LANCE
II SERVICE
MANUAL
5-33. WING
FLAP CONTROLS.
5-34. REMOVAL OF WING FLAP CONTROLS. (Refer to Figure 5-16.)
a. The flap torque tube assembly may be removed by the following procedure:
1. Remove the access plate located between the underside of the aft section of each
wing and the fuselage by removing attaching screws.
2. Remove the floor panel located aft of the main spar by removing the center
seats, seat belt attachments and the screws securing the panel. Lift the panel and
remove from airplane.
3. Disconnect the left and right
flap control tubes (rods) (4)
at the flaps by
removing the nuts, washers and bolts (2) or at the torque tube cranks (arms) (11) by
removing the bolts and washers (12) from the inner side of each crank. It will be necessary
to remove bolt (12) through a hole in the side skin of the fuselage located over the torque
tube with the flap
handle moved to its 40
degree position.
4. With the flap handle (29), fully extend the flaps and disconnect the flap tension
spring (22) at the spar or the aft end of the control cable (23) as desired.
5. Grasp the
flap handle, release the plunger
(35) and allow the flap to return
to
the retracted position. Use caution
as forward pressure will be on the
handle with the
tension spring (22) disconnected.
6. Disconnect
the flap
return spring (34)
at the spar or return
chain (32) as
desired.
7. Disconnect
the control cable from the chain
(20) by removing cotter pin, nut,
and clevis bolt (21).
8. Remove the tube support blocks
(16 and 33) by removing the
block attachment
bolts (15).
9. Remove the nuts,
washers and bolts (10) securing
the right and left cranks (11)
and stop fittings (13) on the torque tube.
10.
From between
each wing and the
fuselage, remove
the cranks (11)
from the
torque
tube.
11. Disconnect
one bearing
block (7) from
its mounting
brackets (6) by removing
nuts, washers and bolts (5).
12. Slide
the tube
from the bearing
block
still attached
to its brackets,
raise
the end
and lift it from the floor opening.
b. The
flap control
cable (23) may be
removed by the
following procedure:
1. If the center
seats and
floor panel
have not
been removed,
remove
the seats
and
the screws securing the floor panel.
2.
Disconnect
the flap tension
spring
(22) from
the cable
(23) if not
previously
disconnected,
by extending
the flaps
to relieve spring
tension.
3. Retract
the
flap. Use caution
as forward
pressure
will be on
the handle
with the
spring
disconnected.
4. Disconnect
the cable
from the
chain (2) by
removing
cotter pin,
nut, clevis
pin
and bushing (21).
5. Remove
the
flap handle
bracket
and trim
control
wheel
cover.
6. Remove
the aft
heat deflectors
on
each forward
floor tunnel
by sliding
far
enough
to release
the spring gasteners.
7.
Lift the aft
section
of the tunnel
carpet
far enough
to remove
the screws
securing the
tunnel cover that is
between the flap
handle and the spar
cover. Remove the
cover.
8.
Remove the cotter
pin cable guard
from the flap cable
pulley (24) located
inside
the
floor tunnel just ahead
of the spar housing.
Issued: 1/3/78
SURFACE CONTROLS
1G22
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