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Spanish ISIS bottom bracket bearing change


matthew_coggan
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My bottom bracket has exploded on my Echo 24, not that happy as it hasn't had much use. I thought I would have to chance the whole bb but have since seen the bearings on tarty so got a few questions on how to change them.

One side of the bb is open as its come open and the bearings have all come out so will I be able to punch both sides out with a screw driver?

If so can I then put the new bearings in knocking them in gently? Or would I need the proper tool?

Any alternate advice am happy to listen to as am clueless with these Spanish bottom brackets.

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Best way to do it without having the proper tool, is to get a piece of threaded bar, m12 minimum size, with nuts, and 2 large washers. Get the bearings started in the frame, put the threaded bar with the 2 washers on the outside of the bearings, with the bar running through the middle. Then wind the 2 nuts together and it should drive the bearings in flat and square. Then simply install the axle, and the job should be a good un. I have one I had made, but instead of the washers I have 2 pieces of 2" square steel plate, 10mm thick, with holes drilled in them. I use this as a headset press as well

Edited by bing
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Best way to do it without having the proper tool, is to get a piece of threaded bar, m12 minimum size, with nuts, and 2 large washers. Get the bearings started in the frame, put the threaded bar with the 2 washers on the outside of the bearings, with the bar running through the middle. Then wind the 2 nuts together and it should drive the bearings in flat and square. Then simply install the axle, and the job should be a good un. I have one I had made, but instead of the washers I have 2 pieces of 2" square steel plate, 10mm thick, with holes drilled in them. I use this as a headset press as well

the axle has 2 flanges that sit against the inner faces of the bearings so that might not be the best idea!

although you could install the first bearing that way :)

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