WINGS

Section 23 Aileron Actuation

February 26, 2005

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Step 1: Fabricate two W-1017A Torque Tube to Bellcrank pushrods by cutting two pieces of AT6-1 1/4 to length shown in Figure 1.

 

Step 2: Cut-out Page 23-10 Figure 1 and use it as a wrap-around template for location the rivet holes in both ends of both W-1017A Torque to Bellcrank Pushrods. Use clear tape to make the template into a ring and align it with the end of the pushrod. Center-punch the "cross hairs" in the wrap around template. Remove the template and use a #40 drill to make six pilot holes in each end of both torque tube to Bellcrank pushrods. Deburr the hole edges on the inside of the pushrod tubes.

 

Step 3: Insert a VA-169 Threaded Rod End into the end of one of the W-1017A Torque Tube to Bellcrank Pushrods. Proper engagement of the threaded rod end in the torque tube to Bellcrank pushrod is when the end of the tube coincides with the edge of the taper in the threaded rod end. See Figure 2.

Using a #30 Drill, match drill the threaded rod end using the pilot holes in the torque tube to Bellcrank pushrod as drill guides. Insert clecos in the holes as match-drilling progresses around the circumference of the torque tube to Bellcrank pushrod.

Repeat until threaded rod ends have been match-drilled to both ends of both torque to Bellcrank pushrods.

Mark the threaded rod ends so that they can be reinstalled in the same position as when they were match-drilled. Remove the threaded rod ends from the torque tube to Bellcrank pushrods and deburr all holes in all parts and prime all parts inside and out.

Permanently install the threaded rod ends to the torque tube to bellcrank pushrods using the rivets called-out in Figure 2.

 
Step 4: Install rod end bearing and jam nuts into the VA-169 Threaded Rod Ends as shown in Figure 3. Theoretically the correct engagement of the rod end bearing yields a bearing to center length of 94 7/16 inches. The rod end bearing engagement may be adjusted during installation of the W-1017 Torque Tube to Bellcrank Pushrod.
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Step 1: Fabricate two W-1018A Bellcrank to Aileron Pushrods by cutting two pieces of ST4130-035 X 1/2 to the length shown in Figure 1.

 

Step 2: Use a #40 drill to make four pilot holes in each end of both W-1018A Bellcrank to Aileron Pushrods as shown in Figure 2. Use a drill press to drill the holes and use a vee-block to support the pushrod tube while drilling. Deburr the hole edges on the inside of the pushrod tubes.

 

Step 3: Insert an AN490-HT8P Threaded Rod End into the end of one of the W-1018A Bellcrank to Aileron Pushrods until the step on the threaded rod end rests on the end of the bellcrank to aileron pushrod.

Using a #30 bit, match-drill the threaded rod end using the pilot holes in the bellcrank to aileron pushrod as drill guides. Insert clecos in the holes as match-drilling progresses.

Repeat until threaded to ends have been match-drilled to both ends of both bellcrank to aileron pushrods.

Mark the threaded rod ends so that they can be reinstalled in the same position as when they were match-drilled. Remove the threaded rod ends from the bellcrank to aileron bellcrank to aileron pushrod inside and out.

Permanently install the threaded rod ends to the bellcrank to aileron pushrods using the rivets called-out in Figure 3.

 

Step 4: Install rod end bearings and jam nuts into the AN-490-HT8P Threaded Rod Ends as shown in Figure 4.

 Theoretically the correct engagement of the rod end bearing yields a bearing center-to-center length of 25 1/4 inches. the rod end bearing engagement may be adjusted during installation of the W-1018 Bellcrank to Aileron Pushrod.

 

Step 5: Fabricate two W-1031 Aileron Bellcrank Spacers by cutting two pieces of AT6-058 X 5/16 to length shown in Figure 5.

 
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Step 1: Check that the length of both of the BUSH BR-065 X .375 X 2.781 Aileron Bellcrank Bushings in between 2 /3/4 inches and 2 25/32 inches. Check that an AN bolt will fit the inside diameter of the aileron bellcrank bushing and ream if required. Deburr the ends of the aileron bellcrank bushings so that they slide easily inside the WD-421 Aileron Bellcrank. See Figure 1.

The pivot tube of the aileron bellcrank must be 1/32 inch to 1/16 inch shorter than the aileron bellcrank bushing. File the ends of the aileron bellcrank pivot tubes if/as required to achieve the correct length. Deburr the inside edges of the aileron bellcrank pivot tubes. See Figure 1.

Insert the aileron bellcrank bushing into each aileron bellcrank as shown in Figure 1.

 

Step 2: Install the WD-421-L Aileron Bellcrank/BUSH BR-065 X .375 X 2.781 Aileron Bellcrank Bushing subassembly into the left wing as shown in Figure 2.

 

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