Take off the shell, just unscrew the above four splint screws, if the screw above the sand mud, first coated with waste oil, you can easily point, really can not consider the wind gun, for the wind gu···

The surface of the main seal kit is hardened and the sliding surface is cracked. Cause ----- Abnormally high working pressure.The surface of the main oil seal is hardened, the seal kit of the whole se···