MTFCA Forum

I'm not sure what the callout for the cotter pins is, since the parts books don't mention them at all (probably because they were so common it wasn't necessary, like lock washers today). So I gave both the Willy's part number and Pin-Cotter (PC) part number. If anybody knows what Ford's numbers and or letters were for cotter pins, please let me know. I also gave the size based upon the nut/bolt sizes I've seen. The only nut I don't have a part number for is the one on the brake expander...there is no reference to it on any of the pages I've looked for, nor does Lang's sell any of these parts (with exception of the pins for the expander collar and the expander lever). It's like the main machined part was more important than what held it on any assembly and that any old castellated fine threaded nut was fine...sometimes I'm astounded by the incompleteness of Henry's thinking when it came to those parts assembly layouts he did.

Anyhoo, If any of you know what the part numbers for either the cotter pins or that nut, please let me know, so I can add them to the drawing.

Good job brother Martynn.

Martynn, Thanks for bringing light to many things. I had no idea that the brakes worked like that. I just assumed that they were like our cars. Cotter pins / keys... there are little ones and there are big ones, seems like there never is the right ones, and there is always the left ones.

Small revision, wrong size in decimals, changed to fractions (Rev.1-A).

Still would like to know the size of that nut with the question mark.

Anyone know the 'standard' number for a 9/16" castle nut?
That is the size of the brake expander nut Martynn is after.
Cheers
Adrian

Ok, had to make some changes, for one thing that nut I was looking for is a 9/16-24.
The other thing I had to change was where the links (1067) for the expander (1061) went, the top one goes to the rear hole and the bottom goes to the front hole on the expander

Revision 1-B

Lol, sometimes I get lost in all those itty bitty lines too. For some unknown reason I put an extra guide line in from the bottom of the upper 1067 link to the front hole of the Expander 1061, which is not where it goes. There is a line already showing it goes to the rear hole on the expander.
Revision 1-C corrected and deleted the extra line.

Thanks Martynn for all the detail in your diagrams and making them right.

Nothing like a good picture to help put an assembly together correctly.