Thrush Aircraft S2RHG-T65 TURBO THRUSH Maintenance Manual page 168

THRUSH AIRCRAFT, INC – MODEL S2RHG-T65 TURBO THRUSH
L. Lubricate the 12 NAS wing splice attach bolts and the holes in the upper splice
fittings, (top and bottom halves) with Antisieze. Position the upper plate part
number 20242-2 on top of the top splice fitting and insert the two large NAS bolts
with MS20002C countersunk washers. Be sure to mate the countersunk portion of
the washer with the head of the bolt. Insert the remaining 10 NAS bolts with their
respective holes and position all 12 bolts flush with the bottom of the fitting.
Use extreme care to avoid damaging the spar cap and the
surface finish of the holes through the spar cap.
M. Apply Antiseize 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 upper splice fitting (bottom-half) into position and press it upward over
the bolts. Install MS20002 (no countersink) washers (12 places) and bring the
22506-7 tube nuts (two places) and the MS21044N nuts (10 places) up snug but
not to full torque.
Use extreme care to avoid damaging the spar cap and the
surface finish of the holes through the spar cap.
O. Correctly position the lower plate part number 22514-1 on bottom of lower splice
fitting (bottom) and insert two large one inch NAS bolts with MS2002C
countersunk washers with chamfer towards the bolts hexagonal head.
(upper) lower splice fitting on top of lower spar cap. Push lower bottom splice
fitting with large bolts until flush with lower wing spar and through upper splice
fitting. Install and snug tube nuts but not full torque. Install the remaining 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 AN 5/16 inch
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 Figure 7-3, 39 places.
R. Torque the tube nuts and the MS21044N locknuts on the NAS bolts through the
upper and lower splice fittings per table (Figure 7-3), four places and 24 places,
respectively.
S. The upper and lower tube nuts are joined together by u-shaped clevises (part
number 22506-11). The tube nut connection will require the use of Thrush Aircraft
Inc tool part number ESK681-1 or equivalent in drilling and locating the .25"
diameter holes. After drilling deburr all holes, and install clevises with eight each.
Effective: 5/05/04
AIRCRAFT MAINTENANCE MANUAL
** CAUTION **
** CAUTION **
Place
7-17