Pg. 26-03 Step 3: Riveted the Aft Seatback Brace Hinges to the Seatback Braces. Manufactured heads on Seatback Brace. Step 4: Clecoed the Upper, Lower and F-1237C-L&R Seatback Angles to the Seatbacks. Final-drilled #12 the holes in the lower corners of the Left, Right, Lower Angles and Seatback. Disassembled an deburred. Step 5: Riveted the Upper Seatback Angle to the top row of holes in the Seatback. Manufactured heads on Seatback. Left end holes open. Step 6: Riveted the Fwd Seatback Brace Hinge to the Seatback. Manufactured heads on Seatback. Step 7: Riveted the Lower Seatback Angle and Seatback Hinge to the Seatback. Manufactured heads on Seatback Hinge. Left end holes open. Step 8: Riveted the L&R Seatback Angles to to the Seatbacks using the appropriate rivets. Manufactured heads on the Seatback Angles. Bolted the lower corners using the called out hardware. Pg. 26-04 Step 1: Cut two 14 1/2 inch long pieces of hinge pin. Bent 1 inch of one end 90 degrees and ground a blunt point on the other. Step 2: Attached the Seatback Brace to the Seatback Assy. by inserting the hinge pin through Fwd and Aft Hinges. Step 3: Drilled a #52 hole in the Seatback Brace next to the hinge pin. Step 5: Cut (4) 5 1/2 inch lengths of hinge pin. Bent one end of each pin 90 degrees and ground a blunt point on the other.
