BMW E36 325i Wheel Bearing/ Axle DIY FIX

This section holds all DIY's directly related to the e36 chassis. Everything from changing the oil on the m3 to swapping an s54 into your 325i.

BMW E36 325i Wheel Bearing/ Axle DIY FIX

Postby DEFKON99 » Sun Aug 15, 2010 12:45 pm

BMW E36 325.328.M3 Rear Wheel Bearing / Axle removal

This DIY was done on the Rear Drivers Side

This is simply for reference, we are not responsible for anything you to do your own car.


E36 325i Sedan
E36 328i Sedan
E36 M3 Sedan

Tools Needed
Sir Tools B90-BMW Wheel bearing kit
E-Torx 6 point # 12
½” & 3/8“Drive Ratchet
At least 15” Breaker Bar
Drive Extension (s) ½ & 3/8 Long / Short
30mm ½ 12 point Socket
15mm, 13mm, 12mm, 10mm 6-Point
6mm, 7mm Allen Socket
Common Screwdrivers
1. Safely Jack up the side of the car where the work will be performed, and chock the front wheels to keep the car from rolling.
a. Remove lug bolts (17mm) and remove the wheel.
2. Remove the screw which secures the rotor to the hub (6mm) Allen socket.
a. Remove the Caliper by loosening the 2 guide bolts with the (7mm) Allen socket.
b. Next remove the 2 (15mm) bolts holding the caliper bracket to the trailing arm.

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3. Bend the tabs back on the lock nut with a screwdriver a hammer may be required.
a. Use the emergency brake or put the car in gear. This will keep the axles from rotating.

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c. Now break out your (30mm ½) socket and breaker bar and remove the lock nut.
4. Removal of the hub should be pretty easy mine just fell out. If yours seems hard to pull out simply bust out the b90 tool and follow the provided documentation with the equipment.
a. Removal of the inner race which is seized onto the Hub can be an easy job with the right tool the Dremel with a metal cutoff wheel is a good choice. This will relieve the tension from the inner race. A vice will keep it from moving while doing this. Don’t cut into the HUB!

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c. After a nice cut go ahead and take a nice sized screwdriver and a hammer give it a whack or 2 it should snap and break free. Be sure to clean up your Hub with a good cleaner to remove any old grease.
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Axle removal: There are 2 ways of getting this out.
a. Removing the Rear trailing arm. By doing this you will most likely need to take it for realignment $$
b. Removing the exhaust. No $$ out of pocket maybe just a few %$^&* and a few more #$%^!!!
c. I went with the Exhaust removal route because cursing was free.
6. Support the underbelly of the exhaust with a jack or whatever useful. Remove the 4 exhaust bolts (13mm) and nuts (12mm). Now get the 2 (13mm) nuts at the hangers by the rear bumper and a few pulls should do it.

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7. Now loosen the rear sway bar work side only! The first picture (a) shows the removal of the clamp there will be a bolt and a nut both (13mm). The second photo (b) shows the removal of only 1 nut sized at (13mm). Move this out of the way by pulling down.
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8. Lock the axle by putting the car in gear or using the E-Brake.
a. Remove the 6 Torx bolts holding the axle to the differential using E-Torx (external Torx) socket size #12. Remove the axle now would be a good time to clean up the Axle and ABS ring.

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c. After cleaning the Axle now would be a good time to make sure everything lines up as it should inspect the Axle shaft from any cracks or bends same goes for the hub.
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Now’s a good time to remove your e- brake setup springs and all. Get the Sir Tools B90 tool set and begin to extract the bearing from the axle housing. Be sure to grease up the threads this will make the extraction go much smoother. I used a 27mm socket with breaker bar and a really big crescent wrench since I didn’t have a wrench big enough.
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10. Now is a good time to clean up the area if you choose to. I used a mild degreaser like fast orange and took a plastic bristled brush to it and rinsed off with water carful to dry off any water inside the bearing housing to prevent any rust while I let it dry off. Also take note I covered my calipers since I didn’t want to wet the pads which were still together with the caliper.
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11. Be sure to clean the ABS sensor and remove it before installing the bearing as it should be damaged by the plate used during installation.
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12. Get the new bearing out of the freezer and be sure not to pull out those inner races you do not want to do that it so be careful handing it.
a. Begin by slightly sliding in the bearing making sure its strait and not cockeyed look at it at all angles if need be.

