Introduction
Replacing your lower case is easy! It only takes 10 screws.
Tools
Parts
- 
                  
                  
- 
            
Remove ten Phillips screws securing the lower case to the MacBook Air:
 - 
            
Six 2.8 mm screws
 - 
            
Two 3.8 mm screws
 - 
            
Two 5.4 mm screws
 
 - 
            
 - 
                  
                  
- 
            
Slightly lift the lower case near the vents and push it toward the rear of the computer to free the mounting tabs.
 
 - 
            
 
                            
                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.