Job Description

Position Summary
The Maintenance Technician III is a fully qualified industrial maintenance technician who independently diagnoses, repairs, and maintains production equipment in various areas, such as, sheet metal, welding, forming, and machining operations. The position handles routine through moderately complex mechanical and electrical failures, completes preventive maintenance, supports equipment reliability, and documents work in the computerized maintenance management system. The technician works within the direction of the Maintenance Lead and Maintenance Manager, assists the apprentice as appropriate, and escalates advanced controls, CNC, spindle, servo, and major equipment failures when specialized support is required.

Essential Duties and Responsibilities

• Troubleshoot, repair, install, adjust, and maintain CNC machining centers and lathes, hydraulic forming presses, press brakes, welding and fabrication equipment, air compressors and dryers, pumps, chillers, and related auxiliary systems.
• Diagnose mechanical, electrical, hydraulic, and pneumatic failures using safe, systematic troubleshooting methods, technical manuals, schematics, drawings, machine history, and appropriate test instruments.
• Perform assigned preventive and predictive maintenance, inspections, lubrication, adjustments, component replacement, and equipment condition checks according to established schedules and procedures.
• Respond to corrective work orders and production equipment breakdowns; restore equipment safely and efficiently while communicating equipment status, repair needs, and expected next steps.
• Complete routine through moderately complex repairs independently. Assist the Lead with major repairs, precision work, advanced diagnostics, installations, shutdown projects, and OEM or contractor support.
• Enter accurate labor, failure, repair, parts, and follow-up information in the CMMS. Close assigned work orders promptly and identify recurring failures or opportunities to improve PM tasks and equipment reliability.
• Inspect repaired equipment, verify proper operation, reinstall guards and safety devices, and return equipment to service only after confirming a safe operating condition.
• Provide task-level guidance and practical support to the maintenance apprentice when assigned. This responsibility does not include formal supervisory authority.
• Maintain tools, test equipment, work areas, and spare parts in an orderly condition and support 5S and housekeeping standards.
• Coordinate professionally with production, quality, engineering, EHS, vendors, and outside service technicians to resolve equipment issues and minimize downtime.
  Perform other duties as needed.

Electrical and Controls Responsibilities

• Safely troubleshoot and repair 480 volt three-phase and lower-voltage industrial electrical systems, motors, motor starters, contactors, overloads, relays, control transformers, fuses, circuit protection, and control circuits.
• Diagnose VFD, sensor, proximity switch, limit switch, solenoid, interlock, and machine-control faults; read and interpret electrical schematics and wiring diagrams.
• Use multimeters, clamp meters, insulation testers, and other diagnostic instruments correctly and safely. Follow applicable electrical safe-work practices and escalation requirements.
• Perform basic PLC input and output diagnostics when qualified; PLC troubleshooting experience is preferred but is not required.

Mechanical Hydraulic and Pneumatic Responsibilities

• Diagnose and repair pumps, cylinders, valves, manifolds, seals, hoses, fittings, accumulators, regulators, actuators, and related hydraulic and pneumatic components.
• Maintain and repair bearings, gearboxes, couplings, shafts, belts, chains, sprockets, mechanical drives, lubrication systems, guards, and machine assemblies.
• Perform alignment, adjustment, disassembly, replacement, reassembly, and functional testing using appropriate hand tools, power tools, precision instruments, lifting devices, and safe rigging practices.
• Basic welding and fabrication capability for equipment repairs or modifications is preferred but is not required.

CNC Equipment Support

• Independently troubleshoot machine alarms, switches and sensors, coolant and lubrication systems, hydraulic and pneumatic systems, pumps, chillers, and associated electrical or control problems.
• Support safe recovery, verification, and return to service after maintenance. Escalate advanced CNC control, servo, spindle, programming, parameter, and OEM-specific issues to the Level III Lead, management, or qualified outside service.

Safety and Compliance

• Follow Weldmac safety rules, EHS procedures, lockout tagout requirements, electrical safety practices, PPE requirements, machine-guarding standards, and safe lifting and rigging procedures.
• Recognize unsafe conditions, stop work when necessary, protect employees and equipment during maintenance, and promptly report hazards, incidents, and damaged safety devices.
• Handle oils, coolants, cleaners, and other maintenance materials according to labels, safety data sheets, and environmental requirements.

This role is required to be on-site 4 days at the El Cajon, CA location Tuesday-Friday.