... of brand CHANA TRUCK, the main transmit, transmission power, gear box, sets of windlass, mud pump, slurry pump, mast are set up ... of drilling rig comes from the truck engine, the rig sets up distribute implement and hydraulic system.5. We can upset ... mechanical, the four jacks and mast are hydraulic operated. Distribute box, sewage pump, master driving clutch system are air operated.9 ...