Step 4: Position the WD-415 Trim Cable Brackets on the two E-616 Cover Plates as shown in Figure 3. The brackets are located on opposite sides of the cover plates for the left and right elevators.

Drill four #30 holes, located approximately as shown, through the brackets and cover plates.

Step 5: The attachment hardware for the E-616 Cover Plate is shown in Figure 4 for reference purposes. Dimple the cover plate for screws and the E-615 Reinforcement Plate to accept the dimple in the cover plate.

Dimple the #40 holes in the reinforcement plate for the dimples in the skin and the 3/32" flush rivets used to attach the nut plates. The K1100 nut plates will accommodate the dimple for the screws in the reinforcement plate, but will have to be dimpled for the nut plate attachment rivets. (see Section 5R)

Step 7: Completely disassemble both elevators. Mark all the parts so that they can be reassembled in the same position. Make sure to mark the inside surface of the skins to prevent dimpling the holes in the wrong direction.

Step 8: Deburr all the holes and any unfinished edges.

Step 9: Dimple the holes in the E-1001A&B Skins (don't forget the three hholes in the close out tabs), and the E-913 Counterbalance Skin.

Step 1: Dimple the holes in both flanges of the E-1002 Front Spars to accept the skin Dimples.

Step 2: Machine countersink the inboard twenty nine holes in the top flange (THE TOP FLANGE ONLY!) of the E-1007 Rear Spars to accept the skin dimples. See Figure 1. Machine countersinking these holes provides a flat surface on the underside of the flange to attach the trim tab hinge.

Step 3: Dimple the 3 holes in the front spars  which are used to attach the rib roots, for the 3/32ths rivets. Dimple flush the side of the spars indicated in Figure 1

Dimple the two holes in the rear spar.

Step 4: Dimple the forward and aft flanges of the E-905 Root Ribs to accept the dimples made in the webs of the spars. Dimple the top and bottom flanges to accept the skin dimples. (Note; The vise grip dimple die worked well for this.)

Step 2: Dimple the holes in the long flange of the inboard E-1022 Shear Clip for the 1/8" flush rivets, flush on the side shown in Figure 2. (The shear clip attached to the E-903 Outboard clip does not need to be dimpled.)

Step 3: Dimple the flanges of the E-1008A & B Rib halves, shown in Figure 3, to accept the dimples in the skins.

Step 4: Dimple the two holes, indicated in Figure 4, in the web of the E-904 Inboard Tip Rib for 1/8" holes

Dimple the corresponding holes in the E-903 Outboard Tip for the dimples in the inboard tip.

Step 5: Dimple the top and bottom flanges of the E-903 and E-904 Tip Ribs for the skin dimples.

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