Shimano FD-T4000 FRONT DERAILLEUR ALIVIO HI-CLAMP DUAL PULL 63-66 ( no longer on the shimano site )
Shimano FD-T4000 FRONT DERAILLEUR ALIVIO HI-CLAMP DUAL PULL 63-66
The front derailleur simply shoves the chain off one front chain ring and onto another ring. The cage surrounding the chain is pulled in one direction by the inner wire. A spring in the derailleur returns the cage to the other direction when the inner wire is relaxed. A properly adjusted front derailleur should shift the chain between the front chainrings but will not throw the chain off the rings. The basic adjustments for the front derailleur are the height, rotation, limit screws and inner wire tension
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