UK Karting - Notice Board (2-Stroke Karting) : Re: Main bearings/seals 100cc

Notice Board (2-Stroke Karting)

Re: Main bearings/seals 100cc
Posted by 'Brakerider' on 15 Jul 2013 @ 11:07

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BrakeriderJoined: May 2013
Total Posts: 1
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Hi,

Yes the Seal is the rubber O-ring that sits in the crank half. You can left these out very easily with a flat head driver. You'll damage the ring whilst doing so only take it out if you have a replacement. Use a little grease when fitting new seals and be careful not to damage the spring inside the inner lip. You can usually push them in by hand but there rae tools available for getting a flush fit.

As for the bearings, just remove and clean everything off the crank half and stick them in a hot oven for 10 minutes. Then when removing, (with good oven gloves of course) turn the crank half over and the bearing should simply drop out. If it doesn't you will only need the most gentle of taps to remove it. Do not hammer away at it if it remains in place. Take it to a reputable machine shop to have the bearing removed ..However, this is rare.

One removed it's possible you'll find a small gold coloured ring either in the crank or stuck to the old bearing. Keep this as you'll need it, this is a spacer for correcting end float.

Let the crank halfs cool naturally ..do not try to cool them with anything as you'll warp them. You can find the the sizing and spec details on the seals and the bearings to be sure you're replacing with the correct ones and be sure to clean those crank halfs thoroughly before fitting anything new.

Hope you had someone do the crank for you though...

Message Thread:

Main bearings/seals 100cc by 'Matty42' (14 Jul 2013 @ 12:04)

Re: Main bearings/seals 100cc by 'Brakerider' << You are here!

Re: Main bearings/seals 100cc by 'Matty42' (15 Jul 2013 @ 17:49)

Re: Main bearings/seals 100cc by 'Brakerider' (16 Jul 2013 @ 15:17)

Re: Main bearings/seals 100cc by 'Matty42' (18 Jul 2013 @ 17:49)

Re: Main bearings/seals 100cc by 'Volts' (26 Jul 2013 @ 15:17)

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