THRUSH S2R – G10 Maintenance Manual page 141

AIRCRAFT MAINTENANCE MANUAL
M. Apply anti-seize to the matching holes
in the upper spar cap and place the
top splice fitting into position. Move
the wings as required and press the
bolts through the holes in the upper
spar cap.
N. Place the splice fitting (bottom-half)
into position and press it upward over
the bolts. When bolt threads are fully
exposed, clean threads thoroughly
with acetone or other non-petroleum
solvent and dry. Install MS20002 (no
countersink) washers (12 places) and
bring the tube nuts (two places) and
the MS21044N nuts (10 places) up
snug but not to full torque.
O. Correctly position the lower plate, part
number 22514-1, on bottom of lower
splice fitting (bottom) and insert two ¾"
NAS bolts
countersunk washers with chamfer
towards the bolts hexagonal head.
Place upper splice fitting on top of
lower spar cap.
same as for the upper splice blocks,
but be sure to clean threads before
installing nuts.
through upper splice fitting and lower
spar cap until flush with lower surface
of cap. Install and snug tube nuts but
do not torque.
NAS bolts in the lower splice fittings
starting with the largest bolts working
to the outboard
P. Align the holes in the wing attach
angles (left and right wings) with the
holes in the fuselage vertical wing
attach tubes and install the remaining
seven 5/16 inch AN bolts with AN960
washers and MS21044N nuts. Bring
the locknuts up snug but not to full
torque.
Q. Torque all locknuts on the NAS ¼ inch
bolts through the spar web and splice
plates per Table 7-3, 39 places.
R. Torque the tube
MS21044N locknuts on the NAS bolts
7-24
Page
THRUSH AIRCRAFT, INC – MODEL S2R-G10
with MS20002C
Use anti-seize the
Push large bolts
Install the remaining
nuts and the
through the upper and lower splice
fittings per table 7-3, four places and
20 places, respectively.
S. The upper and lower tube nuts are
joined together by locking sleeves.
Install sleeves with four each. 5/16
NAS bolts, MS20002C5 chamfered
washers, under the head, AN-960-516
washers, and MS21044N5 locknuts.
Torque locknuts per table 7-3.
T. Remove the ½" temporary spacers
from between the wing spars and the
longerons, two places.
U. Torque the locknuts on the AN5 bolts
through the left and right wing attach
angles and the fuselage vertical tubes
per Table 7-3, eight places.
V. Torque the locknuts on the AN7 bolts
through the left and right wing rear
spar attach fittings per Table 7-3, two
places.
W. Release the wing jacks and check the
wing dihedral for 3 ½ degrees.
X. Install the spray pump and bracket and
torque all nuts and bolts.
Y. Complete the wing installation by
making the necessary connections in
the electrical, fuel, pitot, and flight
control systems.
Z. Reconnect the batteries.
WING INSTALLATION WHEN THE WING
ATTACH ANGLES ARE REPLACED.
(See Figures 7-13 & 7-14)
A. With the wings supported on wing
jacks, position the wing roots in the
fuselage and place a ½ inch temporary
spacer (aluminum
between the lower longeron and the
main spar cap of each wing. (This will
properly set the wings angle of
incidence.)
B. Install the spar web splice plate and
the upper and lower main spar cap
splice fittings in accordance with the
or phenolic)
Effective: 03/26/2010