Instructions for drivers:
Safety inspection shall be conducted before semitrailer operation, and driving with fault is prohibited

●Tire pressure
●Fasten condition of main bolts and nuts of wheel and suspension system
●Whether the leaf spring or main beam of suspension system is broken
●Working condition of lighting and braking system

●Air pressure condition of brake system and air suspension system

Every two weeks or frosty days

●Open the drain valve at the bottom of the air reservoir to drain the accumulated water

New vehicle

●After the first two weeks of driving or after the first loading, it is necessary to check the tightening condition of all bolts and nuts of the wheel and suspension system, and ensure that the specified torque is reached.

Maintenance

●After removing the wheel each time, it is necessary to check the fasten condition of the wheel nut and ensure that the specified torque is reached