Piper Cherokee LANCE, Service Manual

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PIPER CHEROKEE SIX / LANCE SERVICE MANUAL
03/27/08 V - SURFACE CONTROLS
1H5
c. Adjust primary and balance cable tension as given in Table V-II, by the following procedure:
1. Remove the floor panel that is located directly aft of the main spar by removing the center
seats, seat belt attachments and the screws securing the panel.
2. Loosen the connecting bolts of the idler cross-over sprockets at the control tee bar to allow the
chain to fit snug around the control wheel sprockets and over the idler sprockets.
3. Ascertain that both bellcranks are at neutral position.
4. Adjust the turnbuckles, located in the floor opening aft of the main spar, of the primary and
balance cables to proper cable tension and maintain neutral-center position of the control
wheels. To obtain neutral position of both control wheels, it may also be necessary to adjust
the roller chain turnbuckle located between the control wheel sprockets. During adjustment
obtain a little more tension on the primary control cables to hold the bellcranks in neutral
against the rigging tools, finishing with even tension on all cables.
5. Tighten the bolts to secure the idler cross-over sprockets.
6. Remove the aileron bellcrank rigging tool from each wing.
d. Check the ailerons for correct travel from neutral per dimensions given in Table V-II, by the
following procedure:
1. Center the bubble of a protractor over the surface of an aileron at neutral position and note the
reading.
2. Move the aileron full up and down, and check the degree of travel for each direction. The
degree of travel on the protractor is determined by taking the difference between the protractor
reading at neutral and up, and neutral and down. The bubble must be centered at each reading.
3. Should the travel not be correct, the travel may be set by rotating the bellcrank stops in or out.
Stops are located in the wing attached to the rib that is adjacent to the aileron bellcrank.
4. Repeat this procedure for the other aileron.
e. Check the bellcrank stops to assure that the bellcrank contact is made simultaneously, but still have
cushion before contacting the control wheel stops. Maintain .030 to .040 clearance between
sprocket pin and adjustable stop bolts on models having adjustable tee bar stops.
f. Check control operation, and bolts and turnbuckles for safety.
g. Install access plates and panels.
h. Should an out-of-trim condition persist despite all the rigging corrections that can be made, there is
a possibility that the trailing edge of the aileron has been used to move the aircraft forward. This
can result in a slight bulging of the aileron contour at the trailing edge which will cause an out-of-
rig condition that is very difficult to correct.