Preface:
The broken hammer of the excavator is broken, the screw is broken, the head screw is broken and the maintenance price is not cheap.
The replacement procedures for replacing the artillery head screw are as follows:
1 to the site first check is that the screw was broken. It is best to find a joint tool. If it is too tight, you can first stick the oil on the nut and then use the water pipe to make it easy.
2 first unscrew the oil pipe, seal the mouth with toilet paper, turn the nut off, remove the splint screws and remove the splint.
3 collect materials locally, clean the surface with diesel oil on the excavator, clean the surface debris with the brush, and wipe them carefully. Try to clean it up as much as possible.
4 after cleaning the appearance, find the air blowhole, release nitrogen, do not let go, it is easy to hurt people, remember!
5 when the gas is put, take out the long screw.
After all the 6 screws are removed, they start to decompose the body.
7 has been decomposed, because the main parts of the cylinder piston have no damage, also do not have to break down, find the position of the broken screw, clean the fracture site of diesel oil, in order to prevent the clutter card at the screw, can not break the screw inside.
8 clean up the cross section of the sundries, found the screw loose signs, do not use electric welding, it is happy, with a hammer tapping screwdriver, slowly spin out, after a few minutes, easy to take out.
9 after taking out the section, it is necessary to carry out the assembly, of course, there is also a place of rust, with 500 water sand paper, and the oil is worn on it to make the surface smooth, and it will not damage the O-ring when it is assembled.
10 after all grinding and smooth, the assembly began, and the nitrogen room and the front cylinder should be coated with butter or oil, which could be easily assembled, and the sequelae were not.
11 when assembled, screw up and tighten the splint screws.
