Changzhou jianhua auto parts factory: how to maintain a car in daily life (III)

2019-07-02 Author：admin

　　Third, check
　　After fastening the connector, shell l should check the height and quality of the oil, because the liquid will gradually lose and oxidize at high temperature, resulting in the liquid level reduction and poor performance
　　1, check the battery level with a diameter of 5 N 6mm test tube, from the nozzle vertical force to contact with the filter, with the thumb closed the upper end of the test tube, lift the tube, measure the height of the liquid column is the battery level height, the standard should be 10 N 15mm.
　　2. Check the height of lubricating oil level
　　When cooling the car, take out the oil ruler, wipe it clean, insert the bottom of oil sump, observe its height should be between the upper and lower mark line. Hot car should be turned off, until all the oil into the oil sump after the measurement.
　　3. Check the height of coolant liquid level when cooling, the coolant in the water tank should be full, and the height of liquid level in the expansion tank should be between the marks. The liquid level should be slightly higher than the superscript
　　4. Check the level of brake fluid and steering fluid
　　Unscrew the bolt and observe the liquid level directly.
　　5. Check the quality of oil
　　No matter what kind of oil, can be used to check the following methods.
　　(1) appearance method: check the extracted oil sample. If it is relatively transparent, it indicates that the pollution is not serious; If it is foggy, there is water in the oil. If gray, it may be contaminated by lead or other abrasives. If it is black, it is polluted by high-temperature exhaust gas.
　　(2) diffusion method: drop the extracted oil sample onto the filter paper. If the diffusion is wide and there is no obvious difference between the oil drop area and the diffusion area, it indicates that the oil is clean. On the contrary, oil cleanliness becomes worse.
　　Four, supplement
　　1. Oil supplement
　　If there is no obvious deterioration of the oil during the inspection, it shall find out whether there is leakage, if there is any, it shall be eliminated, and make up the oil of the same level in time.
　　2. Oil replacement
　　If the oil deteriorates or exceeds the replacement period, it should be replaced in time.
　　Usually change the oil every 8000km or half a year; Change brake fluid every 20,000 ~ 40,000 km or 2 years; Replace the coolant once every 1-2 years; Change the hydraulic oil every year or ten thousand kilometers.
　　This paper is organized by changzhou jianhua vehicle parts factory