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The front derailleur should also shi the chain cleanly and without hesitaon between
each chainring. If your bicycle is equipped with front indexing (a click between gears),
then each click or stop in the shier should equate exactly to a new gear posion. When
the chain has been posioned onto a new chainring, it should not rub on the front
derailleur. The chain should not fall o a chainring at any me. Derailleur control cables
are a crical component that must be well maintained for accurate shiing performance.
Check them for any sign of rust, fraying, kinks, broken strands and any damage to the
cable housing. If you nd any problems, the cables may need replacing before you ride.
(Fig. 4.15 - see previous page)
Lubricaon
All the pivong points of the front and rear derailleurs should be lubricated with light
oil at least every six months. (more oen in severely rainy or muddy condions) Be
sure to wipe o any excess oil to prevent aracon of dirt into the mechanisms. The
shiing cables should be cleaned and re-coated with a thin layer of grease every six
months, or whenever new cables are being installed.
Adjustment - Rear Derailleur (Fig. 4.16, 4.17)
The low limit screw determines how far the rear derailleur will travel toward the wheel
of the bicycle, while the High limit screw determines how far the cage will travel toward
the frame.
1. Shi the rear shier to the largest number indicated, disconnect the rear derailleur
cable from the cable anchor bolt and place the chain on the smallest sprocket.
2. Adjust the High limit screw so the chain and the smallest sprocket are lined up
vercally. Remove any slack in the cable by pulling it taut, then re-connect the cable
and ghten the cable anchor bolt securely.
3. Shi up through the gears making sure that each gear is achieved quietly and without
hesitaon. If noise occurs, use the barrel adjuster to ne-tune the cable tension. Turning
the barrel adjuster clockwise will decrease cable tension and allow the derailleur cage
to move farther away from the bicycle in small increments. Turning counter-clockwise
will increase cable tension and bring the cage closer to the bicycle. This will micro-adjust
the posioning of the derailleur cage in relaon to the freewheel. Simply put; turn the
barrel adjuster the direcon you want the chain to go.
MAINTENANCE
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