Maintain all aspects of equipment according to company standards. Handle basic maintenance of the truck including filling tank with fuel, checking oil, keeping it clean, and making sure required inspections are performed and documented as assigned. Manage inventory control on the service truck and for keeping the vehicle properly stocked. Report to the Service Manager and will be assigned duties on a daily basis. Maintain availability for after-hours service calls and be available for an open work schedule. Maintain and inventory the supplied tools for the work required in maintaining diesel engine trucks and associated equipment. Read job order and observes and listens to vehicle in operation to determine malfunction and to plan work procedures. Utilize various diagnostic equipment to determine malfunction and utilize available technical information to determine and perform correct repair procedure. Diagnosis, removal and replacement of injectors, pistons, liners, cam shafts, cylinder heads, rod and main bearings, oil pans, clutches, fan hubs, differentials, fifth wheels, brakes, changes or recharges batteries, and replaces transmissions and other parts. Perform all necessary diagnostic and documentation functions on the company computer system. Examine protective guards, loose bolts, and specified safety devices on trucks, and makes adjustments. Lubricate moving parts and drives repaired vehicle to verify conformance to specifications. Perform preventative maintenance work as requested. Document and submit necessary paperwork or enter into mobile service program as work performed in an accurate and timely manner. Respond to customer inquiries regarding the work. Foster positive customer relations. Advise customer and/or service writer of any repairs or services which should be performed within the next 3 months. Participate in training and utilize that training in the course of work.