Job Overview. Job Description: BMH, LLC is a hydraulic repair shop located in Marne, Michigan and we are looking for a full-time Service/Bench Technician. What you’ll do. Tear down, size seals (will train), assemble and test hydraulic cylinders and valves. Basic welding for cylinder components. Demonstrates strong mechanical knowledge. Demonstrate proficiency with hand tools and shop math. Maintains a safe, clean working environment by complying ...