Views:8 Author:Site Editor Publish Time: 2021-06-10 Origin:Site
Analysis of the five key points of the electro-hydraulic jack: The electro-hydraulic jack must be used on a hard and flat road. If it is a relatively soft ground, such as a dirt road or a sandy road, it is recommended to use a wooden board or a stone slab to pad under the jack before using the jack. Operate again to reduce the pressure to prevent the jack from sinking into the soft ground. 1. It is very important to completely fix the car and then support the car. If the car is not completely fixed before the support, then it is very important during the support process. It may be caused by the sliding of the vehicle, causing the vehicle to fall from the jack, and the tools may be damaged, and the personnel may be injured. The correct operation method of fixing the body: 1. Pull up the handbrake on the manual transmission model, and hang the transmission at the same time. Gear or reverse gear (don't forget when you start again); 2. The automatic transmission model also pulls up the handbrake, and at the same time the gearbox is placed in the P position. 3. Put the jack under the car for lifting operation because the jack of the family car is often A wheel is separately supported, so if it is parked on a sloped ground, the relative position of the jack to the body may change after the jack is raised. The angle change will be greater on a slope with a larger angle, and it is easy to slip or slip off. Damage. If the location of the fault happens to be on a slope, it is recommended to use tools such as bricks or wood to jam the wheels to prevent them from sliding. 2. Use a soft pavement with a pad. The jack must be used on a hard and flat pavement, if it is relatively soft On the ground, such as a dirt road or a sandy road, it is recommended to use wood or stone slabs to pad under the jack before operating to reduce the pressure to prevent the jack from sinking into the soft ground. Before supporting the vehicle, if the vehicle can still Move, try to find a flat and solid ground support. In the case of sandy soil or even desert roads, when using the jack, be sure to use a relatively large wooden board under the jack. 3. Be sure to support it on the support point of the chassis. When jacking, it must be supported on the dedicated support point of the body chassis. The support point of the family car is usually on the inside of the side skirt, like two fins on both sides of the chassis, about 20 cm behind the front wheel, and the rear wheel. The front is about 20 cm. This fin protrudes from the chassis steel plate and can withstand relatively large pressure. If you do not follow the correct operation, the jack is supported on the chassis steel plate, it is likely to cause unnecessary damage to the chassis, and also support It is also incorrectly operated on the suspended lower arm. If the jack slips and the vehicle falls, the chassis and the jack will be damaged. 4. Lifting must be stable. The jack rocker arm of many household cars is a split structure and needs to be matched. The wrench and the casing are connected to rotate, so in the process of lifting the jack, the force should be even, and do not use too fast or too strong, and the haste will not be reached. If the jack is knocked and damaged during the lifting process, it may be damaged. Even the opportunity for secondary support is gone. 5. Use tires for insurance. I also need to remind that the use of such a truck-mounted jack is only to support regular tire replacement or inspection suspension, and cannot replace the lift for substantial maintenance work. It is strictly forbidden Put your body or arms under the car to avoid danger. After the jack is fully lifted, the spare tire or the removed tire can be placed under the body to make a temporary insurance. Even if the jack has a problem, it will not cause greater losses.