Piper PA-34-200T Seneca II, Service Manual

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PIPER SENECA II SERVICE MANUAL
01/01/09 V - SURFACE CONTROLS
1H12A
f. Set the flap control cable tension (handle next
to floor, 0 degrees) as given in Table V-I at
the turnbuckle that is attached to the lower
end of the flap handle in the floor tunnel. To
do this and if not previously removed,
remove the flap handle cover and enough
tunnel carpet to remove the tunnel cover just
aft of the handle. Adjust and resafety the
turnbuckle.
NOTE: Do not rotate the torque tube while
retensioning the cable or tighten
tight enough to allow tube to be
pulled away from its stops.
g. To check up-neutral position of the flaps,
place a flap rigging tool, as shown in Figure
5-15, against the underside of the wing and
flap as close as possible to the outboard end
of the flap without contacting any rivets. The
tool must be positioned parallel with the wing ribs with the aft end of the tool even with the trailing
edge of the flap. (This tool may be fabricated from dimensions given in Figure 5-17.)
h. With the flap control rod connected between the torque tube crank arm and the flap, check that the
surface of the wing contacts the tool at its forward surface and at the spacer, and the aft end of the
flap contacts the aft end of the tool. The flap is neutral at this position.
i. Should the three points not contact, loosen the jam nuts on each end of the control rod and rotate
the rod until the three points contact. Apply a slight up pressure (enough to take slack out of
linkage) against the trailing edge of the flap while making this adjustment. After adjustment,
retighten the jam nuts.
j. Check and adjust the other flap in a like manner.
NOTE: In the event of wing heaviness during flight, the flap on the side of the heavy wing can be
adjusted down from neutral to remedy this condition by lengthening the control rod. Check
the inspection hole in each rod end to ascertain that there are sufficient threads remaining
and a wire cannot be inserted through these holes. Do not raise the flap of the other wing
above neutral.
k. Check the flap for full down travel to the degrees required in Table V-I. Should the travel not be as
that required, readjust the torque tube stop screw in or out as required. After readjusting the screw, it
will be necessary to review Steps d thru j.
1. Check operation of the flap and flap handle ratchet mechanism.
m. Install access plates and panels.
Figure 5-15. Flap Rigging Tool