LANCE
II SERVICE MANUAL
5-19. REMOVAL
OF STABILATOR
TRIM CONTROLS
(AFT). (Refer
to Figure 5-9.)
a. Remove
the access panel to the
aft section of the fuselage.
b. Block the trim cables at
the first set of pulleys (13) forward
of the cable turnbuckles
(10
and 11) in the aft section of the fuselage
by the method shown in Figure
5-8.
c.
Disconnect the cable
(12) at the turnbuckles
(10 and
11) in the aft section
of the
fuselage.
d. Remove cable guard (18) from pulley cluster (35) and cable guards (19) from pulley
cluster (41).
e. Remove the fin tip by removing attachment screws.
f. Disconnect the push rod (30) by removing the attaching hardware (29) securing
push rod to screw (22).
g.
Remove safety wire,
bolts, washers
and bushings (20, 44
and 47) securing
forward end
of barrel (21).
Remove snap ring (28) to free
aft end of barrel (21).
h. Draw the trim cable (12) from the fuselage and up the fin.
5-20. INSTALLATION OF
STABILATOR TRIM CONTROLS
(AFT). (Refer to Figure
5-9.)
a. Wrap the trim barrel (21) by first laying the center (as measured equally from each
end to the center of the cable) of the trim cable (12) in the slot of the barrel. Bring the half
of the cable to be used on the right side through the diagonal slot in the flange at the
forward end of the barrel and wrap aft in a clockwise direction 7 wraps to the center of
barrel. Bring the half of the
cable to be used on the left side through
the diagonal slot in the
aft end of the
barrel and wrap forward in a counterclockwise
direction 7 wraps to the center
of barrel.
Count a total of 14 cable wraps
on the top side of the barrel. (Refer
to Figure
5-10.)
b. Block the cable by clamping between two pieces of wood laid next to the wraps to
prevent unwrapping.
Fabricate
block with a notch
so hardware (20)
can be installed.
After
installation of hardware safety wire the bolts.
c. Lubricate the bearings (24, 25 and 26) and install barrel (21) per exploded view
given in Figure 5-9. Use spacer washers (42) as required to give a maximum barrel end play
of .0005 to .0015. Install the barrel using any combination of AN960-10, AN960-10L and
AN960PDIOL washers
(43) to achieve free barrel rotation
with trim cable rigged and
tensioned.
d. Route
the cables down
the fin into the
fuselage through
the two pulley clusters
(35
and 41) and attach the ends to the forward trim cables (8 and 9).
e. Install all cable guards (18 and 19).
f. Remove the blocks that
are holding the forward cables tight
and aft cables at the
barrel.
g. Set
cable tension and
check rigging and
adjustment per Paragraph
5-21. Check
safety
of all turnbuckles.
h. Install fin tip and secure with screws.
i
Install the access panel to
the aft section of the fuselage.
5-21. RIGGING
AND ADJUSTMENT
OF STABILATOR
TRIM.
(Refer to Figure
5-9.)
a.
Level the airplane. (Refer
to Leveling, Section
II.)
b. Check for proper stabilator trim cable tension as given in Table V-I. If cables were
disconnected,
rotate control wheel
several times to
allow the cables
to seat and recheck
tension.
c. Secure the stabilator in
neutral position. To find neutral,
place a rigging tool on the
upper surface of the stabilator as
shown in Figure 5-6. Zero a bubble protractor,
set it on
the rigging tool and tilt the
stabilator until the bubble
is centered.
Revised: 9/2/78
SURFACE
CONTROLS
1G11
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