Second, the maintenance of the lubrication system.
1. Lubricate the drive gear and gear plate.
2. Lubricate the connection pin between the boom bearing and the turntable.
3. Lubricate the boom bearing and the connecting pin of the boom.
4. Lubricate the connecting pin of the forearm cylinder and the boom.
5. Lubricate the connecting pin of the big curved connecting rod and the boom.
6. Lubricate the connecting pin of the forearm oil cylinder and the large curved connecting rod.
7. Lubricate the connecting pin of the large curved connecting rod and the direct rod.
Three, electrical system maintenance.
1. Check the circuit, remove the singe or replace the contacts.
2. Check and adjust whether the electrical components are safe and reliable, and replace the damaged fuse.
3. Whether the motor protective cover is in good condition.