SOURCE: mazda rustler 160i wheel bearings
a had sabe problem in a same model about one year.
i replaced inner and outer cv joint
SOURCE: how do I replace the front wheel bearings on a Mazda 626 1998
The front bearings on a mazda 626 are sealed and you must remove the entire hub assembly to have a shop or dealer install the bearings. The hardest part is you need to remove the center axel nut and it is very tight and is called a stake nut. If you do not have a fairly good amout of skill at repairs, this is one job that is safest left to the pros. Just one missed step can create more damage than you could beleive.
SOURCE: changing a wheel bearing, 2003 mazda 6
to change that, using a hydraulic press is highly recommended. if you are DIY experienced, this trick works as well:
take a pice of a stable metal pipe, 10-20 cm long. and in diameter just a tick smaller than gross bearing size. take a very heavy tool and use the pipe to beat out the old bearing. dont be shy, needs a lot of power.
do not use this method to insert the new bearing. use a pice of wood instead (must sit stable on the outer bearing ring!!), lubircate a bit and beat carfully and very straigt in fractions of a mm. this is the difficult part and here the bearing may brake if you are too rough.
Not really recommend, but working when used with brain and care.
SOURCE: how to replace wheel bearing hub
its not the same. the gm is a bolt on hub and bearing. on the mazda, its a press in. you need to remove the steering knuckle and use a hydraulic press to press the old one out and the new one in.
SOURCE: Left wheel bearing replaced no alignment done.
the car does not need to be aligned after a wheel bearing replacement. it is a good idea to get this done every 6 months depending on driving habits though. good maintenance.
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