How to Replace Front Wheel Bearings - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 14 (permalink) Old 02-21-2013, 08:10 PM Thread Starter
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How to Replace Front Wheel Bearings

Here are the tools your going to need (I didn't list the pipe I used as leverage or the clamp to squeeze the caliper piston back in)
Tire tool and socket (to get your wheel off)
New Bearing
Big Hammer
3/8 Rachet
1/2 Rachet
6" Extension for 3/8 rachet
3" Extension for 3/8 rachet
3" Extension for 1/2 rachet
30mm 1/2 drive socket
3 Jaw puller (this is a free rental from autozone)
Big Box end Wrench for Leverage on the 3/8 rachet



Chalk the rear tire up



Jack the car up



Take your caliper off (2 14mm bolts) and tie it up




Take off the bracket that holds the caliper (2 15mm bolts)




Pull off the rotor



Take the 1/2 rachet and 30mm socket (and a pipe to fit over the rachet for leverage) and take out the Center bolt holding the hub on



Take off the 3 15mm bolts from the back of the hub, this is where you'll use the 3" and 6" extension for the 3/8 rachet





Now position the 3 Jaw puller on the hub, pushing against the end of the axle. Use a rachet or impact to push the axle out of the hub



Now take the Big hammer and tap or beat the Hub/Bearing out (mine came out with a couple of taps, some of you won't be that lucky)



OUT!!!



New bearing against the old one, notice how burnt up the old one was




Reverse these steps to install the New bearing, make sure this tab is put back in the same spot it came from.
Wheel Bearing/Hub Assembly Mounting Bolts
115 Nm
85 lb ft

Important: DO NOT air tools to tighten the wheel drive shaft nut. Use a torque wrench only.

Using a torque wrench and the appropriate size socket , tighten the wheel drive shaft nut .
Notice: Refer to Fastener Notice in the Preface section.

Tighten the wheel drive nut .

Tighten the wheel drive shaft nut to 210 Nm (155 lb ft).







Before you throw away the old bearing knock out the studs for future use




And thats it

Last edited by Coby7; 02-22-2013 at 08:31 AM.
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post #2 of 14 (permalink) Old 02-21-2013, 09:12 PM
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Nice write up! Will be useful for those asking and wondering. As for me, now I know what a wheel bearing is! Learning everyday!

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post #3 of 14 (permalink) Old 02-22-2013, 04:22 AM
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Nice write up
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post #4 of 14 (permalink) Old 02-22-2013, 06:51 AM Thread Starter
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Thanks guys, coby, can we make this a sticky?
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post #5 of 14 (permalink) Old 02-22-2013, 06:57 AM
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Quote:
Originally Posted by Jmesl8er View Post
And thats it
What torque values did you use for the center nut and the 3 holding the bearing assembly?

---------- Post added at 10:57 AM ---------- Previous post was at 10:53 AM ----------

Quote:
Originally Posted by Jmesl8er View Post
Thanks guys, coby, can we make this a sticky?
I will add it to the list if you refine your thread. I think you forgot to mention that you have to clean the alluminum alloy knuckle before installing new bearing. Don't be shy to edit your thread with the missing info. When I think it's complete I will stick it for sure.

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post #6 of 14 (permalink) Old 02-22-2013, 07:03 AM Thread Starter
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The center nut is just tight enough to have a little bit of drag when you turn the bearing. The 3 back bolts are just tight. There big enough not to break if you crank down on them, couldnt find a torque spec. I assumed everyone would clean everything off before reassembly. I used brake cleaner
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post #7 of 14 (permalink) Old 02-22-2013, 08:17 AM
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Well, you know greenhorns are going to be reading your "how to" so you can't leave too much out for guessing. I'm willing to help you if you want.

---------- Post added at 11:11 AM ---------- Previous post was at 11:06 AM ----------

Wheel Bearing/Hub Assembly Mounting Bolts
115 Nm
85 lb ft

---------- Post added at 12:17 PM ---------- Previous post was at 11:11 AM ----------

Just added it to the how to list but feel free to improve on the amount of info. This thread is your baby take care of it.

https://www.yourcobalt.com/forums/ins...tml#post594079

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post #8 of 14 (permalink) Old 02-22-2013, 08:58 AM
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I seem to recall reading another thread about this subject. How do you know your wheel bearing has gone bad?

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post #9 of 14 (permalink) Old 02-22-2013, 11:34 AM Thread Starter
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I seem to recall reading another thread about this subject. How do you know your wheel bearing has gone bad?
Ive got a vid on how to check. Thanks coby
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post #10 of 14 (permalink) Old 02-22-2013, 11:57 AM
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That's service!

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