Land Rigs - 2006 ATLAS-COPCO Model RD20 III Top Head Drive Rig, S.N. 21016. ATLAS COPCO Model 4SF-2-12 Spur gear rotary head drive. Air and /or mud circulation capability. 30,000# pull down capacity. 120,000# Pull back capacity. POWER: CATERPILLAR 3412 rated at 760 horsepower, S.N. BDT04828 complete with all necessary gauges, controls, radiator and coolers to make complete. Unit is master skidded. (Engine rebuilt by Cleveland Brothers Caterpillar, 4/2010) Current indicated hours of operation, 4,337. Air/Drill pipe, dog house. etc. Currently drilling.