Mobile Mechanic: Rock Crusher & Plant Maintenance

Martin Marietta; Corona (CA); On-site; USD 48,000 - 62,000; Full time

Job summary

Martin Marietta in Corona, CA is seeking a maintenance technician to safely repair, maintain rock crusher machines and fixed plant equipment at operating sites. You will inspect equipment, diagnose malfunctions, and develop repair plans under moderate supervision.

The role emphasizes preventive maintenance, record-keeping, on-schedule work, and flexibility to take on additional tasks. Martin Marietta offers competitive benefits within a large national footprint.

Qualifications

• Mechanical analysis and troubleshooting experience required.
• Familiarity with OSHA and MSHA regulations.
• Ability to read blueprints and schematics for maintenance.
• Detail-oriented with good time management.
• Industrial maintenance experience preferred.
• Able to work with limited supervision and on-site safety protocols.

Responsibilities

• Inspect mechanical equipment and ensure code compliance.
• Determine malfunction causes and create repair plans.
• Repair equipment to full functioning capacity.
• Test systems and verify component compatibility.
• Keep maintenance records and manage parts used.

Skills

Mechanical analysis

Troubleshooting

Problem solving

Detail oriented

Time management

OSHA/MSHA regulations

Education

Vocational training or equivalent experience

Tools

Design tools

Mechanical diagrams & blueprints

Mechanical controls

Mechanical theory

Test equipment design

Job description

Martin Marietta in Corona, CA is seeking a maintenance technician to safely repair, maintain rock crusher machines and fixed plant equipment at operating sites. You will inspect equipment, diagnose malfunctions, and develop repair plans under moderate supervision.

The role emphasizes preventive maintenance, record-keeping, on-schedule work, and flexibility to take on additional tasks. Martin Marietta offers competitive benefits within a large national footprint.