Chapter 3: inspection, adjustment, and lubrication
These instructions explain how to replace a cable. After you have installed the cable, refer to the adjustment section for the type of shift system. Read the Warning About Mechanical Work before performing any service work on your bicycle.
Begin by shifting the chain to the smallest chainring and rear cog (or for a low-normal rear derailleur, the largest rear cog).
1. Note the path the cable follows, loosen the cable clamp bolt holding the cable, and remove the cable through the shift lever.
Note: If you can't find the cable access for your shifter, check with your dealer.
2. Inspect the housings; if they are damaged or rusty, replace them.
Note: If you replace any housings, make sure the pieces are of the correct type of housing, and cut them to the proper length (use the old pieces as guides). Make sure the housing ends are free of burrs; the cable should pass freely through these ends.
3. Grease the new cable and, following the same path as the old cable, feed the cable through the lever and all of the cable guides and housings, and the cable clamp bolt .
4. Cut the cable so no more than 2 inches (51 mm) of cable length extends beyond the cable clamp bolt.
5. Crimp on a metal end-cap to prevent fraying of the cable end, or apply some solder to the end of the cable.
6. Follow the directions for adjustment.
Front derailleur
Standard rear derailleur