LANCE II SERVICE MANUAL
5-10. INSTALLATION
OF
AILERON BELLCRANK
ASSEMBLY.
(Refer to Figure5-2.)
a. Ascertain that
the bellcrank pivot
bushing (26) and
teflon tube (27) are
installed in the
torque tube
portion of the bellcrank
(6).
b. Place the
bellcrank in position
in the wing with
a washer located
between each end of
the torque
tube and the mounting
location.
c. Install
the bellcrank pivot
bolt (25) with the
head up. Install tapered
washers and
nut
on the bolt and torque
nut 20 to 25 inch-pounds.
Check
that the bellcrank rotates
freely with
little
up-down
play.
d. Install
and adjust control rod (7) and check
aileron travel per Paragraph 5-11.
e. Connect the ends of the
primary (13 or 17) and balance(18 or
19) control cables to the
bellcrank
using bolts, washers, nuts and cotter
pins. Allow the cable ends to rotate freely
on the
bellcrank.
f. Tighten the control cables at the balance cable turnbuckle (24) in the floor opening aft
of the main
spar. Check cable tension
per Paragraph 5-11.
g. Install the access plate
on the underside of the wing, the floor
panel aft of the main
spar, seat belt attachments and seats.
5-11. RIGGING AND ADJUSTMENT OF AILERON CONTROLS.
NOTE
Flap adjustment must be complete before starting aileron
adjustment.
a. To check and adjust the rigging of the aileron controls, first set the right and left
aileron bellcranks
at neutral position. (Ascertain that
the control chains have been rigged
per
Paragraph 5-5.) This
may be accomplished by the
following procedure:
I.
Remove the access plate to each aileron
bellcrank located on the underside
of the
wing, forward of the inboard end
of the aileron by removing the plate
attachment screws.
2. Place tee bar in'full forward position. Keep it in this position by using a suitable
tool or by placing weights on the aft side of the stabilator if stabilator cables have been
previously tensioned.
3. Affix a bellcrank rigging
tool, as shown in Figure 5-3 between
the forward arm
of each bellcrank and
the adjacent rib. The slotted end of
the tool fits on the arm forward of
and adjacent to the primary control cable end. The other end of the tool is positioned so that
the side of the tool contacts the aft side of the bellcrank stop. The bellcrank must be moved to
allow a snug fit of the tool between the bellcrank arm and rib. To do so, it may be necessary to
loosen a primary control cable or the balance cable. (This tool may be fabricated from
dimensions given in Figure 5-19.) Neutral position of the bellcrank may also be found by
locating the center of the balance
cable attachment bolt or the
hole in the aft arm of the
bellcrank
three inches from
the face of the adjacent
rib.
Revised: 10/3/80
SURFACE
CONTROLS
1F23
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