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Steve Plucker · 08-21-2016, 01:48 PM

You may not have the correct nut on there...I think there was one with a sholder that was somewhat thicker. I could be wrong on this and hope someone can correct me. Anyone?

OK...Here it is...The October 1, 1928 Parts Price List (PPL) shows the nut as being A-21878. This is the same part number for the Spindle Arm Nut all the way through production. HOWEVER...the October 1, 1928 PPL list it as being 9/16-18 S. A. E. (11/16 x 7/8) castle nut. Then somewhere between this point and the December 1, 1929 PPL there was a change in the nut itself as it went to 9/16-S.A.E. (5/8 x 1-1/16) castle nut (Special). This occured, I think, because of the "cut" in the Spindle Assembly where the hole is to accept the Spindle Arms Right and Left thus a thicker nut.

What you are experiencing here, I think, is that you have the deeper cut Spindle Assembly and using the early nut and that is why the holes are not lining up to insert the cotter key as the nut is the "thinner" one where you should be using the thicker later one. IF I have read your post correctly!

There were two styles of this "Special" nut. The 28-29 type with the "U" shape slots or cuts and the 30-31 type with the "square" shape slots or cuts in the nut.

Guess you could "farmer" fix it or get the correct nuts.

It could also be that the back side is not seating to its full potential to give you those extra threads that you need to get to the hole to install the cotter key!

This could work into a great article on using the correct nut as there were a few changes in assembly and applications, such as this, that if one were to use the wrong nut for a certain application, they will most surly end up like this.

Pluck

08-21-2016, 01:48 PM	#5
Steve Plucker BANNED Join Date: May 2010 Location: Walla Walla, Washington USA Posts: 6,066	Re: Spindle Arm Ball Stud Loose? You may not have the correct nut on there...I think there was one with a sholder that was somewhat thicker. I could be wrong on this and hope someone can correct me. Anyone? OK...Here it is...The October 1, 1928 Parts Price List (PPL) shows the nut as being A-21878. This is the same part number for the Spindle Arm Nut all the way through production. HOWEVER...the October 1, 1928 PPL list it as being 9/16-18 S. A. E. (11/16 x 7/8) castle nut. Then somewhere between this point and the December 1, 1929 PPL there was a change in the nut itself as it went to 9/16-S.A.E. (5/8 x 1-1/16) castle nut (Special). This occured, I think, because of the "cut" in the Spindle Assembly where the hole is to accept the Spindle Arms Right and Left thus a thicker nut. What you are experiencing here, I think, is that you have the deeper cut Spindle Assembly and using the early nut and that is why the holes are not lining up to insert the cotter key as the nut is the "thinner" one where you should be using the thicker later one. IF I have read your post correctly! There were two styles of this "Special" nut. The 28-29 type with the "U" shape slots or cuts and the 30-31 type with the "square" shape slots or cuts in the nut. Guess you could "farmer" fix it or get the correct nuts. It could also be that the back side is not seating to its full potential to give you those extra threads that you need to get to the hole to install the cotter key! This could work into a great article on using the correct nut as there were a few changes in assembly and applications, such as this, that if one were to use the wrong nut for a certain application, they will most surly end up like this. Pluck Last edited by Steve Plucker; 08-21-2016 at 04:03 PM.