When you're cycling outdoors and your bike breaks down, forcing you to walk back home, it can be really disappointing. To avoid this situation, always remember to carry tools when you go cycling—don’t assume accidents won’t happen. It’s always better to be prepared. Below are some common issues encountered in the wild and how to fix them:
Flat tire: This is a common occurrence. When you get a flat, remove the wheel, use tire levers to take off the outer tire, and then take out the inner tube. If you have a spare tire, just install it directly. If not, you’ll need to patch the tire. To do so, first locate the puncture, then lightly sand the area around the hole with sandpaper or something rough. Apply tire patch glue, wait until it’s nearly dry, then stick on the patch and press it firmly. Inflate the tire to check for leaks, then reinstall the inner and outer tires and inflate fully.
Check the bottom bracket: Remove the chain, hold the crank arms and shake them left and right. If there is any play, tighten the fixing bolts. If it still wobbles, you may need to adjust the bottom bracket bearings. Place your ear against the saddle and rotate the cranks. You should hear a smooth “whooshing” sound. If you hear grinding or any other unusual noises, it indicates that the bearings are damaged and the bottom bracket should be replaced.
Check the pedals: Remove the pedals using a 15mm open-end wrench. Note that the left pedal has a left-hand thread—be careful not to remove it incorrectly. Pedal bearings usually don’t require much adjustment, but they should still be checked. If you’re using clipless pedals, inspect whether their mechanisms are functioning properly and apply lubrication. Check the derailleur: Examine all moving parts of the derailleur for any looseness. If there is play, it indicatesbicyclethe derailleur is quite worn and should be replaced. If there’s no play, apply lubrication to the moving parts.
Check the frame: Inspect all paintwork. If there is rust that has led to holes in the frame, the frame must be replaced. If the frame has been impacted and deformed, it should also be replaced. Replace all internal and external cable housings: Over time, all cable housings wear out, so it's recommended to replace them to maintain performance.
Check the hubs: Remove the front and rear wheels and inspect the spoke holes for any cracks. If found, replace them immediately. Rotate the hub axle by hand, then shake it up and down. If you feel any play or excessive looseness, disassemble the axle, clean out the old grease inside, then reapply fresh grease, and reassemble the axle. Be sure to adjust the bearings so that the axle turns smoothly without any up-and-down play.