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10
Aston Magnetic Levitation Wheel Balancer AWB-139ML User’s Manual
1
）
Make sure the pressure cup is attached to the quick hub wing
nut.
2
）
Select the centering-cone that best fits the center hole in the
rim. Slide the centering-cone over the thread shaft with the
larger diameter towards the flange, small diameter joining the
center hole of the rim.
3
）
Lift the wheel onto the thread shaft and center it onto the
centering-cone. Make sure to position the INNER side of the
wheel rim against the flange and cone.
4
）
Mount the quick hub wing nut with pressure cup onto the
thread of the spin shaft and tighten it firmly against the rim.
The quick hub wing nut should engage the threads for at least
three full turns.
NOTE
：
Use the nylon spacer between rim and pressure
cup to protect custom wheel finishes.
1.4.3.
FRONT CENTERING-CONE MOUNTING
A wheel should only be centered with this method when the
type of the INNER surface of the rim is not convenient to
provide an accurate centering seat.
1
）
Make sure the pressure cup is
NOT
attached to the
quick hub wing nut.
2
）
Lift the wheel onto the threaded spin shaft and slide it
back against the shaft flange. Make sure to position the
INNER
side of the wheel rim against the flange.
3
）
Slide the centering-cone onto the shaft into the middle of the
wheel rim. It is necessary to lift the wheel to get the centering-
cone placed in the center hole.
4
）
Fit the quick hub wing nut without pressure cup onto
the spin shaft. Tighten it securely against the centering-
cone. The hub wing nut must engage the threads for at
least three full turns.
