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Bearing puller?

Discussion in 'Kawasaki 250cc In-line 4's' started by Frankster, May 3, 2014.

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  1. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    Hi All,

    Took my ZXR250A street bike for a spin this morning and 10 minutes in I heard a weird noise. With Kiffsta's wise words ringing in my ears ("Crunching metal noises are bad!") I pulled over to see what was up. Fast forward, I got the bike home on the back of a trailer and started the tear down. Fast forward again and now I need to know how do I get this (see picture) bearing out? I assume bearing puller is required? Also, the bits that fell out (see second picture) don't appear to be in the parts schematic (3rd attachment) and I don't know the part numbers. Any advice on removing the bearings and why those extra bits aren't on the schematic would be appreciated. Chris, do you have this part/parts?

    Cheers

    Frank

    Gearbox Bearing.jpg Bearing bits.jpg Gearbox Bearing.png
     
    Last edited by a moderator: May 3, 2014
    Frankster, May 3, 2014
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  2. Mclaren

    Mclaren Well-Known Member Contributing Member

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    The washer with 2 holes in bottom left is like a retainer it stops sprocket coming of as for the bearing yer puller be good if u have one or now some one
     
    Mclaren, May 3, 2014
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  3. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    Thanks Mac. I knew that bit. Just to clarify, when I look at the parts schematic there is a bearing, a collar & then he sprocket. When I pulled the sprocket off, a lot of metal pieces fell out. There was also a rubber ring (dust cover I assume). The rubber ring isn't in the schematic, so I'm confused as to where the metal pieces have come from.

    I don't have a bearing puller. I've never pulled out a bearing, so I might see if there's something educational on YouTube. Can someone confirm if all bearing pullers are same?

    Thanks
     
    Frankster, May 3, 2014
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  4. Mclaren

    Mclaren Well-Known Member Contributing Member

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    Yes and no can get taper bearing pullers and normal u just want normal set can get cheap sets at tool shops and yer YouTube will have a vid they are really easy to use once u seen it done
    With the rubber does the other side of bearing have a rubber cover if so bearing was probably a sealed bearing and that side of the bearing the seal perished and fell apart
     
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    Mclaren, May 3, 2014
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  5. Mclaren

    Mclaren Well-Known Member Contributing Member

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    Just have to measure bearing and get a set that fits they come in sizes like 10mm to 100mm and what not however if u don't have room to get arms underneath and pull off then using a oxy and be carefully not to over heat!! Heat bearing up till it just easy to slide off and use heat proof gloves like welders one
     
    Mclaren, May 3, 2014
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  6. kiffsta

    kiffsta Senior Member

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    Sorry Frank, I don't have a spare bearing, hopefully you can extract it and take it to a bearing place, I almost certain I have a brand new dust cover seal, can you measure yours ?
     
    kiffsta, May 3, 2014
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  7. risky

    risky risky

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    bearing shop can supply bearing from internal diameter and external diameter. the balls are held in a cage and yours has chwwed up. the seal can also be got from a bearing supply dealer.probably 20 bucjks or less for both.
     
    risky, May 4, 2014
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  8. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    Chris,

    I think Mac might be right. I went and had a closer look at the "bits" and it might have been a sealed unit that has fallen apart, although the rubber seal seems too big to fit inside the outer bearing race. I will measure bearing inside and out size and post asap. I will also measure rubber seal.

    I don't have an oxy so hopefully I can buy a bearing puller and get to the bearing that way.

    Cheers
     
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    Frankster, May 4, 2014
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  9. Mclaren

    Mclaren Well-Known Member Contributing Member

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    Nice work mate keep us posted
     
    Mclaren, May 4, 2014
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  10. Phil

    Phil Senior Member Contributing Member

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    Hey Frank
    Just thought about your issue, the oxy is purely to heat the casing if I haven't got it mixed up. Aldi have on special on butane gas unit for the kitchen, ideal for what you want and I think they are about $10.00, could get you out of trouble.
     
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    Phil, May 4, 2014
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  11. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    Thanks Phil. Just bought a bearing puller from Repco and will try it this arvo. Failing that, it's off to Aldi I go.

    Cheers
     
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    Frankster, May 4, 2014
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  12. Mclaren

    Mclaren Well-Known Member Contributing Member

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    How ya go mate
     
    Mclaren, May 4, 2014
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  13. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    No go with the bearing puller. It can't get to the bearing because of the width of the shaft, so I'm off to Aldi to buy a butane gas unit to see if that helps. I'll need to make something to slide into the bearing to pull it out. I'm assuming that using an Oxy is how a mechanic would get this thing out (or a specialist tool) as it's in there good and deep.
     
    Frankster, May 5, 2014
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  14. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    Just a quick update...

    The bits of metal were actually the ball bearing retainer (see image below of standard bearing). I was confused as to why the ball bearings had also fallen out of the bearing case and now I know. I assume once I get the stuffed one out that a sealed bearing can be used? Also, part numbers for the bearing and collar are in below image. Still no sign of a rubber dust seal.

    Gearbox bearing.png IMG_1325.JPG Bearing&Collar.png
     
    Frankster, May 5, 2014
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  15. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Just take it to the local bearing shop and they will match it ..... theres sure to be a number on it somewhere
     
    GreyImport, May 5, 2014
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  16. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    Grey,

    I do have a couple of questions...

    If I replace it with a sealed bearing, how do I get it out in the future? Oxy and heat?

    Will I need a dust seal if it's a sealed bearing?

    Frank
     
    Frankster, May 5, 2014
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  17. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Im no bearing guru but my understanding is the sealed bearing is just a more modern non maintenance version of the open type.

    I presume the same install and removal methods would be the same.

    This is the rubber dust seal .....?

    Did u remove that? ...is it damaged? ...... the bearing place should have one

    dust seal.jpg
     
    GreyImport, May 5, 2014
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  18. risky

    risky risky

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    once the bearing is out take to a bearing supply co and the dust seal which has an internal spring to hold on to shaft. the original bearing was non sealed for the gearbox oil to lubricate.what you call a dust seal is an oil seal.the bearing cage broke and the bearings fell out. count them and see if they fill the space as some may have fell into the gearbox.
     
    risky, May 5, 2014
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  19. Phil

    Phil Senior Member Contributing Member

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    Very wise words risky, you never know.
     
    Phil, May 5, 2014
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  20. Tim_

    Tim_ resident nutcase Contributing Member Dirty Wheel Club

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    I think he is taking about the dust seal in the bearing it's self. As this bearing is in contact with oil I reckon it's a complete sealed bearing. And if you give me the I.D and the O.D I can see if the fitters at work have a that size. All the ones they use are food grade so are sealed.
     
    Tim_, May 5, 2014
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