Help please
07-05-20, 01:40 PM
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Help please
Heyy good ppl of biking. I got my self a Ridgeback x0.4 2013 bike but the bottom crank is being really noisy. And to fix it In the shop would take too loong. Was hoping some one would help me out on what tools I need. I have specks of the bike but it doesn't tell me what size bottom bracket I need to replace it with.
Thank you in advance!
Thank you in advance!
07-05-20, 02:29 PM
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Shimano m171 chainset? Probably a UN26-k bb. So you need the splined tool to get the cartridge out. Here is a tech doc with a little more info. https://si.shimano.com/pdfs/si/SI-1LX0A-003-ENG.pdf You can google the suggested tools on it TL-UN74-S or TL-UN66 and TL-FC10/FC11. There are generic of these offered by various mfrs that might be a little less expensive than Shimano's.
However even if the shop is too busy. Ask if they'll just loosen if for you, then you can remove, clean up, install new..... then let them tighten. Otherwise tools might be a significant few dollars you'll never use again. Get another bike, it'll be a different tool.
p.s. make sure you pay attention to the spindle length when you get another. The tech doc says 122.5 mm, but that's not set in stone if the bikes mfr found another length worked better for that particular bike. Probably written on the old one if you could get it out. Certainly if the bikes mfr has a good support line, they'll be able to tell you if you call them or email them.
However even if the shop is too busy. Ask if they'll just loosen if for you, then you can remove, clean up, install new..... then let them tighten. Otherwise tools might be a significant few dollars you'll never use again. Get another bike, it'll be a different tool.
p.s. make sure you pay attention to the spindle length when you get another. The tech doc says 122.5 mm, but that's not set in stone if the bikes mfr found another length worked better for that particular bike. Probably written on the old one if you could get it out. Certainly if the bikes mfr has a good support line, they'll be able to tell you if you call them or email them.
Last edited by Iride01; 07-05-20 at 02:34 PM.
07-05-20, 04:18 PM
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You probably know by now you also need to remove cranks, which is another special tool and some knowledge of how to best use it so you don't strip out the crank threads. And that's easier if you remove pedals, which can usually be done with some standard tools, but not always. And you need to know which direction to turn them--they're different. Same with the bottom bracket--different thread directions.
07-05-20, 04:50 PM
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Check shell width for 68 or 73mm
If you can't find a UN26 in stock you can step up to a UN55 or a Tange LN 3922 for a few more $. Lots of places out of stock right now.
If you can't find a UN26 in stock you can step up to a UN55 or a Tange LN 3922 for a few more $. Lots of places out of stock right now.
Last edited by dedhed; 07-05-20 at 04:56 PM.
