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◆ 1000 km after the exercise of the new car, in the state of full load on the leaf spring U-bolts to tighten (to maintain the factory tightening torque value), so as to avoid riding U-bolt loosening caused by leaf spring misalignment, vehicle deviation or leaf spring center Hole fracture and other accidents.
◆ After a certain mileage of the vehicle (3000 km), it should promptly check and lubricate the leaf spring bushings and pins. If the bores of the ears are seriously worn, replace the new bushings in time so as to avoid noise from the connection parts. , So as to avoid uneven wear due to bushing caused after the leaf spring distortion, the car running in the process of deviation.
◆ After the vehicle travels for a certain mileage, it is necessary to replace the leaf spring on both sides of the steel spring assembly at the same time, so as to avoid incline of the arc spring on both sides of the leaf spring, the vehicle may overturn during the rapid turning.
◆ assembly in the loading state, arc high arc (arc height is negative), not necessarily the leaf spring carrying capacity is not enough. Because the design of the whole car, many leaf spring full load arc high requirements for 0 arc high or negative arc height.
◆ Composite spring or main and auxiliary spring structure, the assembly plus or thickening of the assembly to improve the carrying capacity, but may not be able to achieve the desired results. Because the assembly plus or thickened, changed the loading state, the main and auxiliary spring bearing ratio has changed; In addition, increase or decrease the arc height, in general, is not conducive to the use of leaf spring.
◆ assembly "center hole" at the fracture, not necessarily the quality of leaf spring. Because the leaf spring through the U-bolt clamping the weakest "center hole" at the protection, strength greatly enhanced, in theory, is a rigid whole, the weak link should be "splint" at both ends. Leaf spring from the "splint" to the end of the middle of the end of a fracture is a normal fracture from the "center hole" at the fracture, is generally believed to be U-bolt is not timely due to tightening.
