How to quickly replace excavator oil seal
The replacement of the oil seal in the central swivel joint on the excavator and the oil seal in the boom cylinder, such as the traditional method, is time-consuming and laborious, and limited by the site and equipment, it cannot be quickly replaced and repaired in the field. In practice, a set of quick methods for this type of oil seal can be found, which can increase the work efficiency by 15-20 times. 1.Replacement of oil seal of central rotary joint (1) First, unscrew the related fixing screws, and then drag the lower transmission box with a liftable hydraulic trolley, and rotate it to a certain angle, then lower the trolley and pull the lower transmission box to one side. (2) Cut off the oil return pipe with an oil breaker (so as not to draw out a large amount of hydraulic oil along the core of the central rotary joint). Unscrew the 4 fixing screws on the oil distribution pan. (3) Hang the iron hooks on both sides of the tensioner on the two symmetrical tubing joints on both sid