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Old 12-30-2005, 09:53 PM   #1
Scooby Guru
Member#: 52324
Join Date: Jan 2004
Chapter/Region: NESIC
Location: Pelham, NH
2011 WRX LTD (FS)
1990 T30 miata

Default Urgent! wheel bearing help needed!

I am in the midst of doing wheel bearings and have hit a brick wall. Car is apart, parts are bought, and I can't get the old ones out! Who can lend me some info? Any subaru techs? Anyone else who's replaced them before? I have the shop manual so I know the procedure, but I can't get the old bearing to budge.
I've soaked it in PB Blaster. we've tried hitting it with a hammer. we even tried putting the wheel back on and letting the weight of the car try to break the bearing free.

can I use heat? will mapp gas work? special tool? come on brains of nasioc. show me what you got!
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Old 12-30-2005, 09:56 PM   #2
Scooby Specialist
Member#: 83637
Join Date: Mar 2005
Chapter/Region: MAIC
Location: Central PA
And "Infamous Car #2"


There is a post on the site called "wheel bearing replacement guru guide" or something similar to it, he used a hydrolic press if I am correct. Search "Wheel bearing + guru" and you should find it.

Good Luck. I will be doing the same thing over summer.
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Old 12-31-2005, 08:46 AM   #3
Scooby Guru
Member#: 52324
Join Date: Jan 2004
Chapter/Region: NESIC
Location: Pelham, NH
2011 WRX LTD (FS)
1990 T30 miata


I think I saw that how-to. my legacy has a different rear suspension setup so the task is a bit different. The bearing is really jammed onto the backing plate. perhaps 5 years of salty winters have welded it together.
maybe a night of soaking with PB helped.
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Old 12-31-2005, 10:43 AM   #4
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Member#: 39070
Join Date: Jun 2003
Chapter/Region: TXIC
Location: Strongbadia
GTF off my lawn!


I've done wheel bearings on an STi (my buddy's '04), so just going by what you're indicating... If you're talking about the 'inner' bearing that is pressed onto the axle 'stub' (for lack of the correct term that escapes me), then you need a bearing separator and a press to get it out.

I'm talking about the 'inner' piece of the hub + knuckle assembly... it carries the lug-flange, the half-shaft slips into it. -That- inner bearing can most easily be pressed off. It can also be 'pulled off' if you have a slide-hammer w/3-finger claw attachment and a lot of elbow grease. You can try a torch, but I doubt it'll do anything but make a lot of smoke.

Here's a link to a bearing separator:


You put this thing 'around' the shaft, behind the bearing, then set it against the press-table (such that the separator is flat against the press-plates and the hub/shaft is pointing 'up'). Then you press out the 'hub' part down through the bearing. It'll be obvious when you see it. If you get the harbor-freight one, they have two versions... get the 'large' one. The small one is too small it seems (I got the large one, worked like a champ).

If you don't have access to a press, well, like I said, a slide-hammer can be used (we did this on my friend's car before finding a bearing separator).

If you're not talking about that particular bearing, then I don't know what you're talking about b/c it's the only one that's pressed on (once you separate the inner hub from the knuckle) on a WRX anyway

BTW: getting the race out also requires a press if it's anything like a WRX.
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