91
Other components
5. Adjust the handlebar direction to position the handlebars at
90° to the front wheel
(see Fig.
“Handlebar direction”
).
6. Tighten the two screws on the handlebar stem, while still tak-
ing the torques into consideration.
7. Replace the cap on the handlebar stem.
12.1.3.6
Quill handlebar stem
1. Pull the cap on the top of the quill stem upwards
(see Fig.
“Handlebar stems”
, right).
2.
Unscrew the internal screw with 1 to 2 turns in an anti-clock-
wise direction.
3. Adjust the handlebar direction to position the handlebars at
90° to the front wheel (see Fig.
“Handlebar direction”
).
4. Turn the interior screw in a clockwise direction, while still tak-
ing the torques into consideration.
5. Replace the cap on the quill handlebar stem.
12.1.3.7
adjusting the head bearing
You will need two open-ended spanners or two headset spanners;
the spanner size may vary between individual bicycle models.
1. Place the bicycle in an upright position.
2.
Loosen the clamping nuts.
3. Tighten the bearing until there is no play in the head bearing.
• Engage the front wheel brake and move the bicycle back-
wards and forwards.
•
Check whether there is any play in the head bearing.
•
Lift the bicycle and check to see if the front wheel turns
towards the left or right of its own accord if you hold the
frame at an angle.
If no amount of play can be detected in the head bearing when
checked and if the front wheel turns to the left or right as the frame
is moved, this means that the head bearing is correctly adjusted.
4. Re-tighten the counter nuts, taking into account the torques;
avoid turning the bearing with the nut by holding it in position
with another spanner.
5.
Check the handlebar direction after adjusting the steering
head bearing (see Fig.
“Handlebar direction”
).
Fig.: Head bearing
1 Counter nut
2 Bearing
1
2
