Jaw crusher is the coarse crushing machine for the stone and aggregates. Its inspection and maintenance including the following items:

1. Inspect the baring temperature. The temperature should not exceed 60℃ (the temperature of rolling bearing cannot exceed 70℃).

2. Check whether the lubrication system works properly, observe the oil pressure, check the oil box and oil amount.

3. Check whether there are metal smalls inside the return oil. If it has, should stop the machine and check the lubrication parts.

4. Check whether the connecting parts like bolts and fly wheel key are loose, check the abrasion situation of liner plate and drive parts.

5. Clean the oil filter regularly, and airing.