Trailer clarification and TM availability?

[dirtyfingernails]

I recently bought this trailer and can't find a TM for it. I also can't find any mention of such a trailer (M492A1 nomenclature) on google. This sure looks like an M353. Something is wrong because the M353 is a 3.5ton trailer and this one states 1.5 ton. Is a TM for the M353 available? If so, what is the number or location? Thanks.
Steve

 

[dirtyfingernails]

I found the TM for the M353 in the manuals section. Still don't have a clue what a M492a1 is though.

 

[Elwenil]

http://www.tpub.com/content/logistics/23/30/00-832-8802.htm

Looks to be a chassis for a 400 gal water tank.

Page 5-8:
http://72.14.205.104/search?q=cache...pdf+tm+9-2330-267-14&hl=en&ct=clnk&cd=1&gl=us

 

[jasonjc]

The new lube trailers look like a 3/4ton I think. The tag on that trailer does not look like the trailer in your pic?