How do you use a jack? How to use jacks

Before using a jack, it is necessary to understand the limit value of this jack in case the support is not enough to cause accidents, and it is best to use it exclusively for special vehicles. When using jacks, you should try to choose a hard level ground, and then fix the vehicle, turn on the double flashing lights, and place warning triangles. When in use, the lifting part of the jack must be aligned with the support point of the chassis to prevent slipping.

After the vehicle is slowly lifted, the spare tire of the vehicle can be placed under the car to prevent the vehicle from falling off when the jack fails.

Before using a jack to lift a car, the vehicle should be parked on flat, solid, level ground to prevent the vehicle from sliding or the jack from tipping over. Generally speaking, after parking, the vehicle can be stopped without braking, and the vehicle is not moving.

I believe that everyone is already very familiar with the jack as a vehicle-mounted tool, and when we change the spare tire, we need the jack to come in handy. But for some novices, they may not have a deep enough understanding of this thing, and they don't even know how to use it. So, how exactly is a jack used, and how does a jack work.

Steps for the correct use of the jack:

1.First of all, before using the jack, the car needs to be parked and the safety triangle is placed 50-150 meters from the rear of the vehicle. Of course, we also need to turn off the car to avoid the phenomenon of the jack slipping due to engine vibration.

2.Then use the jack to aim at the support point at the bottom of the car, as for the fulcrum, you need to mark the position (near the side skirt) according to the car manufacturer, after all, the design of each car is different.

3.Finally, it is time to use the jack, connect the matching wrench and sleeve to the back of the jack, and then rotate directly to control the height of the jack. But we must not use too much force when operating, otherwise the jack will easily deform.

How the jack works:

Jacks are divided into mechanical jacks and hydraulic jacks, and their principles are different. Let's talk about the mechanical jack first, in the past, the handle was repeatedly wrenched, and the claw was pulled to promote the ratchet clearance rotation, and the small bevel gear drove the large bevel gear to rotate the weightlifting screw, so that the lifting sleeve could be lifted freely. As for the principle of hydraulic jacks, it is based on Pascal's law (the pressure of the liquid is uniform everywhere).

In a balanced system, different sizes of pistons can keep the liquid still by applying different pressures. Then by the transfer of liquid, different pressures at different ends can be obtained, so as to achieve the transmission of force.

1.Find the position of the top pillar of the car under the square chassis of the car.

2.Slowly raise the jack into the card slot.

3.Then use the afterburner rod to slowly lift the car up.

4.The other one can be used to top the steel plate under the chassis. Note that in the place where there is no top column, the chassis pressure can not stand the chassis will rot, especially the van can not top the side, in the top beam.

5.When the jack is to be lowered, use the afterburner rod to rotate to the left and put the jack down.

Jacks have a limit load value when they are designed, and we must know what this limit value is before using it, in case the support force is not enough to cause accidents. Generally, at the edge of both sides of the vehicle chassis near the position of the tire, there will be a support point for the jack, and the support point of the family car is usually on the inside of the side skirt, like the 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.

Jacks are mainly used to lift or push heavy objects, and their use methods are usually as follows: 1Place the 1000-hand nuclear jack flat on the ground or a stable surface, making sure the four feet are in balance.

2.Adjusting the height of the jack so that the center of the top platform is perpendicular to the center of gravity of the weight ensures the stability of the jack. 3.

Manually turn the handle to lift the piston at the bottom of the jack so that the top platform is in contact with the weight and supports it. 4.If you need to continue lifting the weight, you can turn the handle of the jack with a tool such as a hand or wrench until the weight reaches the target height.

5.When removing heavy objects, the piston at the bottom of the jack should be slowly loosened to make the heavy objects slowly lower to prevent accidents. It should be noted that when using the jack, we must pay attention to its use conditions and restrictions, do not exceed the rated load of the jack, to ensure its stability and safety, and should be cleaned up and maintained in time during daily maintenance to ensure normal use.

How to use jacks, I believe many friends have also encountered this similar problem, so how to solve this kind of problem? Let's share the solution to this problem with you, I hope it can help you.

Before using the jack, you need to stop the car, pull up the hand brake, and then turn off the engine.

After the cherry blossom is closed, the jack must be used on a hard and smooth road, if the car section is a relatively soft road, such as a dirt road or a sandy road.

Before using the jack, it is recommended to use a wooden or slate pad under the jack to operate.

Reduce the pressure to prevent the jack from sinking into the soft ground.

Generally, there will be jack support points on both sides of the edge of the vehicle chassis near the tires, and the jack must not be supported on the steel plate of the chassis.

The jack rocker arm of many family cars is split structure, which needs to be rotated after being connected with the matching wrench tube, and the force is uniform in the process of lifting the jack, and it should not be too violent.

Before using the jack, park the vehicle on a flat and strong surface, or place a flat and strong wooden board or brick under the jack. 2. Fix the car. For vehicles with manual transmission, pull the handbrake and put the gear in first gear or reverse.

Vehicles with automatic transmission can directly pull the handbrake to engage the P gear. 3. Place the tripod. Place a tripod 50 meters behind the car, or 150 meters if you're on a high speed.

4. Find a support point. At the edge of both sides of the chassis near the tire, find a recessed piece of support point, and place the jack on the virtual liquid mark of the support point, do not skew. 5. Jack up.

Rotate the joystick clockwise to lift the jack, and if you rotate counterclockwise, you can loosen the jack. Hopefully, this service will help you <>

Hello dear, a jack is a tool used to lift heavy objects, and it can usually be used by following these steps: Place the jack under the weight that needs to be lifted, making sure that the bottom of the jack is stable and vertical. Find the handle on the jack and pull it up or push it to let the jack start to rise.

