Stress Fractures in Wagon Floor under Roller Draws

Can Do - wait out

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you say you are getting the "sub tank" replaced, it not cracked as well is it or is there another reason......

In short - another reason

Looks like a basic design fault with the drawers' mounting system to me.... they appear to have too-small a foot-print. What I mean is that (IMHO) they should have a larger base "foot" which would cover at least twice that area indicated by the rectangular indent.

It reminds me of the expensive PWR radiator I fitted to my GU Patrol many years ago. It was a beautiful piece of equipment and held about twice as much coolant as a standard radiator. However, on a trip to Cape York, the weight of it sitting on the 2 rubber base grommets, punctured the base of the tank and I had to have it welded in Seisa. It needed to have a larger/thicker base plate in that area where it sat on the 2 rubber base grommets. After being strengthened it was all okay.

So, I would recommend getting it welded up then alter the base plates before re-fitting the drawer set-up.

Good luck.

Roads over the last seven years are no more than the normal corrugations you get at Cape York, Birdsville track, Pilbara, Kimberly's. Vehicle in more than capable of handling these roads, so no dramas there.
Weight in the draws, probably around (40-50kgs in each draw, on top of the draw system 60kgs of water and another draw setup with around 10-15kgs in it. All this on the left side with fridge on the right, it weighing?
Amount of weight carried in and on the draw system would be around 200kgs. Not that heavy a load, however looking at the system setup at the fron,t the weight was supported by two poly blocks that are raised slightly more than the wagon floor.
For seven years the draw system has been sitting up on the poly blocks and trying to level itself against the floor, no wonder the weight of the draws was trying to force the poly blocks through the floor.