USMS Delta Wedge Preventative Maintenance

This preventive maintenance checklist guides technicians through servicing USMS Delta Wedge vehicle barriers. It covers safe lockout procedures, control function checks, raise and lower cycle verification, and securing the barrier. Steps include bleeding down the hydraulic system, inspecting cylinders for internal leaks, checking clevis pins and bearings, clearing debris from the foundation and drains, tightening top plate bolts to specified torque, and assessing paint and reflective tape. The checklist also directs replacement of oil filters, inspection of hydraulic hoses, accumulator pressure checks, starter overload tests, heater operation verification, relief valve adjustment to 2200 psig, and thorough HPU cleaning and oil top-up. Final sections capture electronic signatures for end-user and representative sign-off.