Looking for a parts tm or some info on a Electric Wheel Model D-2540-S

[Big Mike's Motor Pool]

Trying to help a customer of mine find some wheel studs for an Electric Wheel Model D-2540-S 1909 M2 assault boat trailer.
From what I gather this is a WWII model, and I have never seen one except for the pics in the 2 links below.
Im looking for a TM on this model to try and locate the part number for the wheel studs. They are strange, as they are pressed in (according to my customer) but have a nut on the back side of them.

These links to what seems to be European websites are the only thing I could find on this trailer.

http://www.pbase.com/kees_s/image/83677792

http://en.valka.cz/topic/view/194033/Electric-Wheel-Model-D-2540-S

 

[Evil Dr. Porkchop]

I bought one of those a couple years back. I didn't have a use for it so I quickly sold it. I think it was post war (early 50s?) if I remember right. I never found a TM for it, there are also similar trailers with a square tube tongue instead of the round.

I also remember the goofy wheel studs with a nut on the backside. Mine had some like that and some that were normal. Probably the normal ones were changed in as there was a mixture of right and left hand threads on either side with a couple broken ones too.

 

[Big Mike's Motor Pool]

Thanks for the info, looking further I may try and size up some other studs for him like you mentioned. he tells me he is using it for a hay trailer and it probably wont see over 30 mph.