1. Before excavating the loader, the bucket mouth and supporting legs of the loading bucket should be fixed with the ground, so that the front and rear wheels are slightly off the ground, and the level of the fuselage should be maintained to improve the stability of the machine. Before excavation, the loading hopper should be turned over so that the hopper mouth is facing the ground, and the front wheel is slightly off the ground. The brake pedal should be stepped down and locked, and then the supporting leg should be extended so that the rear wheel is off the ground and in a horizontal position.
2. If the boom suddenly brakes during the descent, the impact force caused by its inertia will damage the excavating device, and can destroy the stability of the machinery and cause an overturning accident. During operation, the control handle should be stable and should not move rapidly; The boom shall not brake midway when descending. Do not use high gear when digging. The rotation shall be smooth and shall not strike and be used to smash down the sides of the groove. The buffer block at the back end of the boom should be kept in good condition; In case of damage, repair it before use. When shifting, the excavating device should be in the middle transport state, retracting the supporting leg and lifting the lifting arm before it can be carried out.
3. Before loading, the rotary mechanism of the excavator should be placed in the middle position and fixed with a pull plate. Low gear should be used during loading. The bucket lifting arm should not use the floating position of the valve when lifting. The distribution valve of the hydraulic control system is divided into the first four valves and the last four valves. The first four valves operate the leg, lifting arm and loading bucket, etc., for the leg expansion and loading operations. The rear four valves operate the bucket, swivel, boom, and handle for swivel and excavation operations. The mechanical dynamics and hydraulic system capabilities do not permit, or make it possible, simultaneous loading and excavation operations.