Yoshi's wheel bearing guide

From the tranny down to wheel bearings.
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Yoshi's wheel bearing guide

Postby Yoshi » Tue Jun 02, 2009 11:54 pm

So by popular demand, here is how to do your wheel bearings!

Note of special tools:
Pelican parts bearing puller - $300 new
Pusher - $25

Other tools needed (but probably not all):
8mm allen socket
17mm socket AND open ended wrench
30mm Socket
Breaker bar
big fucking adjustable wrench
19mm wrench for shock
Big FUCKING hammer
Mini allen for the brake rotor
flat tip screw driver

Ok lets get started

Here is our guinea pig car. with fresh and happy bearings.
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The pelican parts bearing puller. I doubt you can do this job without it

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Step 1
Take off the wheel and remove inner clip

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Step 2
Remove axle from diff using the 8mm allen socket. If your ebrake is weak, you might want to keep 1 or 2 bolts in so the wheel won't move when you are getting the axle nut off.
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Step 3
I used a 30mm socket to get the axle nut off but I think you can use a 31mm or maybe even 30. I have no idea how I don't strip the axle nuts >_<
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Step 4
Remove the axle. Method 1 is to heat and smash the axle out with a hammer and screw driver.
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Method two is to use a pusher tool to press out the axle

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Step 5
Remove the wheel hub aka drive flange. Yes I left the brake shoes on. You really should take them off but I was very lazy. Don't be lazy. I warped the dust shielding behind it and killed my brake shoes. I had to bend back and replace everything. Remove the brake shoes!
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Note the outer race of the bearing came off with the hub. I don't know how to get it off and wound up fucking up the hub :(
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Step 6
Remove the C clip

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Step 7
Remove the bearing

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comparison of old and new
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Step 8
Press in new bearing after greasing the fuck out of it. A good idea is to use the old bearing to help press in the new bearing. The Pelican kit doesn't have a cap that covers exactly the bearing and no more. The large one will get the bearing only until the opening of the hub (not enough to put the C clip in). The smaller one will only press on the inner race and separate it. Ask me how I know.
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Step 9
New C clip!

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Step 10
Press in wheel hub. Use lots of lube and maybe lightly sand down the surfaces of the hub so it will slide in better. Remember not to press it too far in or the inner race will separate and you will have to start all over again. Use a backing plate supplied to hold the other side of the inner race while you press in the wheel hub. Otherwise, youll press the hub into one inner race and press out the other inner race. Allegedly, as long as nothing is damaged inside if you do this, you can press it back in and the bearing will be fine.

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Here is how I did it wrong. I had the cup attachment on the back and the second inner race pressed out.

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This picture is the wrong way to do it. note the cup attachment killing the other inner race.


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If you use the flat backing plate, the inner race on the other side won't press out.

Step 11
Put back in the axle. It's ok for the axle and hub to wobble around after you do this. It is normal (from a bmw tech I talked to) for the hub to wobble around a little bit when the axle is in but not tightened down. Once you put the axle nut and torque it down (anyone got the torque spec?), the hub should no longer wobble around.

Step 12
put everything else back in (brakes, lines, shock, wheel, etc. Do the wobble check on the wheel to make sure the bearing wasn't damaged in the install process. Then drive!
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Status: HG repair. 488wtq though!
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Re: Yoshi's wheel bearing guide

Postby M20_fever » Wed Jun 03, 2009 12:06 am

nice write up, how long did it take you?
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Re: Yoshi's wheel bearing guide

Postby Yoshi » Wed Jun 03, 2009 12:30 am

hour and a half? Not long at all.
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Status: HG repair. 488wtq though!
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Re: Yoshi's wheel bearing guide

Postby ten2doyle102 » Wed Jun 03, 2009 1:53 am

very nice!!! I think I have to do this on my IX soon.....not looking forward to it cause its the fronts.
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Re: Yoshi's wheel bearing guide

Postby M20_fever » Wed Jun 03, 2009 5:36 am

are the fronts on an IX the same as the rear on normal e30s?
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Re: Yoshi's wheel bearing guide

Postby EqualizedCustoms » Wed Jun 03, 2009 9:59 am

i need to do this or i might just replace the whole trailing arm. good job yoshi
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Re: Yoshi's wheel bearing guide

Postby ten2doyle102 » Wed Jun 03, 2009 11:14 am

M20_fever wrote:are the fronts on an IX the same as the rear on normal e30s?



They are pretty close. I just get worried abotu the inner race part....the front hubs are ALOT more expensive if you mess it up!
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Re: Yoshi's wheel bearing guide

Postby Yoshi » Wed Jun 03, 2009 1:12 pm

I'm going to try to salvage my wheel hub and not get a new one. By my calcs, as long as it stays in, its fine.

I imagine the IX fronts will be very similar to the rear. I recommend the gear puller/pusher tool thing to get the axles out. It made very short work of the axles.
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Status: HG repair. 488wtq though!
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Re: Yoshi's wheel bearing guide

Postby ten2doyle102 » Wed Jun 03, 2009 1:19 pm

My axle just popped right out when I did the axle boot yesterday. Just had to take a pin drift and a hammer and they came right out! :)
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Re: Yoshi's wheel bearing guide

Postby Yoshi » Wed Jun 03, 2009 1:34 pm

well fuckin lucky you@! I smashed at mine with a hammer for about 10 minutes before I thought about the gear puller.
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Status: HG repair. 488wtq though!
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Re: Yoshi's wheel bearing guide

Postby ten2doyle102 » Wed Jun 03, 2009 1:37 pm

:mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :wink: :wink: :wink: :wink:
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Re: Yoshi's wheel bearing guide

Postby Yoshi » Thu Jun 04, 2009 1:35 am

updated with tips so you don't fuck up your bearings like me :( $70 down the tubes.
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Status: HG repair. 488wtq though!
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Re: Yoshi's wheel bearing guide

Postby ten2doyle102 » Thu Jun 04, 2009 2:46 am

I like hints! :)
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Re: Yoshi's wheel bearing guide

Postby Yoshi » Tue Jun 09, 2009 12:55 am

Ok so it turns out one of the bearings I thought I broke wasn't broken. I didn't think the inner races were supposed to have any play. Apparently they have TONS of play or I keep getting defects lol. I did manage to break one pressing in the hub >_< I'll draw a diagram later to show how I fucked up and how you can avoid doing the same.

But I did get a good bearing in. Surprisingly, there is play when the axle is half way in and you wobble it around. But when you bolt down the axle, the play is gone. I put a wheel on temporarily and tried to wobble it around and got none. MAYBE a tiny nut hair but we'll find out. I still need to put the rotor and brake back on and road test it. I'm also going to do the other side tomorrow. *sigh* this tutorial was much needed. I hate being the first and fucking up.
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Status: HG repair. 488wtq though!
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Re: Yoshi's wheel bearing guide

Postby M20_fever » Tue Jun 09, 2009 4:50 am

I love learning from other peoples mistakes, thanks for taking one for the team. ;)
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