PowerVault ML6000 Maintenance Guide 65
3 Open the 9U Expansion Module’s access door and raise the guide pin by pulling it up and turning it 
slightly, as if it were a screw. Otherwise, the guide pin may scratch the front doors of the module on 
which you are stacking it.
 
4 Lift the new 9U Expansion Module and, from the front of the library, place it in the desired location.
5 If there is already a module installed, secure the two modules together by tightening the two 
thumbscrews at the base of the front of the module and the two thumbscrews located at the base of the 
back of the module. Then lower the module’s guide pin (located at the base of the front of the module) 
by turning it and pushing it down.
6 Tighten all thumbscrews located at the base of the front and back of the modules.
7 Fasten the module to the rack with rack ears.
1 Guide pin
2 Thumbscrew