I can't say for certain whether they ship a forklift, but the IBM P7 775 HPC systems that used to use the same 26" racks as whatever was the then z system (z196?) came with a device called a 'lift tool" (which was basically a large trolley with a scissor lift incorporated in it) , and also had wind out rails to allow you pull the drawers out of the rack more gently than just tugging them. But removing the drawers from the racks was a relatively unusual operation, as much of the work could be carried out with the draws in-situe, as may of the replaceable units pulled out from either the front or rear of the drawer.
These were both powered using a meaty Makita rechargeable hand-held power drill which was actually part of the maintenance kit.
When we got the original details through, there was supposed to be a powered tow unit to move the racks, but when they were delivered, they resorted to old-fashioned muscle power to move the racks (although 3.5 metric tonnes per rack, without the water, was quite heavy, and creased the aluminium load spreading sheets that were used to prevent damage to the suspended floor).
I'm sort of interested in how they power these new systems. For full-blown z-systems, there is a thing called a "Bulk Power Unit" at the top of the rack that conditions the power and provides multiple-redundant power conversion and regulation from whatever is the local supply voltage (normally three-phase, of course) to what the system actually needs (I think it was 48 or 64 volts DC). This BPU is 'intelligent' in that it had it's own redundant service processor pair in it, and is controlled and monitored from the Hardware Management Console.
I wonder what they do for these 19" rack-mount units.