Rudder Checking And Balancing - Piper PA-24 Comanche Service Manual

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PIPER COMA'CHE SERVICE
MA~rAL
5. Rernov e the center balance weight and all attaching hardware (nut. bolt .... washers and balance
plates) with the exception of the control cable attaching hardware. and weight the removed item.... The
weight limits of the combined
rernov cd
items are
~
pounds
15
ounces maximum to
~
pounds
l ' < l)UnCI.'S
minimum. Should thl.'se limits be exceeded. it will be necessary to locate the problem and correct it prior
to
flight.
Problems may arise from previous improper maintenance and or
repairs.
such
as
excessive
use of putty. wrong components. etc.
CAtTlO'
t
'pon completion of installations and adjustments. before any
flight
te ..
t:-.. check that all controls are hooked up and rigged
properly. turnbuck lcv, bolts. etc .. are safetied and panels and
plates are ..ccured.
4-51. Checking And Balancing Rudder, (Refer to Figure 4-7c.) The rudder must be checked
to
assure It i. . .
properly
balanced whenever it has been repaired. repainted. or altered in any manner. The balancing
requirement of the rudder must be checked with the complete assembly removed from the airplane.
'OTE
The PA-24-400 rudder is properly balanced as long as head weight is
installed.
'0
further balancing is required. Should repainting he
required. it \\ ill be necessary to remove all old paint prior to applying
the new paint
to
insure staying within the balance limits.
a. Remme: the rudder from the airplane. in accordance with instructions given in Paragraph 4-1.1. The
rudder must he complete including rudder control horn. balance weights. tip. etc.
b.
Insert
bolts in the two end hinge... and place the complete rudder assembly on a ..unable balance
stand. as shown in Figure 4-7c.
c. Po..ition an accurately calibrated scale below the trailing edge of the rudder. as show n in Figure
4-
'7c.
d. With the centerline of the rudder
level.
obtain a reading on the scale. Subtract the weight of any
support used between the trailing edge of the rudder and the scale.
e. Measure the distance (in inches) between the point at which the support on the scale contacts the
rudder surface and the centerline of the rudder hinge. This is Measurement D on Figure
4~
Tc,
f.
\1ultipl~
the weight (obtained per paragraph d.) by the distance (obtained per paragraph e.].
g. The product
I
moment) should be in accordance with specifications given for the specific model
aircraft heing ...erviced.
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RE\'ISED: 4/10/81
IF3
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