ENGINE AR 1107949 - Caterpillar

The CCM contains a 101-1785 Battery that supplies power for internal memory whenever the CCM is powered down. The battery has an expected life of five years.The battery is mounted to the front plate of the CCM behind the display. To replace the battery, follow these steps:
Disconnect power to the CCM.
Remove the four screws that secure the front plate to the housing.
The battery is held in place by two small tabs. A tie wrap provides additional support.
Remove the tie wrap.
Use a small screwdriver to carefully pry one tab and lift that side of the battery slightly.
Repeat for the other tab and remove the battery.
The battery has one corner that is angled. This corner will ensure that the battery is oriented correctly for installation.
Carefully install the new battery into the holder.
Verify that the battery pins are entering the sockets of the holder properly. Insert the battery until the tabs are holding the battery.
Install a new tie wrap.
Install the front plate of the CCM.