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Updated 23/05/07 RAOM0507 Apollo Bicycle Company Pty. Ltd. ABN: 60 001 914 469
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Unlike the single speed freewheel bike, coaster hub brake or 3-speed hub bicycle the
chains on derailleur geared bicycles are automatically tensioned by the rear derailleur.
Consequently, manual adjustment of the chain is not necessary on derailleur geared
bicycles. The process for removing and replacing chains or altering the length of the
chain on a derailleur geared bicycle, also differs from that used on the other bike types.
The chains on derailleur geared bicycles are narrower, meaning a special tool is needed
to complete any of the procedures.
To remove a chain on a derailleur geared bicycle:
- Fit the rivet tool so that the punch pin
is centred over any one of the chain
rivets.
- Push the rivet almost all the way out,
then back out the punch and remove
the tool.
- Holding the chain on both sides
of the punched rivet, bend it slightly
to release the link from the rivet.
To install a chain on a derailleur geared
bicycle:
- Thread the chain around the chainwheel, rear sprocket and derailleur cage
with the rivet facing away from the bicycle.
- Bring the two ends together within the special tool and punch the rivet into place.
Take care not to push rivet too far through the side plate. Derailleur geared bicycles
can now be fitted with some new types of chains that do not require special tools to
remove or replace. Instead, a new, special, disposable connecting link is used every
time you disassemble the chain. For further details on these particular chains, including
installation guidelines, refer to the manufacturer’s specific instructions.
Freewheel
Inspection and Lubrication
To prevent premature wear, the freewheel must be kept clean and well lubricated. Any
accumulated dirt should be brushed from the freewheel and the component cleaned with
kerosene or degreaser. Lubricate the freewheel whenever the chain is oiled. Any excess
oil should be removed.
To ensure the freewheel is operating appropriately, remove the chain from the freewheel
and spin it with your hand. If a grinding noise is audible or if the freewheel suddenly stops
after spinning it, adjustment or replacement may be required. Such tasks are best referred
to your professional bicycle mechanic, as they are quite complex and require special tools.
Note: Generally, whenever the chain needs to be replaced the freewheel should
also be changed.
Chain Rivet Tool