Cessna 177 SERIES Service Manual page 319

AILERONS
BALANCING MANDRE L
Streamline trim tab before
balancing aileron.
DETAIL
A-A
--
_H
LINE
., . HORIZONTAL PLANE
.................................................................. ......................... . ............................
Balance aileron inverted, with trailing edge
at point opposite cut-out for middle hinge
.66" below hinge line horizontal plane.
Refer to chart for correct
range of underbalance.
Figure 18-3. Control Surface Balancing (Sheet 3 of 4)
18-11