I've replaced the front wheel bearings 3 times now and they keep on breaking
Two things come to mind. First they need to be pressed in or they will not necessarily be lined true in the housing, thus creating stress points and will wear out faster. Second, bearings these days are not properly packed with grease when they are built. Next time remove the plastic cover and fill the empty space with hi temp. bearing grease.Then put the plastic cover back on and install the bearing.
SOURCE: replace front wheel bearings
The bearings in your car are pressed into a hub. If the part is available as an assembly, it can be replaced that way. Generally on a front drive car:
Remove wheels and brake calipers
If it is pressed in: remove the rotors, disconnect the drive shafts and remove the steering knuckle. Then the old bearing is pressed out and the new one pressed in with a machine shop press. If the bearing is part of the hub, that will be unbolted and the new one swapped.
On a scale of 1-10 difficulty, Id rate it a strong 7
SOURCE: 2003 Pontiac Montana Front Wheel Bearings
Remove the wheel, remove the hub nut, remove the brake caliper and rotor, put your socket and extension through the hub flange onto the bearing retainer bolts, undo them, release the abs sensor connector if it has it, remove the bearing and hub flange as an assembly, put the new one on and go backwards from here. Torque the hub nut to 180 ft/lbs, your done.
SOURCE: replacing front wheel bearing
To install:
SOURCE: wheel bearing replacement left front
Diagnosing the bearings can be tricky depending on severity of wear. Typically - drone noise at highway speeds, squeeling, clicking or grinding noises at low speeds that reduce during braking, or pull off the wheel and brake assembly and check the bearing for slack or smoothness of rotation by hand. While doing this, check the brake assembly thoroughly - generally a more likely culprit of wheel noise.
Wheel bearing replacement is not for the novice backyard mech. - you will need pullers, press, etc. If you can get a rebuilt assembly - much easier.
SOURCE: replace front wheel bearings 99 ford explorer
not press fitted, standard tapered bearings, if 4X4 it is a little more involved, just dont misplace any of the smaller parts and you will be fine.
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