Cessna 177 SERIES Service Manual page 318

BALANCING MANDREL
:
000 0 00j 0 0 0 0
-- KNIFE EDGE
ALs/
^ ^ .
1
61/2"'
Place directly over hinge
After locating trailing edge line of control surface.
support, balance by adding
washers and/or nuts. .
RUDDER
Adjust vertically until beam
parallels control surface
BALANCING / chord line (except ailerons).
MANDREL ///
90O
A balance in this range is "underbalance."
A balance in this range is "overbalance. "-
Refer to chart for correct range of under-
balance for a specific control surface.
Set control surface on balancing mandrels,
with hinge bolts resting on mandrels. Posi-
BALANCING MANDREL-
tion balancing beam with mid-point directly
over and 90
°
to, hinge line.
Figure 18-3.
Control Surface Balancing (Sheet 2 of 4)
18-10