Gear Shifter; Traditional Drivetrain - Orbea ALMA Manuel D'instructions Et D'entretien

- Put one hand on the crank arm and one on the seatpost; try to move the crank arm towards
and against the seatpost. If it is loose, it needs to be checked by your dealer.
- If, when turning the chainrings, you notice that they are loose or you hear a strange noise in
the bearings, they need to be checked by your dealer.
- Clean the chainrings and inspect them for any damage. If any tooth is bent or damaged, the
chainring must be replaced by your authorized dealer.
Check the chain for wear every three months. Every complete link of a chain measures one
inch (25.4mm). If twelve links measure more than 30.8cm, the chain must be replaced. With
a properly maintained road bicycle, the chain generally lasts between 1600 and 2400 km. The
service life for mountain bikes is slightly less. Special tools and know-how are required to chan-
ge the chain. Therefore, you should take your bike to your authorized dealer.
Adjustment
Adjusting the drivetrain (cassette, chain, chainring and pedals) must be performed by an autho-
rized dealer, since it requires specific tools and special skills.
Adjusting the chain on a single speed bicycle
Gradually loosen the nuts of the wheel hub.
In single-speed bikes, or bicycles with internal hub shifters, chain tension has to be adjusted so
that, halfway between the wheel hub and bottom bracket, there is 1cm of slack in the chain.
Tighten the nuts until the wheel is uniformly secured.
Lubrication and cleaning
Once a month, clean and lubricate the cassette and the chain. You should always keep a cloth
behind the chain so that oil does not drip on the rest of the bicycle. Once the chain is lubrica-
ted, clean any excess off the chain.
Do not use gasoline to clean the cassette. It is highly flammable and leaves a thin film of grease
after it evaporates. Clean the cassette with a degreasing fluid and brush.
Once a year, lubricate the pedal bearings, the clipless pedal mechanism and the part of the
pedal that screws into the crank arms. Some bearings are sealed and do not require lubrica-
tion. Lubricating the bearings requires specific tools and special know-how, and should only be
performed by an authorized dealer.
Note: The left and right pedals have a mark stamped on the corner indicating the side to which
they pertain.
Greasing the thread of the pedals
- Remove the pedals; spin the right pedal counterclockwise and the left pedal clockwise.
- Apply a thin layer of lubricant.
- Install the pedals on the corresponding side
- Tighten the pedals until they are securely connected to the crank arms.

5. GEAR SHIFTER

TRADITIONAL DRIVETRAIN

Attachment of the rear derailleur to the frame: 6-8Nm
Attachment of the front derailleur to the frame: 5-6Nm
Attachment of the shifting levers to the handlebar: 6-8Nm
This gear shifting system changes the chainring and cassette by derailing the chain, removing it
from one cog or chainring to another.
Inspection
The following terms will be used in this section:
Upshifting: shifting to a gear that is harder to pedal: a larger chainring or a smaller cog
Downshifting: shifting to a gear that is easier to pedal: a smaller chainring or a larger cog
Proper adjustment of the gear shifting system will make it silent. If there is temporary noise
every time you shift, the shifter may need adjustment. If you cannot adjust it or the noise increa-
ses, take the bike to your authorized dealer.
Once a month, check that the cables are not twisted, rusted, have any broken wires or frayed
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