REPLACING THE BLOCK HEATER IN A CAT 3116 DIESEL ENGINE

The 3116 diesel engine has a convenient coolant drain plug at the rear of the block on the same side as the engine[1500 Watt] block heater.
All you have to do is pry out the block heater with a bar, sometimes it is necessary to clamp on to the heater with vise grips and twist it side to side to free up the o-ring from the block. Clean the block bore and install the block heater at the twelve o'clock position. Torque retainer bolt 20 to 25 in. lbs.