Recently the right front wheel bearing went bad on my 2002 Mazda 626. Apparently my oldest daughter hit a large pot hole bending the wheel and damaging the wheel bearing. I noticed a puny hum in the front end with a puny shutter as well, I understanding that the tires needed to be balances and rotated, so I took it into the shop to be checked out. Well to my surprise I was told the bad news and what was worse was the number they wanted to charge - over 0 to fix bearing and to replace the wheel. That is when I decided to do it myself.
Below I will help you by listing the tools you will need and steps on how to get it done.
Ratchet Wrench Set
Things you will need:
Large adjustable wrench
Channelocks
Bearing race driver tool
Various size punches
Socket and ratchet set
Assorted wrenches
A rags or two
New wheel bearings
Wheel bearing grease
New cotter pin
New grease seals
Wheel blocks
Safety glasses
A jack and a pair of jack stands
Even if the bearings are not making a noise it is always a good idea to have them inspected every 30,000 miles. I have it done when my breaks are replaced.
Okay let's get started.
Get all of your tools and supplies together before you begin and allow plenty of time to do the job.
Please take note that these are general instructions and consult the approved repair manual for your vehicle.
Always think protection first whenever you're working nearby machinery. Wear protection classes to safe your eyes and beware of hot objects, sharp items and perilous materials. It is very, very important to never work on a car that is only supported by a jack, always place a sturdy foundation under the vehicle to prevent it from falling on you.
From this point on cleanliness is important. You do not want any dirt, sand or metal chips inside the hub.
1. Take off your disc brake calipers and caliper bridge to Take off the rotor.
2. Take off the bearing cap. This is a press fit and to Take off it grab it with your channelocks and work it back and forth until it pops off. Be meticulous not to crush it.
3. Once the cap is off you will see a cotter pin, Take off the cotter pin and Take off the retainer ring. If your vehicle has a castellated nut, you will not have a retaining ring.
4. Using your channelocks or adjustable wrench, Take off the nut from the spindle.
5. Next Take off the outer wheel bearing and washer.
6. Slide the rotor or drum off the spindle.
7. Take off the grease seal and take out the inner wheel bearing.
8. Wipe all the old grease from inside the hub.
9. Take off the bearing races from the hub.
10. Take a punch with a flat narrow tip and place it on the back of the race.
11. Tap the race out, alternating from side to side so it comes out evenly and doesn't get cocked in the hub.
12. Once it's out, flip the rotor or drum over and do the same for the other race.
13. Clean the inside of the hub with some rags.
14. Make sure the spindle is clean as well.
That's all there is to it. Like I mentioned earlier take your time and you will not get frustrated, good luck with your project.
How To Replace Front Wheel Bearings - You Can Do That