
To loosen the cable, shift the chain onto the smallest front chain ring and smallest rear cog. Use the cable cutter to cut the cable at the cable end-cap. Before installing the new front derailleur , apply some waterproof grease to the mounting bolt. Then place the clamp around the frame and tighten the mounting bolt just enough to keep it in place. E-type front derailleurs require you to remove the drive side crank bearing and replace one of the spacers with the mount plate.
Bolt the E-type derailleur down with the single alignment bolt first, then torque the bearing cup back in place. The hardest part is buying the correct derailleur for your bike. The front derailleur cage should be approximately parallel to the chain.
If the derailleur cage is rotated too far from this position, it will shift poorly. Generally, the outer cage of the front derailleur should be aligned to the chain. This guide gives simple directions on how to replace the front derailleur cable, an important component that is easy to replace. The derailleur is the part of the bike that allows a rider to quickly shift gears while riding. Most bikes have two, one in the front and one in the back.