Apple Technician Guide[1]
Battery replacement
iMac Intel 24" EMC 2111 PRAM Battery Replacement
RAM replacement
iMac Intel 24" EMC 2267 RAM Replacement
Hardisk to SSD
How do you upgrade the hard drive in the "Original/Mid-2007," "Early 2008," "Early 2009" and "Mid-2009" (20-Inch and 24-Inch) Aluminum iMac models? What type of hard drive do they support? Can you swap the hard drive for an SSD?
Hard Drive or SSD Upgrade Instructions
iMac Intel 24" EMC 2267 Hard Drive Replacement
2014 - 24-Inch iMac (2007-Early 2009) Hard Drive Install Video
Hard Drive or SSD Upgrade Instructions
iMac Intel 24" EMC 2267 Hard Drive Replacement 2019 - Early 2009 24 inch iMac power supply replacement