140 ft lbs has to be to much... Thats enough to crush bearings...
__________________
-Ryan
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08-25-2008, 07:23 PM
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#18
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GLS member
Join Date: Jun 2008
Location: FL
Posts: 3,723
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bumping so I can find this thread later this week.
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08-26-2008, 07:58 PM
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#19
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GLS member
Join Date: Jun 2008
Location: FL
Posts: 3,723
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Thanks for this tutorial. Got one hub for $89 at advance, and busted it out this afternoon, took me about an hour using a complete garage with lift and air tools. One thing I'd like to add if it hasn't been said already, is that you should unbolt the tie rod so you can get better access to the 3 hub bolts on the backside.
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12-29-2008, 08:16 PM
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#20
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GL Member
Join Date: Jul 2008
Location: Butler, PA
Posts: 633
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Just paid $127 for a hub assy from AutoZone. My car has just over 77,650 miles on it, both original bearings on the front. My front Driver's side is the one that went. I figure by all the different torque specs that everyone has thrown around on this forum that I should be good somewhere between 130ft-lb and 150ft-lb for the axle nut.
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*TOTALED* - 2000 Olds Alero Sedan - 3.4L 3400 V6 - WAI - Sony Head Unit -
NEW RIDE - 2005 Buick LaCrosse - 3.8L 3800 Series III V6 - WAI - Muffler/Resonator removed -
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