19
K
ADJUSTMENT OF TENSION AT DERAILER
These procedures are also difficult: we recommend you
consult one of our qualified technicians.
NB: Problems when changing gear are very often linked to
the derailer cable tension; adjusting the derailer travel is
much less common.
1 - Adjusting rear derailer travel
To prevent the chain jumping off the cogs (in the wheel
spokes or between the rear dropout and the cogs), it is
important to adjust the derailer travel using the H and L
stops:
• Screw H enables the lower stop to be adjusted (small
cogwheel) : untightening this screw enables the chain to
position itself to the outside of the small cogwheel.
• Screw L enables the lower stop to be adjusted (large
cogwheel): untightening this screw enables the chain to
position itself to the outside of the large cogwheel.
2 - Adjusting front derailer movement
Adjusting the inner stop
By turning the outer screw of the front derailer in direction
A, the derailer range moves towards to the smallest chain
ring; by turning it in direction B, it moves away from the
large chain ring. Then adjust so that the clearance between
the chain guide inner plate and the chain is between 0 and
0.5 mm.
Adjusting the outer stop
By turning the inner screw of the front derailer in direction A,
the derailer range moves away from the smallest chain ring;
by turning it in direction B, it moves towards the large chain
ring. Then adjust so that the clearance between the chain
guide outer plate and the chain is 0 to 0.5mm.
Adjusting the cable tension creates a link between a position on the gear lever and a position in the gear system. Unscrew or
tighten the cable tension screw at the lever or at the rear of the derailer so that each lever position corresponds to a cog:
=> If the chain does not move down every time you shift the lever:
• loosen the cable by turning the cable tension adjusting screw clockwise.
=> If the chain does not move up every time you shift the lever.
• tighten the cable up by turning the cable tension adjusting screw anticlockwise.
Derailer end
stop
Cable bolt
washer
Frame bolt
Frame bolt
H stop screw
L stop screw
3 - Adjusting derailer tension
Chain guide outer
plate
Chain
OUTER STOP ADJUSTING
SCREW
INNER STOP ADJUSTING
SCREW
Chain guide inner
plate
Chain
Summary of Contents for Bicycle
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