50
HP
Velotechnik
Head set
Adjusting the head set play
The head set bearing supports the front fork
in the frame. It has to be adjusted so that the
fork with the front wheel turns easily without
showing play.
To check the bearing play pull the front brake
and grab with your other hand the upper
bearing cup. Now move your bicycle back and
forth. If the steering head bearing has play the
upper cup moves noticeably in contrast to the
fixed part. In that case undo the clamping
screw(s) and tighten the screw in the cap a bit
more.
To check whether the front wheel turns
smoothly lift your bicycle at the frame so that
the front wheel moves freely above the
ground. Lean your bike to the side. Now the
handlebars should move smoothly immediately.
When you hold the frame straight and push
the handlebars slightly they should move
smoothly from their middle position. If the
bearing is too tight undo the clamping screws
at the side and loosen the hex-headed screw
in the cap a little bit by turning it counter
clockwise. Now move slightly move the stem
upwards by swinging it a little bit.
Above seat steering:
After you have adjusted
the bearing play check if the stem is adjusted
in a parallel position to the front wheel and
tighten the two clamping screws alternately
with 8–10 Nm. Check the clamping by trying
to turn the stem against the front wheel.
Under seat steering:
Tighten the clamping
screw M5 SW4 of the headset clamp with 4–6
Nm.
Check whether the handlebars move freely
without unnormally touching the frame or the
seat.
Danger!
The hex-headed screw in the cap
adjusts the play of the steering head bearing.
This screw does not help to clamp the stem
tightly to the steerer tube. It does not se-
cure it against turning.Take care that both
clamping screws on the side are tightened as
prescribed after you have finished your
works at the stem. Otherwise the stem may
turn while riding and cause an accident.