At Hess Services, Inc. we have the experience, facility, and parts to rework all of your workover rigs, pulling units, and drilling equipment. We rebuild carriers, install cabs, motors, transmissions, gearboxes, and also have the ability to rebuild poles, derricks, and draw works. HSI was the first oil well service equipment manufacturer to design and fabricate a truck mounted well service rig with a square mast. Our service rig has proven to be one of the toughest and most reliable rigs on the market. Whether your rig needs some minor repairs or a complete rebuild, we can help. We also stock rig tooling and rubber products for various types of equipment.