Easy to get started with Gear Shift Cable replacement

When the bicycle transmission is in use, the line tube is attacked by rain, sludge, etc., and the transmission line wire will be aged and rusted, which makes the shift lever jerky and the transmission cannot be accurately entered. Generally speaking, oil can be injected through the line tube. Increase the lubricity to increase the service life of the transmission line, but the effect will not last; in fact, the cost and labor of directly replacing the transmission line wire are not more than the former, and it is also the current practice. In addition, the outer tube of the rusty transmission line will usually be rusty. Corroded, can be replaced together as appropriate.

The shifting cable replacement is not complicated. A skilled technician can usually do it in 5 to 10 minutes. In this article, we will take a road bike as an example to show you how to replace the shifting cable. Interested riders can also replace it by themselves for reference.

Preparation tools:

▲Pliers, 4mm Allen key, wire cap, 5mm Allen key, shifting cable (from left to right)

Replacement steps START:

▲1. First reduce the gear to the lowest level, and fully relax the shifting line.

▲2. Use hand pliers to cut the steel wire, and cut it at the same time to avoid burrs.

▲3. Take off the rear spool tube, pull out the shifting cable and detach the chainstay.

▲4. Pull out the bottom bracket, pay attention to the white inner tube not to fall into the frame.

▲5. Pull out the steel wire slowly and completely from the wire routing hole of the down tube.

▲6. Open the handle cover and withdraw the whole wire from the hole.

▲7. Insert the new steel wire into the original hole and pass it out along the outer pipe.

▲8. Enter along the original road, and move slowly to prevent the inner tube from falling off.

▲9. Pass the steel wire out of the lower tube, and then pass through the bottom bracket hole.

▲10. If there is a protective gasket for the shifting cable, remember to put it on this dress.

▲11. After putting on the outer tube, insert the steel wire and dial, and then connect the outer tube.

▲12. Tighten the steel wire and tighten it with the inner six wrenches.

▲13. Clamp neatly and leave a 3 to 5 cm steel wire.

▲14. Put on the wire cap and clamp it flat with pliers to fix the wire cap.

▲15. Then debug: Turn the crank to raise the gear to the highest level.

▲16. Finally, tighten the knob at the end of the outer tube to tighten the shifting cable.