1. For mechanical hydraulic type, always pay attention to the boosting oil in the storage tank. In addition, try not to beat the dead bend for too long. In addition, pay attention to whether it is heavy when turning, whether there is noise, etc. If this is the case, you need to check the problems like the oil pump V-belt, internal pressure, etc.
2. For the electro-hydraulic type, pay attention to the amount of booster oil at ordinary times. When the warning light is on, be sure to check.
3. Electric power assist system. Although the structure of this system is relatively simple, it cannot be seen through with the naked eye when it is maintained. If there is a problem of sinking direction and unwillingness, the solution is to measure with the instrument.