The GMC CCKW

Hello All,Can any one help with some photos showing the tool stowage BRACKETS as fitted to the side steps I also need to be sure how the pick/matock head is stowed in its brackets as I may even have the "wrong" head trying to fit into the right brackets any help appreciated..Thanks again Erb

Hello Erb,

The pioneer tool storage brackets on the running boards are hard to photograph without removing the Gas and Water cans. Here are two photo's and an illustration from an engineer handtool manual that explains the difference between a Mattock and a Pick (two different tools).

The late CCKW TM 9-801 manual has the same illustrations. The correct tool for the CCKW is a Mattock with the flat blade like an adz on one end. The bracket to secure it is a wide flat horizontal piece at the forward end of the running board behind the gas can bracket. The pick will not fit and is not the correct tool. The military part number on the Mattock is 41-M-720. The "M" indicating "Mattock" and not "P" for "Pick".

The straps can be either leather or webbing. The bracket in the center that secures the pointed end of the Mattock has a small "L" shaped rod, threaded on one leg and is sucured tight with a special wing nut that has only a single "wing". The one shown here is not correct. (Not Mine) A standard hardware wing nut like the one shown with twin wings work OK but it should have the correct single one. They are the same for the two hold downs on the battery box.

I can get some better detail photos from my truck if you need more detail.








I like this arrangment better that the later addition of the universal bracket on the hood side panel.

Be a good trooper and tell the lads that it is a "Mattock" and not a "Pick"

Cheers

Cat Man

CAT MAN. I thank you , That really helps it appears I have the correct brackets except for the "L" shaped bar with the threaded end and wing nut,which I do not have. The matock head that I have " looks " correct but dosnt have the serial number detail that you gave me,It is marked "WARWOOD 5 " So I dont think it is correct but I cannot be certain until I obtain one of those "L" shaped bars that secure the head, as the flat end of the matock fits snugly into the bracket behind the fuel can holder. If you could post a photo of the Matock mountings and the "L" and wing nut I will know what to look for or try to make as I do not have the correct wing nuts on the battery cover either!!! .But thank you again the photos really have helped asthe images in the TM 901 are not very good for the detail .....Regards Erb

Cat Man,

In your travels have you ever seen a wingnut large enough to pass as the original. Fastenal or Graingers.

I am thinking buying one and cutting one wing off. This issue I have is I have never found a nut with wings large enough in new stock.

Bill

Bill,

I have not seen any original wing nuts in a long time. When I find a CCKW in a junk yard or gravel pit, I always try to dig around in the junk in the glove box and under the seats. I have found a wing nut or two that way.

No I have never found a wing nut that would pass if cut down. I did check Fastenal and they have some large ones. You would have to weld up the larger opening and drill and tap the hole to 5/16 Inch.

Here is a better photo of the wing nuts and how they look on the battery box. Standard current hardware on the left, WWII ammo box lid nut in the center, and original CCKW on the right. The rule shows the overall height of the correct nut at just about 1 1/2 inch.





I've been told that original one leg nuts were easy to loose and ammo box wing nuts were the same thread size and easy to get. Makes a good story if you can put those on for bait and wait for some purest to tell you they are "wrong".

Hope that gives you some ideas.

Cat Man

Erb,

Here are some better photos of the tool storage brackets. I forgot to tell you that a civilian Mattock blade is sometimes wider that the GI one and has to be ground off a bit on each side to fit or modify the bracket slightly wider.

(Looks like I have some rust issues starting that need some attention with a paint brush! It never ends)














Cat Man

Wow .......

Have had these brackets on the running boards of my 352 with the shovel and axe but did not know about the mattock the one I thought was original does not fit where it should go, it has a flat blade like an adds or the mattock bit bit the other end there is a axe type blade not a pick ?? still a very useful tool though..

Could Cat Man post a few very close up pics of the original one wing wing nuts, I suppose they are a cast type or forged ?

Hey all,

I received word from an acquaintance that he has some NOS lopsided wing nuts available. I asked about 20-30 of them and he said 30 would be no problem. He didn't offer a price yet, but as they are from overseas, I thought a group buy was in order to save him having to send 20 or 30 separate packages. as soon as I hear back from him, I'll post the info. a couple of you have already indicated an interest in several. I don't think I'll have any trouble moving 30 of them pretty quickly!

Mmmmmmmmm very interested in them, if they are the right ones, but depends on the price as always !!!!!!!

"Rust NEVER rests..."

Hello Retro, Did you get any joy with the proposed group purchase of those wing nuts ? I would sure like to get in the queue, if at all possible. Regards Erb