Vehicle repairs are uneven, so when you receive the repaired vehicle yourself, you must learn to self-check to understand the status of vehicle maintenance: â—† When the vehicle is stationary, check the vehicle and park it on a flat road surface. Check in the following order: (1) Observe The exterior of the vehicle stands in front of the vehicle to see if the cab, hood, left and right leaves, front bumpers, etc. are level. If it is uneven, there are usually the following factors: inconsistent left and right tire pressure, left and right springs and shock absorbers, deformation of the frame or the leaves. (2) Check if the bumper and towing hook are securely in front of the vehicle, and if the radiator guard, engine hood, fenders, and driver's cab are uneven or cracked, if the connecting bolts are firm, and if the headlights are installed securely. (3) Enter the cab to check whether the door switch is light, whether the window glass is lifted or lowered, whether the foot pedal is firmly installed, and whether the front windshield is cracked. (4) Observe whether the carriage is level after going to the car and whether the rear lights, brake lights, and license plates are installed securely. (5) Check the fastening of the fuel tank and spare wheel bracket. (6) If it is a vehicle that sprays and paints, check whether the color of the paint surface is even, whether there is the phenomenon of dripping paint, blistering and so on. â—† Inspection during driving The purpose of the inspection is to inspect the overall performance of the components of the vehicle. The operation should be particularly careful and pay attention to safety. The items and sequence are as follows: (1) Before starting the drive, the engine should reach normal temperature and check once Instrumentation device operating conditions. (2) Check the clutch. Clutch should be completely separated, stable and reliable joint, no shaking, slipping, abnormal sound and so on. (3) Travel at a low speed for 2 to 3 kilometers, so that the temperature of the components of the chassis rises to normal and the lubrication is normal. Pay attention to whether or not the components have abnormal noise. Gently step on the brake pedal to test whether the brakes are flexible and effective, and then increase the speed. The direction should be light, flexible, and free of deviations, and there should be no "gone" feeling at high speeds. (4) Select the appropriate site, check the minimum turning radius of the vehicle, and the turning radius must meet the requirements of the original car. (5) When accelerating or decelerating, pay attention to listening to the sound of gearbox, clutch, transmission shaft and differential. Check requirements are as follows: Different gears and different speeds are allowed to have different slight sounds, but Never allow a knock; in any gear, when the speed suddenly changes, it allows the gear to have a momentary knock; the drive shaft can't make noise when it is running normally, but it can't convert the low speed when the driving power is insufficient. Allow sound when blocking. (6) Check if the gearbox has skipped. Rapid acceleration and loose oil can be known while the vehicle is moving.

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