IBM 9080-M9S Manual page 620

Figure 536. Lowering the removal tool onto the system processor module
b) With the removal tool sitting on top of the system processor module, push down on the ring (A)
slightly so that the blue tabs (B) snap outward and the jaws engage with the system processor
module (C) as shown in the following figure.
Make sure that both of the tool jaws are locked onto the system processor module by pushing
down on the tool.
Important: Do not press the blue release tabs until directed to do so later.
614 Power Systems: Removing and replacing parts in the 9080-M9S system