3. Set the derailleur’s outward limit as fol-
lows:
a. Shift the derailleur so the chain sits on
the smallest cog (high gear).
b. Stand behind the derailleur, and check
the position of the guide pulley. The pulley
should align with the smallest cog as shown
in
Figure 5
.
c. If necessary, use the H-screw to adjust
the outward limit. Tighten the H-screw to
move the derailleur inward; loosen the
H-screw to move it outward.
4. Set the derailleur’s inward limit as fol-
lows:
a. Shift the derailleur so the chain rests on
the largest cog (low gear).
b. Stand behind the derailleur, and check
the position of the guide pulley. The pulley
should align with the largest cog as shown
in
Figure 6
.
c. If necessary, use the L-screw to adjust
the inward limit. Tighten the L-screw to
move the derailleur outward; loosen the
L-screw to move it inward.
Setting Cable Tension
A fourth–hand tool (Park Tool BT-2) is
required to perform this procedure
1. Loosen the derailleur anchor bolt (B,
Figure 2
).
2. Turn the derailleur barrel adjuster (C,
Figure 2
) to its fully-in position, and then
back out the adjuster three full turns.
3. Turn the shifter barrel adjuster (C,
Figure
1
) to its fully-in position, and then back it
out one full turn.
NOTE
Do not pull the inner wire so much that the
derailleur begins to move.
4. Use a fourth-hand tool to pull the slack
out of the inner wire.
5. Torque the derailleur anchor bolt (B,
Figure 2
) to the specification in Table 5.
Check that the inner wire still sits within the
pinch-mechanism groove.
b. Loosen the anchor bolt (B,
Figure 2
).
Use the fourth-hand tool to pull the slack
from the inner wire.
c. Torque the derailleur anchor bolt to the
specification in Table 5.
d. Check that the inner cable still sits
within the groove in the pinch-mechanism
plate.
2. Set the derailleur as close as possible to
the cogset by performing the following.
a. Shift the chain to the largest cog (low
gear).
b. Completely loosen the B-screw.
c. Back-pedal, and check for bouncing
at the guide pulley (
Figure 11
). The B-screw
is too loose if bouncing is noticed.
d. Tighten the B-screw (
Figure 10
) one
turn, and repeat the bounce check.
Chapter Four
4-4
FIG. 9
Tab
Tab
Pinch plate
Correct
Incorrect
FIG. 10
Mounting bolt
Tension pulley
Guide
pulley
B-Screw
FIG. 11
Bouncing
Summary of Contents for A2B Metro
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