Piper COMANCHE PA-24-180 Service Manual page 123

PIPER COMANCHE SERVICE MANUAL
5 Remove the center balance weight and all attaching hardware (nut. bolts, washers and balance
plates) with the exception of the control cable attaching hardware, and weight the removed items The
weight limits of the combined removed items are 3 pounds 15 ounces maximum to 3 pounds 8 ounces
minimum Should these limits be exceeded, it will be necessary to locate the problem and correct it prior to
flight
NOTE
Problems may arise from previous improper maintenance and or
repairs. such as excessive use of putty. wrong components. etc
CAUTION
Upon completion of installations and adjustments. before any
flight tests. check that all controls are hooked up and rigged
properly. turnbuckles. bolts, etc. are safetied and panels and
plates are secured
4-51 Checking And Balancing Rudder. (Refer to Figure 4-7c.) The rudder must be checked to assure it is
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
NOTE
The PA-24-400 rudder is properly balanced as long as head weight is
installed. No further balancing is required. Should repainting be
required. it will be necessary to remove all old paint prior to applying
the new paint to insure staying within the balance limits.
a. Remove the rudder from the airplane. in accordance with instructions given in Paragraph 4-13 The
rudder must be complete including rudder control horn. balance weights. tip. etc
b. Insert bolts in the two end hinges and place the complete rudder assembly on a suitable balance
stand, as shown in Figure 4-7c
c. Position an accurately calibrated scale below the trailing edge of the rudder, as shown 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 4-7c
f Multiply the weight (obtained per paragraph d ) by the distance (obtained per paragraph e)
g The product (moment) should be in accordance with specifications given for the specific model
aircraft being serviced
REVISED: 4/10/81
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STRUCTURE
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