GrassStripFlyBoy Posted January 31, 2021 Report Posted January 31, 2021 When flying yesterday I noticed rudder trim was off, adjusted trim wheel it felt real easy to spin. Taking a look at the system I think I knocked the cable off the right side adjuster pulley when I was down in the tunnel doing AP wiring? I notice the left side cable (yellow line) is on top of the pulley, the right side (red line) is significant air gap not even touching and under the pulley. Looks obvious but thought I'd inquire here for confirming what is normal situation, as the assembly manual does not show full details. Quote
Tom Baker Posted January 31, 2021 Report Posted January 31, 2021 They should both be over the pulley. Quote
GrassStripFlyBoy Posted January 31, 2021 Author Report Posted January 31, 2021 Thanks, was fairly certain and just came in from correcting it. Trim wheel feels right again with neutral center. Surprised I managed to do this and not notice it happened. Quote
robjahnke Posted March 4, 2021 Report Posted March 4, 2021 My Rudder Trim rolled hard when adjusting to the left and easy adjusting to the right. I also noticed that I was not able to get adequate right rudder trim. The picture shows what I found today. The right rudder cable may have been off the pulley for some time. I don't know why it came off. Seems like it would be hard to do it on purpose or by accident. I did not do any work in there since I bought the plane last October. By turning the trim almost all the way to the left, it was pretty easy to use a bar to pull the cable toward the center of the tunnel, and then lift it by hand up and over into the proper position. This would be a good item to add to the annual inspection checklist Rob Quote
Tom Baker Posted March 4, 2021 Report Posted March 4, 2021 During maintenance, especially during the rubber replacement, if the rods are disconnected from the steering horn on the nosegear the cables can come off the pulleys. They can also come off if the cable tension is too loose. Quote
GrassStripFlyBoy Posted March 4, 2021 Author Report Posted March 4, 2021 8 hours ago, robjahnke said: I don't know why it came off. Seems like it would be hard to do it on purpose or by accident. My thoughts as well, and suspect Tom's point about during maintenance is when my situation developed - prior to me. But working in the tunnel, then noticing it, and never really having to adjust the rudder trim prior I can't say for certain. And this is hard to install back on pulley. My technique was: Crank full left trim & lower right pull full down. Use fingers to flip cable up along side of pulley onto / top of the side nut. Lastly a very long screw driver (like 24") under the cable through the rear tunnel opening behind bulkhead and flip it up and over into the track. Quote
robjahnke Posted March 4, 2021 Report Posted March 4, 2021 I used a similar method only completely through the front tunnel opening (removed the tray). I cranked in left trim but not all the way. Just far enough to lower the pulley so it deflected the rudder cable down a bit. Then I flipped the cable by hand up to the nut as you did. Then I lowered the pully the rest of the way (full left trim). At that point I used a large wrench as a crow bar to move the cable toward the center of the tunnel, then flipped the cable up to the top of the pulley by hand. It wasn't that difficult Rob Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.