repair can be performed in just a few minutes if you complete the task correctly.
We have arranged a list in chronological order for task completion.
Tools Needed: 5mm
Allen Wrench or 9mm open-end wrench, Phillips screw driver, pliers and bike stand.
NOTE* If your adjusting screws are
not labeled, you will have to determine which one adjusts which function by trial
and error. When you turn the "H" screw you can actually see the derailleur move.
If you are turning the screw and nothing is happening then you are turning the "L"
- The "H" screw will
stop the derailleur from dropping down too far (past your smallest cog) and the
"L" screw will keep the derailleur from shifting into your spokes (past
your largest cog).
- Now, adjust the "H"
adjusting screw (it should be labeled and stands for high gear). This is accomplished
by pedaling and making sure the derailleur pulleys are properly aligned with the
last cog (smallest cog).Turning the "L" screw clockwise will cause the
derailleur to move up towards larger gears.
- Now, with the pliers, grab the
end of the cable and pull the slack out of the cable and re-tighten the anchor bolt.
- Shift up one gear to see if the
chain moves from the small cog to the next bigger cog. If it does not move up a
gear, it means that there is still too much slack in the wire and you need to fine
tune it with the adjusting barrel. Turn this to the left (counter-clockwise) to
increase the tension on the cable.
- Shift again, does it go up a
- Keep using the barrel adjuster
to fine tune the cable tension. Remember, turning it to the left will help the derailleur
move up a gear, turning the adjuster to the right will loosen the tension and make
the derailleur not travel as far.
- Now, you must adjust the "L"
adjusting screw(should be labeled and stands for low gear) (picture:A).
This is the biggest cog in the rear cluster.
- Shift slowly and pedal so that
the chain moves into your biggest cog.
- If you cannot
get the chain to go into this cog
it means that the "L" screw is stopping it from going into this gear.
Loosen (counterclockwise) the "L" screw until it allows for the chain
to go into this gear. NOTE: YOU WANT THIS ADJUSTMENT TO BE PRECISE SO THAT YOU NEVER
SHIFT YOUR CHAIN INTO THE SPOKES. ADJUST IT SO THAT IF THE "L" SCREW WAS
ANY TIGHTER THE CHAIN WOULD NOT GO INTO YOUR BIGGEST COG. This is your final adjustment.
- If your chain makes
it into the biggest cog, then you need to lock the setting down by
tightening (Clockwise) the "L" screw until you feel the screw hit the
derailleur. You want this adjustment to be performed precisely like mentioned above.
Just enough for the chain to make it into the biggest cog if you have this adjustment
too loose you will shift into your spokes.
DISCLAIMER: Please understand that by working on your own bike you are
taking responsibility for the adjustments. Most adjustments require expert service
and the descriptions above are written for reading purposes only and are not factory
directions. Bikeparts.com claims no responsibility for any adjustments made by the
reader and recommends that you take your bike to a shop for proper adjustment.