Van's Aircraft RV-12, Maintenance Manual

Page: 85 / 217

Rev. 6
5-29
TIRE ASSEM. BALANCING PROCEDURE
● NOTE:I
T IS NOT A MAINTENANCE REQUIREMENT THAT THE
N
OSE OR
M
AIN
W
HEEL
/T
IRE
A
SSEMBLIES ON THE
RV-12
BE BALANCED
,
BECAUSE OF THE
RELATIVELY LOW TAKEOFF AND LANDING SPEED
. S
HOULD A VIBRATION BE DETECTED
THAT IS SUSPECTED TO BE CAUSED BY A WHEEL
/
TIRE IMBALANCE
,
THIS PROCEDURE
MAY BE USED
.
1. Remove the suspected out of balance wheel/tire assembly(s) from the aircraft.
2. Mount the Wheel/Tire assy. in a static balance test stand and allow the assy. to
rotate to the heavy side down position.
3. A.) Main Wheel assy. - Use tape to temporarily add stick on wheel weights
(obtain from a local automotive store commonly available wheel weights with
self-adhesive) to the outboard wheel flange, opposite the heavy point of the
wheel, until the assy. can be moved to any rotational position without it rotating.
Mark the position of the wheel weights and then remove them. Thoroughly clean
the area of the wheel flange where the wheel weights will be located. Remove
the protective backing and press the wheel weights in place on the wheel flange.
B.) Nose Wheel assy. - Use tape to temporarily add stick on wheel weights to the
interior area of the nose wheel (working through the lightening holes in the
wheel). If the proper weight location coincides with one of the three wheel
through bolts, distribute the weight, as close as possible, to each side of the
through bolt. Thoroughly clean the interior area of the wheel where the wheel
weights will be located. Remove the protective backing and press the wheel
weights in place on the interior area of the wheel.
4. Re-install the wheel assy. on the aircraft.