Views: 0 Author: Site Editor Publish Time: 2024-07-18 Origin: Site
1. The vehicle-mounted simple jack must be used to support the vehicle body at the specified support position, and the applicable support point should be clearly marked on the vehicle book. There are special support points at the bottom of the body to support the jack. The support points of family cars are usually on the inside of the side skirts, like two fins on both sides of the chassis, about 20 cm behind the front wheel and about 20 cm in front of the rear wheel. This fin protrudes from the steel plate of the chassis and can withstand relatively large pressure. If the jack is supported on the steel plate of the chassis, it may cause unnecessary damage to the chassis. In addition, supporting the lower arm of the suspension is also an incorrect operation. If the jack causes the vehicle to slip and fall, the chassis and jack will be damaged.
2. The vehicle-mounted simple jack is not designed to withstand lateral forces. Therefore, it should be used on non-inclined ground. If it must be used on a road with a certain slope, it must be ensured that the body cannot move after being supported.
3. The vehicle must be parked before using the jack. If the vehicle is not completely fixed before lifting, the vehicle is likely to slip during the support process. Once the car slips off the jack, the damage to the tool is still secondary. If the maintenance personnel under the car are injured, it should be excessive.
4. "Small car" jacks cannot be used for "big cars". Jacks can generally be divided into rack jacks, screw jacks, hydraulic jacks and inflatable jacks. Rack jacks are common in jacks equipped with family cars, because of their light weight and small size, they can be placed. However, due to the limited weight of the bracket, it is usually installed in family cars weighing about 1 ton. Manufacturers generally equip jacks according to the weight of the model. The jack load of ordinary cars is less than 1.5 tons, while off-road vehicles are usually equipped with jacks of about 2.5 tons due to their own weight. Therefore, large cars must not use the jacks of small cars when repairing vehicles to avoid safety hazards.