Brief Description: Installed control column mount assemblies
Step 1: Carefully deburedr the edges and holes of the F-1233A and F-01233B-L-1 & -R-1 so that the parts fit together tightly. Step 2: Machine countersunk the four holes surrounding the bearing hole in each F-01233B-L-1 & -R-1 for the double flush rivets called out. Machine countersunk the indicate #30 hole in the sloped flange of the F-01233B-L-1 & -R-1 for the dimples in the F-01203F (see Page 32iS/U-09). Step 3: Assembled and riveted the parts as shown. Noted the location of the indicated hole that orients the top of the F-1233A. Step 4: To remove the powder coating from the bolt holes, final-drilled #12 all of the .188 [4.8 mm] holes and final-drilled 1/4 all of the .250 [6.4 mm] holes in the WD-1210. Step 5: Inserted the WD-1210 through the cutout in the right side skin and the seat rib lightening holes as shown in Figure 2 Step 6: Except for the indicated top holes, riveted the Control Column Mount Assemblies to the F-01203A-1 Bulkhead as shown in Figure 3. Placed the manufactured heads on the bulkhead
