THRUSH AIRCRAFT, INC – MODEL S2R-R1340
AIRCRAFT MAINTENANCE MANUAL
Effective: 01/01/08
7-19
*NOTE *
Adjusting the angle of the
wings with the wing jacks
may assist in wing bolt
removal.
H. Place an aluminum block on the
smallest nut and with a 4X rivet gun,
drive the nut flush to the lower splice
fitting. Proceed in a similar manner
with the remainder of the bolts
working from the smallest to the
largest.
I.
Remove all of the nuts and tube nuts
from the lower NAS bolts. Place the
aluminum block on the threaded end
of the smallest bolt and with the 4X
rivet gun, drive it flush with the lower
splice fitting. Proceed in a similar
manner with the remainder of the
bolts working from the smallest to the
largest.
J. Using a suitable phenolic or soft
metal drift, drift out the NAS bolts
from the lower splice fittings and
lower spar cap with a 2X rivet gun
working from smallest size bolt to
largest size.
K. Pry the lower half splice fitting off the
NAS bolts by tapping phenolic, hard
plastic or aluminum wedges between
the lower splice fitting and the lower
spar cap. Remove the lower half of
the lower splice fitting. In a similar
manner, remover the upper half of
the lower splice fitting.
L. Place the aluminum block on the
threaded end of the smallest bolt in
the upper splice fitting and with a 4X
rivet gun, drive it flush with the spar
cap. Proceed in a similar manner
with the remainder of the bolts
working from the smallest to the
largest.
Under no circumstances
should the bolts be turned
while the threads are in the
spar cap. This could
damage the hole surface
finish and result in a stress
concentration.
M. Remove all of the nuts and tube nuts
from the upper NAS bolts. Place the
aluminum block on the threaded end
of the smallest bolt and with the 4X
rivet gun, drive it flush with the upper
splice fitting. Proceed in a similar
manner with the remainder of the
bolts, working from the smallest to
the largest.
N. Using a suitable phenolic or soft
metal drift, drift out the NAS bolts
from the upper splice fittings and
upper spar cap with a 2X rivet gun
working from smallest size bolt to
largest size.
O. Pry the lower half splice fitting off the
NAS bolts by tapping phenolic, hard
plastic or aluminum wedges between
the lower splice fitting and the upper
spar cap. Remove the lower half of
the upper splice fitting. In a similar
manner, remover the upper half of
the upper splice fitting.
P. Remove the bolts securing the
center wing splice plate to the right
wing. The splice plate will remain
attached to the left wing.
Q. Slide the wings directly away from
the fuselage lifting the wing roots
sufficiently to clear the fuselage
lower longerons.
R. Discard all used nuts, bolts and
washers.
WARNING!
