Just to follow up for future readers. The part did make it on time, and it looks like we will be ale to leave on schedule.
I think one of the key things that came out of this thread, is that there is that groove cut into the shaft, and as long as the bolt is in place, the arm will not come off. Therefore, it doesn't need much torque. This also means that to remove the arm, you need to take the bolt all the way out, not just loosen it, thinking that releases the arm from the shaft. I'm guessing that some of the accounts I've read in other places of the arm being so hard to remove were due to people trying to take it off with the bolt loose, but still in place.
I am very careful about over-tightening bolts, having done it too many times earlier in life. I was very surprised when this arm just snapped when I was trying to remove it. I don't have a picture, but if you look at the picture of the arm mechanism earlier in this thread, mine broke at about the 7 o'clock position.
I put it back on with just a touch of LocTite on the threads, and just snugged it up a reasonable amount to tension the bolt and fully engage the splines. I used a small vise grip with a cloth in the jaws to turn the shaft as far counterclockwise as I could. It becomes pretty obvious where the arm needs to go on the shaft if you hadn't marked it when you took it off. Placed too far to the rear, and it will hit the frame when the shaft is released. Too far to the front, and it won't reach the release point.
Thanks to everyone for the help.
I think one of the key things that came out of this thread, is that there is that groove cut into the shaft, and as long as the bolt is in place, the arm will not come off. Therefore, it doesn't need much torque. This also means that to remove the arm, you need to take the bolt all the way out, not just loosen it, thinking that releases the arm from the shaft. I'm guessing that some of the accounts I've read in other places of the arm being so hard to remove were due to people trying to take it off with the bolt loose, but still in place.
I am very careful about over-tightening bolts, having done it too many times earlier in life. I was very surprised when this arm just snapped when I was trying to remove it. I don't have a picture, but if you look at the picture of the arm mechanism earlier in this thread, mine broke at about the 7 o'clock position.
I put it back on with just a touch of LocTite on the threads, and just snugged it up a reasonable amount to tension the bolt and fully engage the splines. I used a small vise grip with a cloth in the jaws to turn the shaft as far counterclockwise as I could. It becomes pretty obvious where the arm needs to go on the shaft if you hadn't marked it when you took it off. Placed too far to the rear, and it will hit the frame when the shaft is released. Too far to the front, and it won't reach the release point.
Thanks to everyone for the help.
