Make sure to have three people operate the server removal procedures to prevent injury.
Watch the procedure. A video of the installation and removal process is available: 
•  YouTube: 
https://www.youtube.com/playlist?list=PLYV5R7hVcs-BXei6L6c05osQVLt4w5XYx
•  Youku: https://list.youku.com/albumlist/show/id_59636529
Procedure
Step 1.  Loosen the two thumbscrews located on the front of the server to disengage it from the rack. 
Rack front
Figure 69. Disengaging server from the rack
1
Thumbscrew
Step 2.  Hold the mounting ears on the front of the server; then, slide the server all the way out until it stops. 
Figure 70. Pulling out the server
Chapter 4. Hardware replacement procedures 125