The chassis is the most easily overlooked maintenance point, but it directly affects the driving safety of the food truck. After each use, especially after driving on muddy roads or by the sea, the chassis should be rinsed in time to remove sediment and salt. Check whether the chassis screws are loose once a month, and do a chassis rust prevention treatment once a year, which can effectively avoid rust and aging. Circuit system failure is one of the most common problems of outdoor food trucks. Check whether the wire joints are loose or aging every week, especially the lines near the kitchen equipment, which should be kept away from high temperature and oil pollution. The battery should be charged regularly to avoid over-discharging. When not in use for a long time, it is necessary to replenish the quantity of electricity once a month to prevent the battery from being damaged due to power loss. Appearance maintenance can keep the food truck "good-looking". The stainless steel surface should be wiped with a special cleaning agent, and avoid scratching with steel wool; wooden parts should be painted with waterproof paint regularly to prevent moisture and deformation; if the body stickers or paint are worn, repair them in time, which is not only beautiful, but also can prevent rainwater from seeping into the car body and causing damage.

The water tank and water pipes are the most vulnerable parts in winter. When the temperature is below 0℃, the water in the water tank should be drained in time, or special antifreeze should be added to avoid freezing and expansion causing the water tank to crack. After each closing, turn off the main water valve and open the faucet to drain the remaining water, especially in northern regions, this must be paid attention to. The battery capacity will drop significantly in low temperatures, and it may even fail to start. You can put an insulation cover on the battery, or choose a battery pack with heating function to ensure that the battery working temperature is above 10℃. Charging should be done indoors, avoiding charging in sub-zero environments, otherwise it will not only fail to charge fully, but also damage the battery life. The tires and braking system should also be checked points. Roads are prone to icing in winter, so the food truck tires should be replaced with snow tires, and the tire pressure should be kept at the upper limit of the standard value to increase grip. Check the brake fluid level and brake pad wear once a week to avoid slow response of the braking system due to low temperature and ensure driving safety.