Truck and Trailer Mechanic

Join the Manke Trucking Team! Manke Trucking is a family-owned transportation company that has proudly served Southern California since 1976. We are seeking a skilled, dependable, and safety-focused Diesel Mechanic / Truck and Trailer Mechanic to join our maintenance team in Pomona, California. The ideal candidate has hands-on experience maintaining, diagnosing, and repairing heavy-duty trucks and trailers. We are looking for someone who takes pride in their workmanship, prioritizes safety, and helps keep our fleet operating efficiently and reliably. Job Summary The Diesel Mechanic is responsible for performing preventive maintenance, inspections, diagnostics, and repairs on heavy-duty trucks, trailers, and related equipment. This position requires knowledge of diesel engines, drivetrain components, electrical systems, brakes, suspension, and other mechanical systems. The mechanic will use hand tools, power tools, diagnostic equipment, and shop equipment to identify issues and complete repairs safely and efficiently. Key Responsibilities Diagnose, troubleshoot, maintain, and repair heavy-duty trucks, diesel engines, and trailer equipment. Perform preventive maintenance services, including oil changes, lubrication, fluid checks, battery inspections, and routine equipment servicing. Inspect, diagnose, and repair diesel and gasoline engines, transmissions, differentials, clutches, drive shafts, power take-off (PTO) systems, and wheel-end components. Diagnose and repair electrical systems, including starters, alternators, wiring, sensors, electronic control modules (ECMs/ECUs), and related components. Inspect, maintain, and repair brake systems, including anti-lock braking systems (ABS), steering systems, and suspension systems, including spring and air suspensions. Service and repair HVAC systems, cooling systems, turbochargers, fan clutches, fuel injectors, and other engine components. Inspect brake systems, steering mechanisms, wheel bearings, and other critical components to ensure proper operation and safe equipment performance. Identify required replacement parts for disassembled equipment and assist with parts sourcing as needed. Document repairs, maintenance activities, parts used, and recommended follow-up work accurately on repair orders and maintenance records. Identify potential warranty-related repairs and document findings appropriately. Prepare new equipment for delivery and perform mechanical reconditioning of equipment as needed. Operate shop equipment, including pneumatic tools, welding equipment, jacks, hoists, pressure gauges, and precision measuring instruments. Maintain a clean, organized, and safe work environment while following company safety procedures. Communicate equipment issues, repair progress, and maintenance needs to management. Perform other related duties as assigned. Qualifications and Requirements 2–4 years of hands-on experience in heavy-duty truck and tractor-trailer maintenance and repair. High school diploma or equivalent required. Valid driver's license required. Demonstrated proficiency in using hand tools, power tools, and shop equipment. Working knowledge of diesel engines, drivetrain systems, brakes, suspension, electrical systems, and preventive maintenance. Ability to identify mechanical problems, troubleshoot equipment issues, and complete repairs accurately. Basic computer skills for entering maintenance information and completing repair orders. Ability to read and interpret maintenance instructions, technical information, and repair documentation. Strong organizational skills, attention to detail, and time management. Ability to communicate effectively and work independently or as part of a team. Commitment to workplace safety, quality workmanship, and equipment reliability. Preferred Qualifications Vocational or technical training in diesel technology, heavy-duty truck repair, or automotive mechanics. Relevant mechanic certifications or specialized training in vehicle diagn…

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