jack is a steel member as a work of jacking means for jacking the spare tire when replacing the vehicle body. Through the top or bottom bracket claws in weight lifting stroke of small light lifting equipment. Jack is a lifting height of a small (less than 1m) of the most simple lifting equipment. Car jack for replacing the spare tire, the tire outside easy to replace bad.
1. Jack routine maintenance
1, such as runaway phenomenon occurs use, the oil discharge to loosen the screw pump, the pump head down vertically up empty few dozen and then tighten the oil drain screw, you can continue to use.
2, when used, should not be added partial load or overload, in order to avoid the risk of destruction of the jack. When a load, should not remove the quick connector, so as to avoid accidents and damage to the parts.
3, as the medium is oil, this equipment must be prepared oil and maintenance work, in order to avoid blockage or leakage, affect the results.
4, new or long set of hydraulic jack, because there is more air cylinders memory, when started, the piston rod may appear slight kick phenomenon can be hydraulic jack load reciprocating motion2-3 times to remove the air chamber. Long-term idle jack, do not work long-term because the seals caused by hardening of the seal, thus affecting the service life of hydraulic jack, so the hydraulic jack when not in use, the monthly want to hydraulic jack load reciprocating motion 2-3 times .
5, (1050Kgf / cm2) when the test pressure tubing passes 105Mpa factory. However, due to aging hose easily, so users need to frequently check, usually for six months, frequently used by three months. A check 87.5Mpa (875Kgf / cm2) pressure test, if blasting, projections, and so the leakage can not be used.
6, jack spring return line structure, after lifting, can be quickly removed, but not to pull the hose connection jack.
7, due to smaller travel lifting jack, do not exceed the rated travel time users, to avoid damage to the jack.
8, should be avoided during the use of the jack severe vibration. There are not suitable acid, corrosive gases in the workplace.
9, the operation should strictly comply with the technical specifications, the user according to the periodic inspection and maintenance usage.
2. The proper use of
1, jacking up the vehicle, must not start the engine, since the rotational vibration of the wheel or the engine, will cause the vehicle to slip off the jack dangerous.
2, car to ensure safety, the use of generally have a fixed position the jack, the jack can not be supported by a bumper, and other parts in the beam.
3-dimensionalRepair personnel do not work without the support vehicle car, when the car is not someone to replace the wheel, because their movements may cause the vehicle to slip off the jack.
4, if no jack when changing tires, according to the different positions of removable tire, take different emergency measures.
5, when the removable outside of the tire wheel, the vehicle wheel can stop at appropriate height on the pad with a wood or stone, the outer tire replacement vacant. Pay attention to tighten the hand brake and front wheel well plug.
6, when the inner removable front tires or tires, stones or bricks with the front axle and the rear axle of the car mat stability, digging below the tire to be demolished, the tire floating replaceable.
7, the support bars should be inserted into the groove of the jack arms in the fixed support point remains fixed.
8, should be used under the car jack the support into the designated position, or easy to damage the vehicle or even cause injuries.
9, rotates rocker arm support from automobiles, support bars support arm can never slip out of the support points.
10, the rocker arm is rotated until the jack on the ground until the foot prop in this case should ensure a large area of the top of the foot and the ground stays must be hard, if that should be soft ground pad prior strong larger area flat plate or a hard object.
11, the jack should be run to recover the balance to pay attention to safety.