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Inspection of the Bearings
Maintenance
Frequently check the bearings of the bicycle. Lubricate the bearings according to the
lubrication chart or any time they do not pass the following tests:
Head Tube Bearings
The fork should turn freely and smoothly at all times. With the front wheel off the
ground, you should not be able to move the fork up, down, or side-to-side in the head
tube.
Crank Bearings
The crank should turn freely and smoothly at all times and the front sprockets should
not be loose on the crank. You should not be able to move the pedal end of the crank
from side-to-side.
Wheel Bearings
Lift each end of the bicycle off the ground and slowly spin the raised wheel by hand.
The bearings are correctly adjusted if:
• The wheel spins freely and easily.
•
The weight of the spoke reflector, when you put it toward the front or rear of the
bicycle, causes the wheel to spin back and forth several times.
• There is no side-to-side movement at the wheel rim when you push it to the side
with light force.
Gyro Bearings
With the front wheel off the ground the Gyro Handlebar/Stem/Wheel system should
rotate freely and smoothly 360 degrees without binding or hitting any cables.
Maintenance and Service
