Already having mtu engines in part of our fleet that performed reliably played an important part in our decision. Based on experience, we knew that mtu engines would result in good machine performance. Further, the standardization offered with these engines is a benefit when it comes to available stock of spare parts and training our maintenance crews.
Another factor that influenced the order of mtu engines was the power offered from the 12V 4000 C23 that U&M was able to test on its Komatsu 930 mining trucks.
“We prefer to have the same engine powering both our load and hauling machines,” Casara said. “We tested the mtu 12V 4000 C23 on a mine where we had Komatsu 930s equipped with 16V engines so we could compare. We found that the cycle times for the 16V and the 12V were virtually the same for that mine in particular.”