Maintenance for crawler-type concrete mixers covers the following aspects:
1. Water can damage the fuel pump; for substances containing water, use a vacuum bag compatible with the fuel pump system.
2. If substances contain petroleum ether, dry the material in the oven to remove the petroleum ether before using the vacuum bag.
3. Operate the fuel pump system in the correct sequence to prevent backflow.
4. Clean the unit thoroughly after using the vacuum oven, including wiping down the door and windows.
5. Clean off any anti-rust oil from the exterior of the fuel pump components.
6. Remove anti-rust oil from the interior of the fuel pump and fill it with lubricant that meets standard specifications.
7. Flush anti-rust oil from the hydraulic lines and the fuel pump's main shaft assembly until clean oil flows through.
8. Select appropriate fuel.
9. Use engine oil of the correct specifications.
