Cessna 150J - Wings and Empennage

SECTION 4
WINGS AND EMPENNAGE
TABLE OF CONTENTS
Page
WINGS AND EMPENNAGE
Wings
.....
Description .
Removal.
Repair ..
Installation
Adjustment
Wing Struts. .
Description.
Removal and Installation
4-1. WINGS AND EMPENNAGE.
4-2. WINGS. (Refer to figure 4-1.)
4-1
4-1
4-1
4-1
4-1
4-1
4-3
4-3
4-3
4-3
4-3. DESCRIPTION. Each all-metal wing is a semi-
cantilever, semimonocoque type, with two main spars
and suitable ribs for the attachment of the skin. Skin
panels are riveted to ribs, spars and stringers to com-
plete the structure. An all-metal, piano-hinged ail-
eron, flap and a detachable wing tip are mounted on
each wing assembly. Asingle metal fuel tank is moun-
ted between the wing spars at the inboard end of each
wing. The leading edge of the left wing may be equip-
ped with landing and taxi lights (thru 1970 Models).
Colored navigation lights are mounted at each wing tip.
4-4. REMOVAL. Wing removal is most easily accom-
plished if four men are available to handle the wing.
Otherwise, the wing should be supported with a Sling
or maintenance stand when the fastenings are loosened.
a. Remove wing root fairings and fairing plates.
b. Remove all wing inspection plates.
c. Drain fuel from tank of wing being removed.
d. Disconnect:
1. Electrical wires at wing root disconnects.
2. Fuel lines at wing root. (Refer to precau-
tions outlined in paragraph 12-3.
3. Pitot line (left wing only) at wing root.
4. Cabin ventilator hose at wing root.
5. Wing leveler vacuum tube, if installed, at
wing root.
e. Slack off tension on aileron cables by loosening
turnbuckles, then disconnect cab les at aileron bell-
cranks. Disconnect flap cables at turnbuckles above
headliner, and pull cables into wing root area.
NOTE
To ease rerouting the cables, a guide wire
may be attached to each cable before it is
pulled free of the wing. Cable may then be
disconnected from the wire. Leave the guide
wire routed through the wing; it may be at-
Fin
Repair ...
Description.
Removal and Installation
Repair .....
Horizontal Stabilizer. . . .
Description. . . . . .
Removal and Installation
Repair ....... .
tached again to the cable during reinstallation
and used to pull the cable into place.
f. Support wing at outboard end and disconnect
4-3
4-3
4-3
4-3
4-3
4-3
4-3
4-4
4-4
strut at wing fitting. Tie the strut up with wire to
prevent it from swinging down and straining sturt-to-
fuselage fitting. Loosen lower strut fairing and Slide
it up the strut, the strut may then be lowered without
damage.
NOTE
It is recommended that flap be secured in
streamlined position with tape during wing
removal to prevent damage, since flap will
swing freely.
g. Mark position of wing attachment eccentric bush-
ings (refer to figure 4-1); these bushings are used to
rig out "wing heaviness".
h. Remove nuts, washers, bushings and bolts
attaching wing spars to fuselage.
NOTE
It may be necessary to rock the wing slightly
while pulling attaching bolts, or to use a long
drift punch to drive out attaching bolts.
i. Remove wing and lay on padded stand.
4-5. REPAIR. A damaged wing panel may be re-
paired in accordance with instructions outlined in
Section 18. Extensive repairs of wing skin or struc-
ture are best accomplished using the wing repair jig,
which may be obtained from Cessna. The wing jig
serves not only as a holding fixture, making work on
the wing easier, but also assures absolute alignment
of the repaired wing.
4-6. INSTALLATION.
a. Hold wing in position and install bolts, bushings,
washers and nuts attaching wing spars to fuselage
4-1