Performs preventive maintenance and repairs on transport refrigeration units (TRU) according to original equipment manufacturer (OEM) procedures; maintaining and repairing refrigeration trailer interior walls, floors, doors and accessories (e.g., bulkheads, evaporator guards and remote controller); operating transport refrigeration unit (TRU) in normal, diagnostic and service test modes; diagnosing and repairing transport refrigeration unit (TRU) electrical systems using technical manuals and diagnostic tools (e.g., wiring diagrams, schematics, multi-meter, laptop and testers), transport refrigeration unit refrigeration system (e.g., reclaim/recycle, leak check solder, repair and recharge), and tractor climate control systems (e.g. auxiliary power units (APU) including heaters and air conditioning units) and communication systems using technical and electronic equipment. Maintains and repairs trailers in accordance with established procedures, which include electrical/wiring, lighting and light assemblies, landing gear, interior panels, roof repairs, tire seals, flooring, doors, and threshold plates. Performs preventative maintenance of tractor-trailer braking system components (for example, hydraulic, air, anti-skid, S-cam, ABS, EBS) in line with established protocols, including adjustment or replacement. Installs and dismounts tires onto/off wheels using tire tools/machinery (for example, tire machine, tire bar, wheel dolly); repairs flats and balances tires according to established protocols; and performs advanced axle alignments using electronic digital equipment (for example, Hunter/Beeline). Receives fuel drops and conducts fuel sampling, which includes monitoring the drop for safety compliance, adhering to fuel additives procedures, monitoring tank levels prior to and following the drop, collecting and preparing fuel samples for analysis and shipping, and completing necessary documentation. Correctly identifies and performs warrantable repairs by accurately entering condition, cause, and correction information into the maintenance system; completing warranty tags as necessary and ensuring parts are retained in accordance with warranty guidelines; and creating and processing warranty claims to ensure proper credit is received in accordance with company guidelines. Assesses maintenance, repair, and replacement needs; identifies needed parts and possible solutions; consults with others and chooses the best possible solution; conducts preventative maintenance and repairs on all Walmart equipment, including tractors, trailers, road trucks, shop equipment (air compressors, forklifts, wash bay) and service vehicles; performs repairs and replacements in accordance with company and Department of Transportation (DOT) guidelines and requirements; and completes work orders, records, logs, and other written or computer-based documents in accordance with established procedures. Assists other technicians with equipment repair and maintenance. Complies with company policies, procedures, and standards of ethics and integrity by implementing related action plans; using the Open Door Policy; and applying these in executing business processes and practices. Completes work assignments and priorities by using policies, data, and resources; collaborating with managers, co-workers, customers, and other business partners; identifying priorities, deadlines, and expectations; carrying out tasks; communicating progress and information; determining and recommending ways to address improvement opportunities; and adapting to and learning from change, difficulties, and feedback.