It should be noted that there is a buffer device in the working hydraulic cylinder, which can gradually release the back pressure near the stroke end;When the piston hits the end of the stroke, it will directly hit the head or bottom of the cylinder, which is easy to cause accidents, so when you reach the end of the stroke, try to leave a gap.The use of rotary action bulldozer will cause the bucket and the working device stress abnormal, resulting in deformation or weld cracks, even pin fracture.This should be avoided whenever possible.Using the weight of the fuselage to excavate, it will cause the abnormal state of slewing support stress, and produce strong vibration and impact to the chassis.When loading or unloading heavy materials such as rocks, they should be unloaded near the bottom of the truck compartment or loaded with soil before loading with rocks.High altitude unloading is prohibited to reduce impact damage to trucks.When the track is deep in mud, a board is put under the bucket to support the track, and then a board is put under the track to push the machine out.