1. Check whether each component is normal, whether there is loosening, cracks, oil leakage, severe wear and other phenomena.

2. Do not disassemble the gourd in hand. If you need to replace parts or normal maintenance, you must be carried out under the responsibility or guidance of the professionals. Inspection

The latter -handed gourd should be carried out normally before the air load and heavy load test can be used before they can be put into use.

3. Hand -stracting gourds must pay attention to maintenance and maintenance. In transportation, transfer use places and use process, knocking and collision are strictly prohibited. Use

Bi Ying wiped the dirt on the hand to storage in a dry place to prevent moisture, rust and corrosion.