In this second and final part, we complete the Caterpillar D4 steering clutch and bevel shaft rebuild. Watch as we tackle ...

Cat stopped making on-highway truck engines due to shrinking profit margins, rising emission costs, and a limited market ...

In this second part of the D315 direct start conversion for the Caterpillar D4, we continue the process of upgrading and modifying the system for smoother, more efficient operation. Watch as we ...

Even BMW and Porsche aren’t making as much power from their comparable engines. Like the larger six-cylinder unit, this model punches above its weight, with six-cylinder levels of power and torque but ...