Diesel Mechanic

Diesel Mechanic Mechanics/Maintenance Litchfield, Arizona Litchfield, Arizona Description JOB SUMMARY The Mechanic is a critical role responsible for the inspection, diagnosis, and repair of the Martin Marietta Ready-Mix fleet and mobile equipment. This position ensures that all concrete mixers, tractors, and heavy machinery (such as loaders and trailers) are maintained to the highest safety and performance standards. The goal is to maximize equipment uptime and operational efficiency through a combination of rigorous preventative maintenance and rapid-response corrective repairs in both shop and field environments. KEY DUTIES AND RESPONSIBILITIES Utilize advanced computer diagnostic software and precision measuring tools to troubleshoot complex engines, electrical, hydraulic, and pneumatic systems. Diagnose and repair specialized Ready-Mix equipment, including hydraulic mixer drums, discharge chutes, and computerized batch-control sensors. Conduct thorough inspections and repairs on truck air brake systems and steering/suspension components in strict accordance with DOT and company regulations. Execute routine PM services (oil changes, filter replacements, greasing) on a fleet of Ready-Mix trucks and support equipment. Cleans, lubricates, and performs preventative maintenance work on equipment and vehicles Troubleshoots and rewires electrical systems Dismantles and reassembles heavy equipment using hoists and hand tools, as needed. Overhauls and tests machines or equipment to ensure operating efficiency Perform comprehensive pre-trip and post-trip inspections to identify potential wear or damage before they lead to mechanical failure. Monitor and replace wear items such as rollers, liners, and hoses to ensure the longevity of the mixer units. Utilize welding (Stick/MIG) and cutting torches to repair truck frames, mixer drums, and plant-related stationary equipment. Accurately complete work orders, parts requests, and maintenance logs via digital or manual tracking systems to maintain a clear service history. Assist in monitoring parts inventory and identifying required supplies to prevent maintenance delays. Maintain a clean, organized, and safe shop environment; assist in the disposal of hazardous materials (oil, coolant) according to environmental standards. QUALIFICATIONS Education High school diploma, GED, or relevant experience, Trade School or appropriate Certifications Work Experience Minimum of 3–5 years of experience in heavy equipment or on-highway truck maintenance. Direct experience with Ready-Mix concrete trucks and their specialized hydraulic/mechanical components is a significant advantage. Knowledge, Skills, and Abilities General knowledge of heavy equipment operations, systems and components (engines, electrical, hydraulic, mechanical, pneumatic), repair methods, and common issues. OSHA regulations and compliance LOTO lockout/tagout Mechanical aptitude Technical aptitude Effective communication (written and spoken) Time management A member of the S&P 500 Index, Martin Marietta is an American-based company and a leading supplier of heavy building materials – including aggregates, cement, ready-mixed concrete and asphalt. Through a network of operations spanning 28 states, Canada and the Bahamas, dedicated Martin Marietta teams supply the foundational resources upon which our communities thrive. Martin Marietta's Magnesia Specialties business produces high-purity magnesia and dolomitic lime products used worldwide in environmental, industrial, agricultural and specialty applications. At Martin Marietta, we strive to work with the best and the brightest – those who have the potential to become our company's future leaders. Each of our roughly 9,500 people shares a common purpose regardless of their professional role or work environment. Together, we utilize our diverse skills and experiences to drive our company and its extraordinary culture forward. Our aim is to build on our foundation of success and help values-driven and hardworking people realize their full potential. When you decide to invest your career in Martin Marietta, you'll know what it's like to be respected, challenged and rewarded. In return, we offer a highly competitive benefits package, including: Medical Prescription Drug Dental Vision Health Care Reimbursement Account Dependent Care Reimbursement Account Wellness Programs Employee Assistance Plan Paid Holidays and Vacation 401(k) with Company matching Pension Salary Continuation – Short-Term Disability Long-Term Disability Options Employee Life Insurance Spouse & Dependent Life Insurance Business Travel Accident Insurance Direct Deposit Payroll Educational/Tuition Assistance Plan College Scholarship Program – for dependent children Matching Gift Program New Auto Purchase Discount Plans At Martin Marietta, we are proud to be an Equal Opportunity Employer. We are committed to providing an environment of mutual respect where equal employment opportunities are available to all qualified applicants and teammates. We celebrate diversity and commit that qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.