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CENTER SECTION MID FUSE LOWER FUSE  SIDE SKINS ROLLOVER TAIL ATTCH  SEATS PEDALS FUEL FWD FUSE  BUILDERS LOG
Page 20.03 Center Section Bulkhead
20.00 20.01 20.02 20.03 20.04            
Step 01: Place F-1276 Bottom Skin on the tabletop. Place F-1204 Center Section assembly over bottom skin and cleco the bottom Flanges of the bulkheads as shown in Figure 1.

07/22/12
Step 02: Temporarily loosen the clamps holding the F-1204D Center Section Aft Bulkhead to the F-1204 Center Section Assembly and allow the parts to re-line according to their being clecoed to the F-1276 Bottom Skin. Tighten the clamps and mach-drill #30 the holes in the center section aft bulkhead into the center section assembly beginning at the center and progressively drilling and clecoing outboard. See Figure 1. Drill # 11 two places, see Pg 20-04, Figure 1.

07/22/12
Step 03: Un-cleco the bottom flanges from the F-1276 Bottom Skin and remove the F-1204 Center Section Assembly and F-1204D Center Section Aft Bulkhead. Set aside the bottom skin as it will be called for at a later stage of fuselage assembly. Un-cleco the center section aft bulkhead from the center section assembly, remove the AN4 bolts, and deburr all match-drilled holes.

07/22/12
Step 04: Machine with a 100 ( deg ) Countersink the holes in the F-104 Center Section Assembly that receive an AN426AD4 rivet, See Figure 2 and Pg 20-04 Figure 1. A piece of thin scrap with a 1/4" hole drilled in it may be used to check the diameter ( as described on page 14-02 ) . Dimple the corresponding holes in the F-1204D Center Section Aft Bulkhead, See Pg 20-04 Figure 1.
 
Step 05: Cut apart the F-1204P Skin Attach Flange to make F-1204P-L and F1204P-R Skin Attach Flanges as shown in Figure 3.
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Step 06: Cut apart the F-1204T Skin Stiffener to make F-124T-L and F1204-R Skin Stiffeners as shown in Figure 4.

Step 06: Separate the F-1204T-L and F-1204T-R Skin Stiffener by removing the hatched areas shown in Figure 4.
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Step 07: Attach the F-1204P-L and F-1204P-R Skin Attach Flanges to the F-1204 Center Section as shown in Figure 5.
 
Step 07: Separate the F-1204U-L and F-1204U-R Skin Stiffener by removing the hatched areas shown in Figure 5.  
Step 08: Bend the bottom flanges of the F-12004U-L and F-1024U-R Skin Stiffners up ( to fitthe inside radius of the F-1024 Center Section Assembly ) as shown in figure 6. See 20-05 Figure 1 for the radius and part location.  
   
   
Page 20.03 Center Section Bulkhead
20.00 20.01 20.02 20.03 20.04            
CENTER SECTION MID FUSE LOWER FUSE  SIDE SKINS ROLLOVER TAIL ATTCH  SEATS PEDALS FUEL FWD FUSE  BUILDERS LOG
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