Gary Fisher 2004 gary fisher bicycles ユーザーズマニュアル
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CHAPTER THREE
Inspection, Adjustment & Lubrication
Introduction
Instead of operating by hand, coaster brakes are
actuated with the legs by pedalling the crankarms
backwards. The chain transmits the motion of
the crankarms to the rear hub. The braking
mechanism is actually inside the rear hub. This
system consists of several parts:
• Rear hub
• Chain and crankset
• Rear hub
• Chain and crankset
Inspection
Once a month
check that the brake arm attach-
ment bolt is tight and that the brake strap is securely fastened
to the chainstay (Figure 3.7.17).
Once a month, or whenever the wheel is installed
,
check the chain tension. Without proper tension, the chain can
come off, and the brake will not work. See
Drivetrain
on pages
32-34 for Inspection and Adjustment of chain tension.
Adjustment
See
Drivetrain
on pages 32-34 for Adjustment procedures.
Rear wheel removal
To unbolt the brake arm
1. Loosen and remove the brake arm attachment bolt
(Figure 3.7.17).
To unbolt the axle from the frame
When loosening and tightening the axle nuts, do so gradually, in small
increments, to prevent effecting the bearing hub adjustment.
1. Slightly loosen the axle nut on one side of the hub by about
1/4 turn.
2. Slightly loosen the axle nut on the other side of the hub
about 1/4 turn.
3. Continue loosening the axle nuts in small increments
until both nuts are loose enough to slide the hub from the
dropouts.
With bikes equipped with training wheels, there is a second set of axle
nuts under the training wheel brackets. Loosen and remove them in thee
same manner.
Figure 3.7.17 Coaster brake
parts
parts
Brake
strap
Brake arm
attachment
bolt
Coaster brakes
Brake Systems