Strikers also report that some work within the plant may be abolished for good. “Caterpillar told us they were moving the fuel tank line to Mexico, then we found out it has been moved to a local warehouse for non-union labor to do.” A worker drove by the reported location, a nondescript building in an industrial park away from the strike, and found private security posted outside the warehouse, similar to the security at their strike. http://www.wsws.org/articles/2012/jul2012/illi-j19.shtml
And the so-called Terex electric truck line is moving from Mexico to the Decatur (IL) plant. I think that is the 130 ton models on up. But then the 785 electric is not selling so I do not see much boost in that move. With quarry truck and 100 ton truck sales softening one can smell a lay-off.
Put your tail between your legs. There never was a fuel tank line in Joliet. Only a hydraulic tank line that was destined for Mexico a few years back. Also part of that is still in Joliet. Your sources of info are really poor.
The hydraulic tank assembly operation is moving to Mexico to free up floor space for Truck Components. Bolted cylinders are moving to Sumter SC for the same reason. Joliet is now land locked due to short sighted planning and they need more space for the ever expanding truck component business. So something had to go.