Folding tire davit......How is supposed to work/look?

[mcshooter79]

I have an M931 with the 11.00x20s and it has the folding style tire davit. I managed to break one of the pivot pins and considered just welding the davit solid more like the later davits found on the A1 and A2 trucks but first I wanted to know what would I be losing by doing so? What was the purpose of the pivot points on the 1st M939 generation davits? what is it supposed to look like when it's folded? Were they supposed to be removed and stowed in some fashion? Any explanation or especially pictures would be helpful and yes I searched the site and I couldn't find anything, I'm not saying it doesn't exist but the search engine on here isn't the friendliest and I couldn't find anything. Thanks in advance.

 

[doghead]

Is it covered in the -10tm?

 

[Bighurt]

http://www.liberatedmanuals.com/TM-9-2320-272-10.pdf

I'm not sure what "folding" means, the davit boom extends and the wheel brace folds down. The M934, M929, M930 and M936 don't have a davit.

 

[mcshooter79]

Yes, in a very limited fashion.

The A1 and A2 davits did not fold in any way but the first M939 generation trucks had a davit that folded. I can make guesses as to how it folds (mine is inop at the moment) and the -10 does suggest that it was done to reduce vehicle height for shipping. I guess the ones on the A1 and A2 trucks were simply unbolted instead of folded. I just wanted to know if anyone had more info like pictures and and personal experience with them.

 

[rhurey]

There's pictures on ebay of one folded.

"Folding Steel Davit Frame, Spare Tire Hoist Crane for M923 M939 & M900 series 5T"

Hopefully not linking to it will prevent auction related deleting. I'm not promoting the auction, but it has the data requested....

 

[rhurey]

And mine bent. I assume from the weight (extra) of the 14.00's over the 11.00's. Was like that when I got it. On the "fix it" list.

 

[mcshooter79]

OK, I see the picture. I wonder if it would fit in the tool box when folded up?

 

[Bighurt]

So I was working on the M925 this weekend and I discovered two things. One folded up I suspect the Davit will fit in the tool box. And two I suspect the folding davit was used on winch trucks cause it will be in the way when using a jib boom.

 

[cbear]

The dimensions of the box the davit comes in are at the bottom of that listing. Does that fit in the toolbox?