... the main drive system,Website:http://www.rejeedrilling.com, the transfer case, gearbox, double-winch unit, mud pump, turntable, drilling tower, feed ... with suitable drilling bit.3. The power of truck engine transfer to PTO, and then drive drilling rig.4. The main ... the four landing legs and drilling tower are hydraulic controlled. Transfer case and mud pump clutch system are air operated.5. According ...