Crawlers are widely used in construction machinery and equipment, and are part of the walking device of crawler excavators. Since excavators are generally constructed in relatively harsh environments, it is inevitable that faults such as looseness, damage, and breakage of the crawlers will be caused. What are the reasons for the damage to the unilateral crawlers of the excavator?
Failure performance:
A Hitachi ZX360K-5A excavator walked normally on the job site this morning, but continued to work in the afternoon and found that the excavator's unilateral abdominal belt could not walk.
Hitachi ZX360K-5A excavator unilateral crawler can not walk failure reasons:
1 The main pump supplying the unilateral crawler is damaged.
2 The track is broken.
3 The travel pilot valve is damaged, and the travel servo pressure is too low, resulting in the failure of the excavator's unilateral crawler to travel.
4 The main valve stem is stuck and the spring is broken.
5 The travel motor is damaged.
6 The traveling speed reducer is damaged, which causes the excavator's unilateral crawler to fail to travel.
7 Communicate with the upper and lower cavity of the adapter.
8 The burst of the walking tubing will also cause the failure of the excavator's unilateral crawler to walk.
Hitachi ZX360K-5A excavator unilateral crawler can not walk failure repair method:
1 Replace the main pump of excavator.
2 Connect the webbing rail.
3 Repair or replace the main valve stem and spring.
4 Replace the travel pilot valve and adjust the servo pressure.
5 Replace the excavator travel motor.
6 Replace the excavator travel reducer.
7 Change oil seal or assembly cleaning.
8 Replace the excavator walking tubing.
