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14 FF Bearings

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by MudFrog, Oct 26, 2001.

  1. MudFrog

    MudFrog 1/2 ton status

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    Whats involved in changing the bearings on a 14 bolt FF? When I go above 50 mph in my rig I feel a small vibration/spinning coming from the rear end. The only thing I can come up with is it is the bearings. I did not replace them when I installed the axle. So what is involved and does anyone have any tips on changing them? Also.. where is the best/cheapest place to buy them?

    89 K5 Silverado, 4", 33's, 3/4 ton axles
    <a target="_blank" href=http://mudfrog.rockcrawler.com>http://mudfrog.rockcrawler.com</a>
     
  2. Stoopalini

    Stoopalini 1/2 ton status

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    I'm not sure on how to do the carrier bearings, but the outter bearing are pretty easy.

    Take the drum off, remove the axle seal from the hub and one of the bearings will fall out. Next, hammer the lug studs out of the hub and it will seperate from the drum and the second bearing will fall out.

    To hammer the studs out, put a lug nut on the stud you're going to remove, and hit that with a BFG. Use a lug nut so you don't mess up the threads.

    Thomas.

    -- '84 1-Ton Blazer --
    When the goin' gets tough,
    the tough go 1-Ton [​IMG]
     
  3. Boss

    Boss 1/2 ton status Author

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    Which bearing are you talking about? Carrier or outer? Outer is simple, but Carrier is YIKES!! I believe you pretty much have to tear down into it.
    Boss

    Pic of my truck Before N' After
    <a target="_blank" href=http://coloradok5.com/gallery/BeforeNAfter>http://coloradok5.com/gallery/BeforeNAfter</a>
     
  4. MudFrog

    MudFrog 1/2 ton status

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    I have no idea which is the culprit. I guess I'll start with the outer and see if it fixes my problem. I have a feeling if it's the carrier then I'll need to take it to a shop.

    89 K5 Silverado, 4", 33's, 3/4 ton axles
    <a target="_blank" href=http://mudfrog.rockcrawler.com>http://mudfrog.rockcrawler.com</a>
     
  5. K5RON

    K5RON 1/2 ton status

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    Most likely the vibes are coming from your driveshaft! Were the angles checked after the 14BFF install?




    Ron


    '84 K5......Tree Fitty, SM465/Np205, D44/14BFF, Pro-jection! .....and of coarse no other color than Odie!
     
  6. MudFrog

    MudFrog 1/2 ton status

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    I can tell it's not coming from the drive shaft... this is a distinct spinning feeling like it's bearings. It also doesn't do it 100% of the time. The spinning will start then stop go around 3 miles start again and so on.

    89 K5 Silverado, 4", 33's, 3/4 ton axles
    <a target="_blank" href=http://mudfrog.rockcrawler.com>http://mudfrog.rockcrawler.com</a>
     
  7. K5RON

    K5RON 1/2 ton status

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    Ok, I concur. Driveshaft vibes will be there all the time! at the same RPM. Wheel bearings are not that difficult to change. Carrier bearings aren't especially difficult either. Out of all the rear that I worked on the 14BFF is by far the easiest. Largest but easiest!


    Ron


    '84 K5......Tree Fitty, SM465/Np205, D44/14BFF, Pro-jection! .....and of coarse no other color than Odie!
     

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