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How to: rear wheel bearings??

8.3K views 14 replies 11 participants last post by  DCG  
#1 ·
1997 NAS D90. Pretty sure I need new rear wheel bearings as I have a nasty squeak at low speeds. How hard are they to change? From what I have researched it seems like a pretty easy job once I find a 52mm socket. I've never done wheel bearings and have basic tools and a wet/cold driveway :-D any advice is much appreciated. I'd like to give them a try this weekend. Thanks!
 
#3 ·
pretty easy. and rears are easier than fronts. you need a hub nut socket. and use Bill Burke's trick of going to Home Depot and getting a plastic PVC drain plug to use for seating your seal in the hub. I think it's 4", take your seal with you to match up diameter.

Basic things like this are so well covered by Rave that all you need to do is solve for special tool reference and go by the book.

good luck
 
#4 ·
If you are in need of new brakes, or another victim of the "while-your-at-it" syndrome, you can get new rotors for pretty cheap and then just put new bearings in the new rotors. Then you don't have to mess with getting the old bearing races out.

Also in my opinion not a bad time to pick up the harbor freight bearing race and seal drift set. You can use an old bearing race to help put them in, but that little kit has come in handy a number of times for me.

Otherwise a real straight forward job. Most places sell the seal kits too, new seals, bearing, and new retaining washers. Give Trevor at rovahfarm a call.
 
#6 ·
If drum brakes in back, undo drum retaining screw(s) and remove drum. If disc undo caliper attaching bolts and carefully bend caliper up and out of the way.
Pop off dust cap. Undo spring clip if equipped along with shims and set aside.
Remove the drive flange bolts (5) and set aside. Withdraw axle shaft if one piece, or remove drive flange and set aside.
You will see a large washer that has been bent. Using a flat screwdriver and a mallet, drive the bend flat so that the nut can be removed. remove nut, washer, inner nut, thick washer. Pull outward on hub being sure to catch the bearing if it falls out.
To dismantle hub, pry out inner hub seal and remove inner bearing cage. You should be left with only the bearing cups in the hub. Drive these out using a long drift or punch. Work from one side to the other rocking them out.
Thoroughly clean hub inside.
lightly grease outside of bearing cups and drive them in using the old cups as buffers. You'll reach a point where the old cups will get stuck so switch to your brass drift when that happens. Alternately, take the hub and cups to a shop and have them press in the cups. Cost should be minimal.
Thoroughly pack the inner race with new grease, drop it in hub and install new inner hub seal. Pack in more grease. Install hub onto stub axle. Grease outer race and cup and slide onto stub axle. Install thick washer, adjusting nut and adjust hub. Install new flat washer and locknut and tighten, Check hub for runout. If happy, bend up one side of the flat washer to lock the outer nut in place. Put the rest back together with new gasket on drive flange.
I would say here that this should be done in conjunction with new rotors and pads or drums and shoes. Since that job requires as much effort as the new bearings the two jobs done at the same time is a time saver.
 
#7 ·
If drum brakes in back, undo drum retaining screw(s) and remove drum. If disc undo caliper attaching bolts and carefully bend caliper up and out of the way. Pop off dust cap. Undo spring clip if equipped along with shims and set aside. Remove the drive flange bolts (5) and set aside. Withdraw axle shaft if one piece, or remove drive flange and set aside. You will see a large washer that has been bent. Using a flat screwdriver and a mallet, drive the bend flat so that the nut can be removed. remove nut, washer, inner nut, thick washer. Pull outward on hub being sure to catch the bearing if it falls out. To dismantle hub, pry out inner hub seal and remove inner bearing cage. You should be left with only the bearing cups in the hub. Drive these out using a long drift or punch. Work from one side to the other rocking them out. Thoroughly clean hub inside. lightly grease outside of bearing cups and drive them in using the old cups as buffers. You'll reach a point where the old cups will get stuck so switch to your brass drift when that happens. Alternately, take the hub and cups to a shop and have them press in the cups. Cost should be minimal. Thoroughly pack the inner race with new grease, drop it in hub and install new inner hub seal. Pack in more grease. Install hub onto stub axle. Grease outer race and cup and slide onto stub axle. Install thick washer, adjusting nut and adjust hub. Install new flat washer and locknut and tighten, Check hub for runout. If happy, bend up one side of the flat washer to lock the outer nut in place. Put the rest back together with new gasket on drive flange. I would say here that this should be done in conjunction with new rotors and pads or drums and shoes. Since that job requires as much effort as the new bearings the two jobs done at the same time is a time saver.
Bill ur old school. http://m.youtube.com/watch?v=ALTj4OEV5Gc
 
#14 ·
#11 ·
Slow speed squeek I would look at your rear and front prop shafts first ..possibly dry u-joints.
If your doing the wheel bearings make sure you clean all the grease out and inspect each roller for wear or burn mark you'll know hwn you see a bad one but usually if there that bad you'll get a groan not a squeek...hope that helps
 
#12 ·
Slow speed squeek I would look at your rear and front prop shafts first ..possibly dry u-joints. If your doing the wheel bearings make sure you clean all the grease out and inspect each roller for wear or burn mark you'll know hwn you see a bad one but usually if there that bad you'll get a groan not a squeek...hope that helps
Thanks! I greases the u joints and nothing changed. I'm just hoping it's not the carrier bearings I'm hearing. This would be the 3rd time I've blown a carrier...not even off-roading much.