Piper SEMINOLE PA-44-180 Maintenance Manual Download

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INSTALLATION OF WING. (Refer to Figure 57-1.)

1. Ascertain that the fuselage is positioned solidly on a support cradle.
2. Place the wing in position for installation, with the spar end a few inches from the side of the fuselage and

set on trestles.

3. Prepare the various electrical leads, fuel lines, control cables, and power plant controls for insertion into the

wing or fuselage when the wing is eased into place.

4. Slide the wing into position on the fuselage.
5. Install the main spar bolts in accordance with the information given in Figure 57-1, Sketches C and D.
6. Install the bolt, washers, and nut that attaches the front spar and fuselage fitting. A minimum of one washer

is required under the bolt head; then add washers as needed to leave a maximum of one and one-half threads
visible or a minimum of bolt chamfer exposed. (Refer to Sketch A, Section A-A of Figure 57-1.)

7. Install the bolt, washers, and nut that attaches the rear spar and fuselage fitting. It is acceptable to have the

faces of the fittings against each other in which case the AN960-616L washer should be used under the bolt
head. The AN960-616 washer may be added under the nut when not used as a shim. (Refer to Sketch B,
Section B-B of Figure 57-1.) Check to insure that no threads are bearing on the forward plate prior to
installing the nut.

8. Torque the main spar bolts in accordance with specifications given in the bolt legend of Figure 57-1 . The

forward spar attachment bolt should be torqued to a maximum of 70 to 90 inch-pounds. The rear spar
attachment bolt should be torqued to a maximum of 360-390 inch-pounds.

9. Install the wing jacks and tail support to the tail skid with approximately 250 pounds of ballast on the base

of the tail support. Remove the fuselage cradle and wing supports.

10. If the left wing was removed, it is necessary that the pitot and static tubes be connected at the elbows

located within the cockpit at the wing butt line. Replace or install clamps where found necessary.

11. Connect the hydraulic brake line onto the fitting located within the cockpit at the leading edge of the wing

and the landing gear hydraulic lines at the fittings within the fuselage aft of the spar.

12. Connect the leads to the appropriate posts on the terminal strip and install the washers and nuts. (For

assistance in connecting the electrical leads, refer to the electrical schematics in Chapter 91.) Place the
clamps along the electrical harness to secure it in position and install the terminal strip dust cover.

13. Connect the fuel line at the fitting located inside the wing, by reaching through the access panel on the

forward inboard portion of the wheel well.

14. Connect the aileron balance and control cables at the turnbuckles that are located within the fuselage aft of

the spar. After the left balance cable has been inserted through the bracket assembly and connected, install a
cotter pin cable guard into the hole that is provided in the bracket assembly.

Piper SEMINOLE PA-44-180, Maintenance Manual

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