Ultra motor A2B Metro, Service Manual

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NOTE
Press the rivet the minimum distance need-
ed to separate the chain and stop. Do not
drive the rivet completely from the inner
plate on the inboard side of the chain. The
chain can be separated once the rivet
extends 0.5 to 1.0 mm into the inside of the
inner chain plate. See
Figure 6 .
5. Turn the tool handle five full turns, and
remove the tool.
6. Flex the chain laterally as needed to
separate the links.
7. Carefully pull the end with the rivet, and
remove the chain from the lower idler,
derailleur, and chainring.
Cleaning
1. Soak the chain in solvent.
2. Clean both side of the chain with a stiff
brush.
3. Exercise caution when brushing the roll-
ers, but make sure the rollers are com-
pletely clean.
4. Rinse the chain in clean solvent, and dry
it with compressed air.
Removal
A chain breaker (Park CT-3) is needed for
removing and installing the chain.
1. Shift the derailleur and move the chain
to the smallest cog (high gear). Note how
the chain passes over the upper idler (A,
Figure 5 ) and through the lower idler (B).
The chain must be routed along the same
path during installation.
2. Inspect the drive pin of the chain break-
er. Replace the tool if the pin is not
straight.
CAUTION
Some chain breakers have two cradles.
Use cradle furthest from the guide pin
when removing or installing the chain. Use
the cradle closest to the guide pin when
adjusting a tight link. Always use the cor-
rect cradle for the task.
3. Install the chain breaker onto a link in
the chain’s lower run. Fully seat the rollers
in the tool’s cradle, and center the drive
pin on a chain rivet.
4. Turn the tool handle until the drive pin
just touches the rivet.
Chapter Five
5-2
FIG. 3
A
FIG. 5
B
FIG. 6
Insufficient
bend
Insufficient
bend
FIG. 4