This machine can be upgraded from a 200,000 lb to a 400,000 lb in one week. It is powered by a 600 HP Cummins which drives two 250cc Sunstrand closed loop pumps, one for push/pull and one for rotary. At the rear of one pump there is a 56cc open circuit pump which drives all … Continue reading Gallagher HDD 200/400 Directional Drill