The front grip continues to operate the handle until the jack lifts the weight to the desired height. Pay attention to ensure the stability and operation safety of the jack. When you're done with the work, let go of the handle, slowly lower the jack to the bottom, and then move it away.

It should be noted that the corresponding safety operation procedures should be followed when using jacks, especially for larger heavy objects, multiple jacks or professional lifting equipment should be used to ensure the safety of operation.

The usage of jacks is as follows:The starting jack should not be rushed, it should rise at a uniform rhythm and descend slowly; When placing a jack on soft ground, a wooden block should be padded under the jack to avoid being tilted and tilted after the force. When the weight is raised, the support skids should also be placed under the weight at any time, but the hand should not enter the danger zone by mistake; The jacking height of the jack should not exceed the effective jacking stroke.

When lifting large objects, such as the girder, the two ends should be separated from the lifting, one end of the lift, the other end must be solid, padded, stable. Jacks are not allowed to be overloaded. A flat and solid road surface is the basis for subsequent operations, because if the vehicle is not flat, it is prone to displacement and accidents after lifting.

The jack lifting part must be carefully supported to the chassis support point, otherwise the vehicle will be unstable.

Precautions for the use of jacks:1. Before use, check whether all parts are in good condition and whether the oil is clean. It is strictly forbidden to use the safety bolt of the hydraulic jack when it is damaged, or when the thread and rack of the spiral and rack jack are worn by 20%.

2. The jack should be set in a flat and solid place, and be flattened with a skid.

3. The jack must be perpendicular to the load surface, and the nuclear oak between the top and the contact surface of the heavy object should be added with a non-slip cushion.

4. It is strictly forbidden to overload the jack, not to lengthen the handle, and not to exceed the specified number of people.

5. When using, no one is allowed to stand in front of the full bolt next to the safety and filial piety.

Summary. 1.Place the jack under the car and lift it.

2.When the bottom of the jack is in contact with the chassis, you need to check if the support is in place. Once fixed, proceed.

3.Keep it steady and slow until the car is lifted to the right angle. 4. In the process of jacking the jack, the force should be even, avoid too fast or too violent, otherwise it is easy to be damaged.

1.Place the jack under the car and lift it up. 2.

When the bottom of the jack is in contact with the chassis, it is necessary to check that the support is in place. Once fixed, proceed. 3.

Keep it steady and slow until the car is lifted to the right angle. 4. In the process of jacking the jack, the force should be even, avoid too fast or too violent, otherwise it is easy to be damaged.

When using the jack, please pay attention to the following: 1. Do a good job of safety warning measures. After the vehicle is parked, the necessary safety measures such as turning on the double flashing lights and placing the warning triangle cannot be ignored.

2.Pay attention to the bottom of the fixed jack. When we use jacks, we must pay attention to the situation of the ground, and try to choose a suitable ground for the fixed operation of the jack.

If the vehicle is on a soft road, we can put a large and hard support under the jack, such as wooden planks, bricks, etc. to assist in securing the jack to the ground. 3.

Align the vehicle chassis support points. The support point of the family car is generally on the inside of the side skirt, like the remaining two fins on both sides of the chassis, about 20cm behind the front wheel, and about 20cm in front of the rear wheel. This fin protrudes from the steel plate of the chassis and can withstand relatively high pressure relative to other places.

The lifting part of the jack must be aligned with the support point of the chassis to prevent skidding, otherwise it is difficult to fix the vehicle, which is easy to cause the jack to slide, damage the jack, and even damage the vehicle chassis.

Summary. We must understand a few things before using the jack, the first is on the open road, the warning triangle must be placed behind the car to warn the rear car that your car has broken down, the second is to ensure that the road surface is solid and the place where the car is parked is relatively safe, do not be a slope or the uneven ground, if the road surface is soft, the jack may sink out of the force, the car may fall down and cause the loss of the car or the damage of personnel, If you have a slope, the car may slide.

We must understand a few things before using the jack, the first one is on the open road, you must place a warning triangle behind the car, warning the rear car that your car has broken down, the first megavolt two, when using the jack, to ensure that the road surface is firm and the place where the car is parked is relatively safe, do not be a slope or the uneven ground, if the road is soft, the jack may sink out of the force, The car may fall and cause damage to the car or damage to people, and the car may slide if it is sloping.

Make sure the car is in P gear before using the jack, don't hang it in neutral if it's a manual transmission, and then tighten the handbrake. At the same time, before using the jack, make it clear that you have a clear load-bearing weight of the jack, different models of different cars are different from the jack with the silver, Brother Meow does not recommend mixing, and then the jack should be used when the position of the bottom of the car should be found, generally there will be two gaps at the bottom of the car, this position is the card position of the jack, after finding the card position, the jack will be lifted up before rolling, so that the jack bayonet is just stuck in the middle of the groove protruding from the two notches.

If there is something nearby, there is a stone slab, an empty brick or something like that, put it in front of and behind the tires on the other side, to prevent the car from sliding, and if there is a wheel blocker, it is better, that is more reliable and safe. When it comes to this collapse, on the premise of ensuring the safety of the banquet, use the shaking hand to lift the jack, and don't rush and take it slow in the process of rising. Of course, no one can be left on the car during the roofing process, and the door must be closed.

We are happy to answer for you: 1. Operation step 1, place the jack on the flat ground to ensure its safety; 2. Place the object on the gripping port of the jack; 3. Pull the lever of the jack to make the gripping mouth of the jack grasp the object; 4. Grasp the object at the gripping port of the jack, and then place the joystick on the gripping port to ensure the safety of the object; 5. Move the jack to the desired position; 6. Pull the lever to loosen the object from the gripping mouth of the jack; 7. Move the jack to its original position, empty the ant and then put away the jack, and use the answer button.