Piper PA-44-180 SEMINOLE Maintenance Manual page 284

4. Check cable tension and adjust if required to remove all slack. Do not tighten cable to the point that
the stop screw comes off the stop.
5. Place a 0.125 of an inch thick spacer between the right hand stop screw and stop fitting. With flaps
installed and control rods connected. determine that, when down pressure is applied on top of the flap,
it will not cause the flap to come down. If the flap extends (comes down under pressure), turn the stop
screws out a few turns until the flap remains in the up-lock position with the spacer inserted. Adjust
both stop screws, tighten jam nuts, and remove the spacer block.
6. To check the up-neutral position of the flaps place a flap rigging tool as shown in Figure 27-27 against
the underside of the wing and flap as close as possible to the outboard end of the flap without contact-
ing any rivets. ( Refer to Chapter 91 for dimensions to fabricate this tool.) 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.
7. With the flap control rods connected between the torque tube crank arm and flaps; check that the sur-
face 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. Maintain a light up pressure on the underside of the flap to remove
slack in the linkage while making this check.
8. If required adjust each flap push rod so that the chord line of the flap forms a zero degree ± 1° angle
with the wing chord at the outboard end of the flap. This is the neutral position.
To remedy wing heaviness during flight, adjust the flap on the
side of the heavy wing down from neutral by lengthening the
control rod. Check the inspection hole in each rod end to ensure
that there are sufficient threads remaining and a wire cannot be
inserted through the holes. Do not raise the flap of the other
wing above neutral.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
Figure 27-26. Flap Step Adjustment
— NOTE —
1L22
27-50-02
Page 27-44
Revised: June 20, 1995