Boeing F4B-1 - Tail Surfaces

1. Install the wire spacers.
m. Install the ailerons and aileron struts and c onnect the control linkage,
including the torque tub e. The control rod will operate freely in only one position
and this should be verified through the inspection doors in the wing before con-
necting the links at either end.
With the ailerons and stick in neutral, the pin cent ers of the lower ends of the
aileron struts must be the same distance below the top of the wing spar for both
struts. If this condition is not obtained , the wing alignment should be re-checked,
with particular reference to the gap and dihedral.
n. Install the pitot and stati c tubes on the left interplane N-strut, attach
the fairing and connect the airsp eed tubing in the wing. The proper connection
can be determined by blowing through the pitot tube. Do not blow into the
airspeed indicator.
o. Connect the electric wiring. (See Sec. XIV).
p. Lock all bolts and nuts securely and install the fairing socks on the N-struts.
4. DISASSEMBLY: a. To disassemble the wings, reverse the procedure
outlined in paragraph 3. Be sure to disconnect the airspeed tubing and electric
wiring.
b. All bolts, nuts and pins should be returned to their proper places and locked
to prevent their being lost.
5. MAINTENANCE: a. The wings must be inspected regularly and all wear
or damage corrected immediately. All brace wires must be kept properly ten-
sioned.
b. Make a periodic check of the wing alignment.
c. The trailing edge drain holes in wings and ailerons must be kept open.
SECTION III
TAIL SURFACES
Paragraph
6. Assembly.... . ..... .... ... .. ........ ... . ... .. .... .. ... .......... ... .
7. Alignment ... .......... ... . .. ........ ... ... . .. .
8. Maintenance ...... .. ............... .. ..... .
9. Lubrication ...... .. .. . .. ... ... . .. . .. .... .......... . .. .
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6. ASSEMBLY: (Reference Fig. 5 and 6). a. Support the fuselage approxi-
mately level and tie the tail down.
b. The fin is installed by inserting the lower end of the fin post in the socket
on the tail post (A, Fig. 5) and bolting the front of the fin to the clamp on the
adjusting screw (B, Fig. 5). Set the leading edge of the fin ¾ inch to the left of
the center line of the body and tighten the check nuts on the adjusting screw.
c. Install the rudder, being sure to place the bronze washer on the lower
hinge pin. The fin and rudder are fastened in place by the bolt through the tail
post, socket and hinge pin (C, Fig. 5). A beveled washer is to be used between
the nut and tail post. Note that the hole in the tail post and socket is elongated
to allow for adjustment of the fin.
d. Attach the brace wires to the fin, the right hand threads being on the lower
ends. Place each half of the stabilizer in position with the rear spar fitting in
the bearing. Connect the wires to the stabilizer and fasten the front spar ends to
the connecting tube (E, Fig. 5). Install the bolt connecting the stabilizer halves
through the bearing (D, Fig. 5).
e. Install the stabilizer struts.
f. The elevator connector is attached to one of the elevator halves. Place
this half of the elevator in position by slipping the hinge pins into the hinges on
the stabilizer. Place the opposite half in position and bolt to the elevator con-
nector. The right and left halves of the elevator may be identified by the trailing
edge drain holes, which are on the bottom surface.
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