If you are replacing the bottom bracket, you'll need to measure the length of the axle. Usually its from 120mm to 127mm, depending on the how many chain sprockets on the crank. Schwinn contracts many factories to make it's bicycles. So the components like bottom brackets are as cheap and old style as it is. Most of the time you can just replace the bearings and it's good as new for under $10 in parts. A new sealed bearing BB assembly, can be purchased for under $15 on Amazon. You'll need to measure the axle length.
This Is FixYa afterall, so I assume it's more DIY than take it to a bike shop and get over charged. There are lots of videos on Youtube to show you how to rebuild or replace a BB. RJ the Bike Guy, has great videos on how to remove stuck fixed side of the BB. Read the comments of the videos as well, many have more tips if the video does not show it.
Serial number is of no help at all in determining replacement. The bottom bracket depends on the model of crank installed, which can vary even within the same model of bike. Take to a bike shop, post a picture of the crank and give the model name of the bike, or do some research at: Repair Help
I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881
SOURCE: How to disassemble crank bearing on Schwinn Mesa Mountain Bike
You wil need a couple of special tools, or be fairly creative with the tools you have.
Once you have it opened up ou can determine if you need new bearings or crank axle.
to assemble, reverse above procedure, insuring bearing play is minimalized.
Hope this helps.
Ed
SOURCE: Schwinn S40 DSX part name
I think you will find they are called Jockey Wheels ,
All the best smirf 617
SOURCE: Schwinn S40 DSX part name
Forget new guide wheels. A new rear derailer is the real fix. You will need to order a new one by the number of gears on the rear gear cluster. How the derailer is mounted, Which way it moves when by the spring direction etc... By the way, get a higher quality one than the one you have got. If you go megawheel on the lower guide wheel; which I recommend, you might need a couple more segments in your chain. Yes, you need a new chain. If you wore out a part on you derailer, your chain is getting old. I recently bought a new rear derailure for my wife's bike for 29 bucks at a much better quality than the old one. It does not have problems of getting between gears, clicking etc... like the old one did new.
SOURCE: bottom bracket need replaced. needs a
impossible to tell you without knowing the bike brand and model and year, although you have provided that 1999.
If you take into a bike shop, which is the usual place to purchase the parts you need, they will be able to tell you what size Bottom Bracket will fit your bike, also what options you will have for replacement cranks and bottom bracket. This could be a very complicated issue when replacing with parts that are 11-12 years newer, the shop will be best equipped to give you all your options.
SOURCE: How do i raise the
Probably. Getting Riser Bars or a riser stem or simply flipping the stem over or getting one with a different rise and reach might give you the added height you need. If you LIKE the handlebars, the stem is the best option as most new ones come with front loaders (detachable front caps) that allow replacement without stripping components off one side of the handlebar. In minutes a Bicycle Shop could swap any number of them onto your bike for you to try.
Detailed advice...
http://www.sheldonbrown.com/handsup.html
1-800-626-2811
The year it was made might affect the answers. Ever seen this before - "*All prices and specifications are subject to change without notice."
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