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Thread: 2010 Uly 3-Bearing Wheel, Bearing Replacement

  1. #1
    Senior Member mmcn49's Avatar
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    2010 Uly 3-Bearing Wheel, Bearing Replacement

    Have 12-13K on the wheel. Removed the wheel to replace the tire. With the wheel removed couldn't easily spin the bearings by hand. Pulled the dust seals and found the outer bearing races were heavily rusted, rotor and sprocket side).

    Decided to replace them and dug out the HF blind bearing puller. Hammered and hammered on both sides, nothing moved, (bearings on the Lightning wheels pop right out). Removed the rotor and dumped a bunch of heat into the hub with two propane torches. Hammered again but nothing moved.

    Anyone have any ideas?

    Saw this video but don't know if its practical with my slide hammer.

    https://www.youtube.com/watch?v=Kvv-Cer5SXI

  2. #2
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    Soak the bearings with liquid wrench or WD40 for a few hours and then use slide hammer with bearing collet.
    Last edited by TPEHAK; 09-17-2015 at 04:23 AM.

  3. #3
    Senior Member mmcn49's Avatar
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    Thanks, they've been soaking overnight. We'll see what happens. I'm afraid I'll have to fab something else.

  4. #4
    Senior Member mrlogix's Avatar
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    if they don't come out take a pic and post it so we can see what your dealing with. The wheels are cast aluminum, even with the bearings being rusty they shouldn't be that tight that a puller can't get them out.

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    a few suggestions: get a top quality penetrant fluid like kano kroil or pb-blaster and allow to wick in between outer bearing shell and hub, both sides. you have 2 choices: first is to use a quality puller and remove ROTOR side bearing first. with that bearing removed flip the wheel and let hub spacer drop out. now use a serious punch and serious mallet and punch out the pulley side bearings. to do this you want to remove both the rotor and the pulley from the wheel. make up a spacer out of wood blocks to raise wheel off floor a few inches which allows the bearings to come out of their housing. this method works like a champ but you need a serious large diameter punch and serious mallet and wear gloves.

  6. #6
    Senior Member DSHUMAKER's Avatar
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    Lol i know all about stuck bearings this is the fun I had yesterday. FB_IMG_1442515730058.jpg

  7. #7
    Senior Member mmcn49's Avatar
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    Up-Date, Success! Hereís the story:

    Quote Originally Posted by TPEHAK View Post
    Soak the bearings with liquid wrench or WD40 for a few hours and then use slide hammer with bearing collet.
    Quote Originally Posted by lunaticfringe View Post
    a few suggestions: get a top quality penetrant fluid like kano kroil or pb-blaster and allow to wick in between outer bearing shell and hub, both sides
    When I knocked off last night I put Kroil along the outer circumference of the outer race and hub on both sides. Before leaving for aquatic aerobics this morning, (best exercise for aging joints) I sprayed both sides with PB Blaster.

    Quote Originally Posted by mrlogix View Post
    The wheels are cast aluminum, even with the bearings being rusty they shouldn't be that tight that a puller can't get them out.
    Quote Originally Posted by lunaticfringe View Post
    you have 2 choices: first is to use a quality puller
    Quality on the Harbor Freight blind bearing puller is probably barely OK but it is definitely light duty. The hammer doesnít have much mass and slide length is short.

    -I clamped the wheel vertically in the wheel clamp on a lift table
    -Measured hub lip to bearing race with a depth gage
    -Started manually hammering away
    -Re-measured and found zero bearing movement
    -Tied a nylon tie down strap on the hammer, (similar to the you tube video)
    -Hammered away, the strap dramatically increased impact force
    -Re-measured, bearing moved a fraction of a mm
    -Kept hammering away, it took a lot of blows before the bearing started emerging from the hub
    -Even with the bearing close to half out I couldnít get it to move by hand hammering
    -Strap hammering the last half of the bearing was fairly easy
    -Did the other side the same way

    Quote Originally Posted by lunaticfringe View Post
    now use a serious punch and serious mallet and punch out the pulley side bearings.
    I deliberately slide hammered out the outer bearing on the sprocket side because I didnít know if I could hammer two bearings out with the wheel clamped to the lift table.

    I have a piece of aluminum round stock that fit the hub almost perfectly and a large ball peen. I left the tire in the clamp and started hammering with moderate force. The bearing started moving and was pretty easy to drive out.

    Quote Originally Posted by DSHUMAKER View Post
    Lol i know all about stuck bearings this is the fun I had yesterday. FB_IMG_1442515730058.jpg
    Gnarly, fortunately mine came out in one piece.

    Thanks everybody for responding. Itís always good to get suggestions and opinions when youíre dealing with an odd issue.



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