The trackpad replacement for the Acer Chromebook C740 requires removing the back panel, removing the battery, unplugging a ribbon cable, and removing several screws.
Place the chromebook bottom side up on a flat surface.
Remove the thirteen 7 mm screws with a Phillips #0 screwdriver.
Insert the plastic opening tool into the slit near the hinges and pry upwards to lift the back panel.
Applying pressure may be necessary. A click indicates the panel is ready to come off.
Unplug the white 8-wire battery connector from the motherboard by using a spudger to push the two L-shaped indentations towards the battery.
The connector is a tight fit. This process requires going back-and-forth between the two indentations and plenty of patience.
Remove the the two 3.7 mm screws with a Phillips #0 screwdriver.
Lift the battery from the frame.
Pull the black wire out from under the the black center clips and up from the gray outer clips with a spudger.
Use a spudger to lift the black clip on the small purple ribbon cable connector to the left of the touchpad.
Pull the ribbon cable out from the connector.
Remove the five 2.5 mm screws with a Phillips #0 screwdriver.
Remove the four 2.8 mm screws with a Phillips #00 screwdriver.
Wiggle off the silver bracket with your fingers.
Remove the black tape on the left side of the touchpad.
Lift off the black plastic cover with the plastic opening tool.