this week we started taking apart a 3 cylinder deutz motor with a broke connecting rod and a hole in side the motor. we took off the head oil pan and all the pistons and started to take out the crankshaft. we saw that there was alot of scaring on the crank shaft and in the cylinder. This was probably causes by not enough oil. I learned how the oil travels on this motor becuase it is completly cooled by oil there is not antifreeze cooling it. I learned what happens when a connecting rod breaks I see a several motors before were this happened but I have never looked closer and what happened.