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How to replace wheel bearing hub

I have a mazda 3 2004, 2.3 L. How to replace wheel bearing hub. I have the part and no mazda manual. I have replaced bearing hub's on GM minivans. Is it the same idea?

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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.

Posted on Nov 12, 2009

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Posted on Jan 02, 2017

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Video of how to replace rear wheel bearings of a Mazda 323, 1.3,sting,front wheel power


take the rear hub off
you will need a hydraulic press or a vice to push bearing out and then in.

Jul 09, 2016 | Mazda Cars & Trucks

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Mazda 323/Protege front wheel bearing


The moment you can hear a loud noise coming from front wheels while driving straight that means that your wheel bearings are ready for replacement. In a Mazda 323 BJ (1999-2004) it usually comes every 150-200 thousand kilometers (95-120k miles). To replace the bearing (do two of them in one go even if only one can be heard) you need to do as follows:
Loosen the nut on the half shaft, jack up the car, remove the wheel, dismantle brake caliper and brake disc, remove all ball joints attached to the hub, detach the shock absorber from the hub (no need of removing it completely), once you have the hub basically hanging on the half shaft, untie the nut and pull the hub out of the shaft so you can hold it in your hands. You will need to go to a garage with a 12ton (minimum) press, no point of trying to hammer the bearing out as you may damage the hub and your whole work will be for nothing. Get the old bearing pressed out and the new one pressed in.The Mazda part numbers for the front bearing kit are: B455-33-047A(B,D),GJ21-33-042B,G304-33-065,B21M-33-048.
After getting the bearing fitted into the hub, all we need is to reverse the whole process, put the shaft into the hub, attached the hub to the shock absorber (makes it easier to attach the rest), put the nut and tight it just as much to feel there is nearly no movement (do not overtight it as this might damage the bearing), attach all ball joints back to the hub. Make sure all nuts are tight, use a
tension wrench when needed, put the brake disc back on the hub, install the brake caliper, once you have all them on and tight put on the wheel, then get someone to press the brake while you tight the shaft nut with the tension wrench, check the wheel for play or hard movement. Lower the car down and take a slow drive around (do not accelerate sharply or brake rapidly, just a gentle drive around. Normally a wheel bearing should be in correct position and use after about 200km (120 miles) distance. After that check if it is not overheating (too tight) or there is a play (too loose). Tight or untight if necessary, recheck after same 200km (120 miles).

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What is a front right barring on a mazda mx6


You must be referring to the wheel bearing. The wheel bearings are pressed into the wheel hub. If they are bad, most people just replace the hub with new bearings already installed.

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1 Answer

How do i pull the hub off my 2002 mazda , on drivers side front


REMOVAL & INSTALLATION Except Miata FRONT
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Remove or disconnect the following:
    • Steering knuckle from the vehicle
    • Inner oil seal from the knuckle
  3. Using Mazda Hub Puller tools 49 G033 102, 49 G033 104 and 49 G033 105, pull the front wheel hub from the knuckle assembly.
  4. Remove or disconnect the following:
    • Bearing inner race from the front wheel hub
    • Retaining ring from within the knuckle
    • Front wheel bearing from the knuckle, using the hub puller tools
    • Brake dust shield
  5. Clean and inspect all parts but do not wash or clean the wheel bearing. The bearing must be replaced. To install:
  6. Using Mazda Press tools 49 G033 107 and 49 H026 103, install a new dust shield cover assembly to the knuckle.
  7. Using the press tools, press a new wheel bearing into the knuckle assembly.
  8. Install or connect the following:
    • Wheel bearing retaining ring
    • New oil seal using Installation tool 49 V001 795
    • Front wheel hub using the Mazda press tools
REAR
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section. NOTE: The wheel bearings are not serviceable. If the bearings are bad, a new hub/bearing assembly must be installed.
  2. Remove or disconnect the following:
    • Rear wheels Fig. 1: Exploded view of the rear wheel hub and bearing assembly (disc brake model shown, drum is similar) 7923mg87.gif

    • Brake drum, if equipped
    • Rear caliper and rotor assembly from the hub, if equipped
    • Hub dust cover
  3. Raise the staked portion of the hub retaining nut with a hammer and chisel.
  4. Remove or disconnect the following:
    • Hub retaining nut and discard it
    • Hub and bearing assembly from the spindle Fig. 2: When installing the new hub nut, be sure to stake it into the notch on the spindle 7923mg86.gif
    To install:
  5. Install or connect the following:
    • Bearing assembly on the spindle. Torque the new nut to 131-173 ft. lbs. (177-235 Nm)
    • Stake the nut into the groove in the spindle
    • Dust cover
    • Assemble the brakes
    • Rear wheel

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1 Answer

I have been told my front wheel bearing is bad. Can replace the just bearing or do I have to replace the whole hub assembly.


the bearing and hub are peened as a assembly and will need to be pressed out of hub carrier on early 05. later models use a one piece bearing that will need to have hub pressed out, then bearing pressed out of carrier both bearings are avalable aftermarket

Oct 23, 2010 | 2005 Mazda 3

1 Answer

Rear wheel bearing is in need of replacing on my 91 Mazda Protege, Howv do I do it


That is a whole hub assembly

Remove the wheel, unbolt the center of the hub, pull old hub off, and slide new one on....its real simple

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1 Answer

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