Removing the Liquid Cooler Heatsink:
Follow the procedures in Before Working Inside Your Computer:
Ensure that your work surface is flat and clean to prevent the computer cover from being scratched.
Turn off your computer (see Turning Off Your Computer).
CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device.
Disconnect all network cables from the computer.
Disconnect your computer and all attached devices from their electrical outlets.
Press and hold the power button while the computer is unplugged to ground the system board.
Remove the cover.
CAUTION: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted metal surface to dissipate static electricity, which could harm internal components.
Remove:
Left Cover
Memory shroud
Press firmly on the heatsink and rotate anti-clockwise.
Remove the heatsink fan cable from the system board.
Lift the liquid cooler heatsink and remove it from the computer.
Remove the screws that secure the heatsink bracket and remove the bracket away from the system board.
Installing the Liquid Cooler Heatsink :
Remove all the memory modules.
Install the bracket into the system board and tighten the screws.
Place the liquid cooler onto the bracket at 45 degree rotation.
NOTE: The tabs on the bottom of the heatsink must align with the bracket.
Connect the heatsink fan cable to the system board.
Press firmly on the heatsink and rotate clockwise.
Install:
memory shroud (center)
left cover
Install the memory modules.
Follow the procedures in After Working Inside Your Computer .
Replace the cover.
CAUTION: To connect a network cable, first plug the cable into the network device and then plug it into the computer.
Connect any telephone or network cables to your computer.
Connect your computer and all attached devices to their electrical outlets.
Turn on your computer.
If required, verify that the computer works correctly by running Dell Diagnostics.