Marzocchi TENNECO Manual Del Usuario página 24

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3.4.4 Wheel installation on a fork with QR20 quick release axle
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W !
ARNING
Always check the cleanness of the fork dropouts and remove
the possible dirt and mud before installing the wheel. Dirt
can compromise the correct functioning of the axle and the
fastening safety. An incorrect wheelfastening can cause
serious accidents, even fatal ones. Do not tighten the axle
without having put the hub between the fork dropouts fi rst.
Do not ever use other tools during the tightening of the wheel
axle. An excessive tightening can damage the axle and the
fork.
The wheel-axle of the QR20 system allows, in a very quick way
and without the use of tools, assembling and disassembling the
front wheel in the fork.
The wheel locking procedure is as simple as QR for standard wheels
with 9mm axle with eccentric lever. The installation procedure is
very similar as well.
For optimum fork performance, please follow the instructions below
when installing the wheel:
• Place the wheel hub between the two fork dropouts.
• Align the wheel hub on the fork dropouts (see
• Install the axle through the right wheel axle dropout. (see
of Picture 5).
• Pass through the hole in the centre of the hub until it stops against
the left wheel axle dropout.
The quick release lever, fully opened, allows the axle screwing and
unscrewing on the left wheel axle dropout.
• Keep the quick release lever fully opened and rotate the axle
clockwise (see 5B of Picture 5) till resistance to the screwing
is perceived.
• Close the lever slightly in order to position it in the direction
desired for the closing.
• By means of the quick release lever installed in the end of the
axle, lock the lever (see 5C of Picture 5); this way, the wheel will
be correctly fastened to the fork.
The lever must cause resistance during the rotation for the closing
in order to have a correct fastening. When the closing is fi nished, a
slight mark of the lever can be noticed on one's hand.
Open the quick release lever in order to increase tension and screw
futher on the axle, rotating clockwise, till the correct tension during
the closing is felt.
If the lever does not manage to rotate completely till the closing
position, it means that the axle has been screwed on the fork
dropout too much. In this case tension must be reduced, to do
this screw the axle slightly, rotating it anticlockwise, till the correct
tension during the closing is felt.
• Check that the release lever is in a position that assures the
correct fastening of the axle, and that it is in a position that it is not
subject to collisions during the use (see 5C of Picture 5).
• Check for the proper fork-wheel alignment. To do this, begin by
fully compressing the fork a few times. The wheel should not
make contact with, or come close to any portion of the fork. Then
lift the front of the bicycle and spin the wheel a few times to verify
the correct alignment with the disk brake. The wheel should not
wobble from side to side or up and down. Check the owner's
manual of the brake system for the proper specifi cations.
Do not rotate or change the lever position after having closed the
quick release lever. The shift of the fastening lever can compromise
the wheel fastening safety causing the axle loosening.
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5A of Picture 5).
5A
Picture 5 - Wheel installation on a fork with QR20 quick release axle
5A
5B
5C