Automobile machinery maintenance workers include: electrical maintenance tools, tire maintenance tools, lubricating equipment and tools, engine maintenance tools, car body interior maintenance tools, chassis maintenance tools. Specifically, there are: electrical maintenance tools: mainly battery maintenance, including automobile test pens, battery connecting wires, battery chargers and battery derusting pliers; Tire maintenance tools: mainly jack, air cannon wrench, air cannon sleeve, tire wrench, tire patch, rubber cleaning agent; Lubrication tools: mainly grease gun, grease barrel, grease gun nozzle and oil pot; Engine maintenance tools: filter wrench, belt wrench, spark plug sleeve, timing tool, piston ring pliers; Body internal maintenance tools: sheet metal hammer, sheet metal lining iron, sheet metal shaping file; Chassis maintenance tools: there are repair horizontal plates, sleeve sets, bearing pullers and pullers.