Mark @ Everlast
Advertiser
A weldable collar type jack would probably worked better in this situation.
Add 2 triangular braces on each wheel as shown?
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----------------------------------------------------------------------I'm looking at the pix and thinking that the welds holding the jacks bracket to the square tube are what broke. They have good length front to back, but not much to hold them from side stress. For some reason I don't think he welded the round tube of the jack. I'm thinking he needs to install a side gusseted plate to the top of the square tube to bolt the jack to.
The whole 3ph mechanism will rise all the way to its stop before the top illustration happens. Only extreme circumstances are sufficient to cause this.
larry