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c. Now setup the Sir Tool kit again and be sure it’s all lined up strait and begin the installation while the bearing is still cold.
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f. Now install the retainer ring to keep the bearing in place Pn: 33411138648.
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13. Now you can reinstall the ABS Sensor (pictured in 11a) and torque it down hand tight will do.
14. Now it’s time to start putting everything back together.
a. Install the Axle by inserting the threaded side into the new Bearing!! Be sure not to knock out the inner race handle with care!! One in go ahead and get those E-Torx (12mm) and lock plates (pictured 8b) and torque down. Remember to put the car in car if you have to lock the Axles to keep them from rotating.
15. Now that the Axle is tight now is a good time to reconnect the sway bar and bolts (pictured 7a, 7b).
a. Hub installation time! Grab the Hub and make sure the area that will slide in is smooth apply a thin layer of grease this will help it install easier. Be sure to line up the hub with the bearing so it’s perfectly straight. You also want to line up the axle so that it is also straight.
b. You may need to jerk it slightly hell wiggling it in even works it should slide in nicely.
16. After installed throw on the (30mm) locking Nut torque this down to the manufactures specs in your manual

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17. Now the nut is torque down to spec. Grad a flathead screwdriver and knock the nut as pictured. This will keep it from coming loose.
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18. Now begin putting everything back together. I started with the E- Brake and Calipers and finally the exhaust.
19. Congrats on your install!
Rudy Bernal
AKA Defkon99
Defkon99@aim.com
Edge one looks like that stupid cube you buy to reset the brake pistons on doo doo cars -Proctor750

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Re: BMW E36 325i Wheel Bearing/ Axle DIY FIX

Postby DEFKON99 » Sun Sep 12, 2010 1:38 pm

Updated
Edge one looks like that stupid cube you buy to reset the brake pistons on doo doo cars -Proctor750

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Re: BMW E36 325i Wheel Bearing/ Axle DIY FIX

Postby e36guy » Fri Oct 22, 2010 7:17 am

nice write up mane!
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Re: BMW E36 325i Wheel Bearing/ Axle DIY FIX

Postby dantesboyz » Sun Nov 14, 2010 2:02 pm

gonna replace both myreal wheel bearings by removing the trailing arms in the next week or so... any heads up type suggestions?
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Re: BMW E36 325i Wheel Bearing/ Axle DIY FIX

Postby DEFKON99 » Sun Nov 14, 2010 3:51 pm

dantesboyz wrote:gonna replace both myreal wheel bearings by removing the trailing arms in the next week or so... any heads up type suggestions?



mark the position of the arm before removal so you can get a better idea of where it was lined up. By removing the arm you will have to get an alignment after $$$
Edge one looks like that stupid cube you buy to reset the brake pistons on doo doo cars -Proctor750

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Re: BMW E36 325i Wheel Bearing/ Axle DIY FIX

Postby dantesboyz » Wed Nov 17, 2010 5:20 pm

cool, i'll do that... at least it'll last me until i get the alignment. when i did my suspension overhaul in the spring i bought one of NTB's alignment for a year packages. i've had it done twice since then. benn using cambershims to get the front end right where i want it...
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Re: BMW E36 325i Wheel Bearing/ Axle DIY FIX

Postby DEFKON99 » Wed Nov 17, 2010 11:31 pm

dantesboyz wrote:cool, i'll do that... at least it'll last me until i get the alignment. when i did my suspension overhaul in the spring i bought one of NTB's alignment for a year packages. i've had it done twice since then. benn using cambershims to get the front end right where i want it...



cant go wrong with the year package!! let us know how it turns out!
Edge one looks like that stupid cube you buy to reset the brake pistons on doo doo cars -Proctor750

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Re: BMW E36 325i Wheel Bearing/ Axle DIY FIX

Postby Caligula » Thu Nov 18, 2010 4:09 am

If you dont have the B90 horseshoe tool, you can go this with a shop press and a slide hammer, though you will have to remove the entire trailing arm to do so, which isnt difficult. I showed in the tips thread how you can use the brake rotor as a slide hammer to pull the hub out from the bearing.

Defkon made a good point, if you remove the the rear control arms, you need to reference at what angle they are bolted into the subframe to avoid twisting your bushings with the car loaded. Though you shouldnt need to do this with this project.
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Re: BMW E36 325i Wheel Bearing/ Axle DIY FIX

Postby dantesboyz » Fri Nov 19, 2010 7:41 pm

going at it hard core tonight, trailing arms are getting pulled and camber shims are going in along with a few other minor maintenance things, my buddy has a few presses at his shop so the bearing in/out work will be done tomorrow.
what sucks though is last night i noticed one of my inner boots look likes something hit it (road debris???) the boot itself is fine but the peice it straps onto near the diff has a small ding that has just barely lets grease escape from out of the ding gap near the boots edge. wish i knew this a week ago when i put in the bearing order, so now it looks like i already know what i'll be doing nest week. gonna have to order another axle nut to i guess
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