Gary Fisher 2004 gary fisher bicycles Manual Do Utilizador
32
33
CHAPTER THREE
Inspection, Adjustment & Lubrication
DRIVETRAIN:
PEDALS, CRANK, CHAIN, AND CASSETTE
The drivetrain (Figure 3.3.1) consists
of the parts of the bicycle that transmit
power to the rear wheel:
• Pedals (and toe-clip assemblies on
• Pedals (and toe-clip assemblies on
some models)
• Crankset- left and right crank arms,
chainring(s), and bottom bracket
(the axle and bearings on which the
crankset rotates).
• Chain
Cassette
Chain
Pedal
Chainring
Crank bolt
Figure 3.3.1 Parts of the bicycle drivetrain
Drivetrain: Pedals, Crank, Chain, and Cassette
• Cassette, or freewheel.
This section explains how to inspect, adjust, and lubricate your
drivetrain. For bikes equipped with a shift system inside the
rear hub, also refer to the section
Internal Shift Systems
.
Inspection
When the drivetrain is working properly, shifting is easy, your
bike is quiet, and its efficiency can reach its maximum.
Once a month
check that the chain and cassette are clean,
free of rust, and properly oiled. All links of the chain should pivot
smoothly and without squeaking, and no links of the chain should
be deformed. Take off the rear wheel, and rotate the cassette in
your hands. If you hear a grinding noise or your cassette stops
immediately after spinning it, the cassette may need adjustment or
replacement; take your bicycle to your Fisher dealer for service.
Once a month on a bike with a chainguard
,
check that the chainguard is firmly attached and
correctly aligned. Push the chainguard side-to-
side, and tap on it. Lift the rear wheel off the
ground and rotate the crankarms, and listen for
any sounds which might indicate the crank or
chain is rubbing on the chainguard. Re-align the
chainguard so that it does not move, rattle, or rub,
and tighten the attachment hardware.
Every 3 months
inspect your pedals and
toe-clips. Make sure your toe-clips are securely
tightened to the pedal, and the pedal reflectors
are clean and securely in place. Tighten the pedals
into the crank arms; turn the right pedal clockwise, but the left
pedal counter-clockwise (Figure 3.3.2):
• Pedals: 350-380 lb•in (40.2-42.9 Nm).
To check that the pedal bearings are properly adjusted,
rotate and move the pedals right to left and up and down
Figure 3.3.2 Tightening pedals