Thrush Aircraft S2RHG-T65 TURBO THRUSH Maintenance Manual page 167

THRUSH AIRCRAFT, INC – MODEL S2RHG-T65 TURBO THRUSH
On all NAS bolts described hereinafter, insure that at least
two bolt threads are showing beyond the edge of the fiber
locknut and that the nut has not bottomed out on the bolt
threads.
C. On the left wing, install the center splice plate if removed, to the spar web and
install the 3/16" and ¼" bolts and c/s screws, AN960 and MS20002C washers and
MS21042 nuts per Figure 7-15. Torque the MS21042 nuts per Table 7-1, 39
places.
D. Elevate the left wing and place it in position. Butt the wing attach angle squarely
against the fuselage vertical wing attach tube assembly. Locate the rear spar
fitting into the fuselage attach fitting and install the 7/8" bolt, AN960 washers and
MS21044N nut. Bring nut up snug but not to final torque.
E. Support the wing at the wing jack point on the front spar, approximately 8 feet
inboard of the wing tip.
F. Rest the inboard end of the main spar on the lower longeron with a ½ inch
temporary spacer between.
G. Install the left wing inboard attach angle on the main spar web with NAS ¼ inch
bolts, AN960 and MS20002C washers and MS21042 locknuts (See Figure 7-16).
Torque the locknuts per Table 7-1, 6 places.
H. Align the bolt holes in the wing attach angles with the holes in the fuselage vertical
wing attach tube. Install one AN 5/16" bolt in the top hole and secure with an
AN960 washer and AN365 locknut. Install locknut finger tight.
I. On the right wing, install the outboard wing attach angle on the main spar web with
NAS ¼ inch bolts, AN960, and MS2002C washers, and MS21042 locknuts.
Torque the MS21042 nuts per Table 7-1, 6 places.
J. Elevate the right wing and place in position with the 1/2 inch temporary spacers as
was done with the left wing.
holes in the center splice plate. Install the 3/16" and ¼" bolts and nine each
countersunk screws with heads forward and secure with AN960 and MS20002C
washers and MS21042 locknuts. Bring the nuts up snug and torque only those
which will be inaccessible when the splice fittings are installed.
K. Install the right wing inboard attach angle on the main spar web with NAS ¼ inch,
AN960 and MS20002C washers and MS21042 locknuts. Torque the locknuts per
Table 7-3, six places.
Be sure to orient the MS20002C washers such that each
countersink is mated with the radius in the underside of the
NAS bolt heads.
7-16
AIRCRAFT MAINTENANCE MANUAL
** CAUTION **
Align the holes in the right wing spar web with the
** CAUTION **
Effective: 5/05/04