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Help - How to identify a worn bearing

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  • #1

    Help - How to identify a worn bearing

    Hello everyone,

    so this is my first post. I have a ford aspire (actually Kia avella in Europe). I am hearing this humming noise when I go over say 50km/h, and it increases with speed. It's probably one (or more than one) of the wheel bearings which need replacing; problem is I need to know which one it is before changing it.

    Can someone tell me which is the best way to identify which bearing is making the noise?

    Thanks
    Tags: bearing, humming, noise, wheel
  • #2
    Jack it up and wiggle the wheels - the bad one will probably have some play in it.

    Originally posted by kiapower View Post
    Hello everyone,

    so this is my first post. I have a ford aspire (actually Kia avella in Europe). I am hearing this humming noise when I go over say 50km/h, and it increases with speed. It's probably one (or more than one) of the wheel bearings which need replacing; problem is I need to know which one it is before changing it.

    Can someone tell me which is the best way to identify which bearing is making the noise?

    Thanks

    Comment

    • #3
      Welcome to the site!!!!

      All you have to do is identify front or back wheels are mack the noise.
      Once you have done that...change all the bearings on that axle..inners...outers...both sides of the car.

      Axle related components should always be changed on both sides of the car.
      Joe Lutz

      The SKATE ..... 1992L 5spd
      The Greatest Purchase I Ever Made

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      • #4
        Bearings

        Let's say it's the left rear bearing. When going straight, it makes noise. When turning left, it will make little or no noise because there will be less load on the left rear tire. When turning right, there will be more noise due to higher load on the left rear. Be sure to replace both inner and outer bearings.
        90 Festy (Larry)--B6M (Matt D. modified B6 head), header, 5-speed, Capri XR2 front brakes, many other little mods
        09 Kia Rondo--a Festy on steroids!

        You can avoid reality, but you can't avoid the consequences of avoiding reality--Ayn Rand

        Disaster preparedness

        Tragedy and Hope.....Infowars.com.....The Drudge Report.....Founding Fathers.info

        Think for yourself.....question all authority.....re-evaluate everything you think you know. Red-pill yourself!

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        • #5
          You can often hear a noisey bearing if you spin the wheel while vehicle on jacks.

          Comment

          • #6
            Hi guys,

            thanks for your replies and my apologies for not replying earlier but I was rather busy.

            So I jacked the 4 points one by one. I first did the front wheels, I rotated them and could not hear any noise and also tried to move them at 90 degrees and could not detect any freeplay.

            When I tried the two back wheels it was a different story. I could not hear any noises though when I moved them at 90 degrees I could notice some freeplay, one side more than the other. I've been reading the haynes and it says that I should check these every so thousand miles. It also says that there is an adjustment which involves tightening the screw and "feeling" for free play while at the same time the wheel should spin freely.

            I was going to try to tighten them a bit first before changing the bearings hoping that the freeplay will go away. What do you guys think?

            ( I know you're probably saying why hasn't this fool tightened them and saved himself a post but got some other stuff going on this week).

            So any comments ?

            Thanks

            Comment

            • #7
              I would change them or try and re-pack them with grease. They are easy as can be to change the rears. Plus the bearings are cheap as well.
              89 Festiva L Carby 4 Speed... RIP. Evicted and Scrapped. I HATE MY FAMILY
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              • #8
                Originally posted by kiapower View Post
                I was going to try to tighten them a bit first before changing the bearings hoping that the freeplay will go away. What do you guys think?

                So any comments ?

                Thanks

                Just one. If the bearings are to the point they are making noise, they are already history. Change them.

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