isuzu xcmg 5ton truck mounted crane

Daily Maintenance of Truck-Mounted Cranes

1. Check the chassis power take-off for proper operation, the drive shaft mounting bolts for looseness, balanced operation, and the hydraulic pump for unusual noises and oil leakage.

2. Structural components form the backbone of the truck-mounted crane. Cleaning and maintaining their surfaces to maintain a beautiful and strong appearance is a crucial inspection item. While cleaning, inspect the components for deformation, wear, or cracked welds. Report any problems promptly to minimize the risk of accidents. Structural components are connected by several key pivot points. Lubrication is crucial for smooth operation and prevents jamming, making it crucial for subsequent disassembly and assembly of the pivot points.

3. The telescopic boom is extended and retracted by a cylinder or several sets of cables driven by the cylinder. Check the cables for looseness and lack of tension, indicating the need for pre-tensioning.

4. Inspect and maintain the slewing machine, slewing reducer, and slewing bearing. Also, inspect and remove debris between the teeth of the slewing bearing and slewing reducer, and apply lubricant for routine maintenance.

5. The hoisting reducer is the primary component used by cranes to lift heavy objects. Inspect the motor balance valve and control oil pipe connections for looseness and oil leakage. Observe the reducer's exterior for oil stains to determine if the seals inside the housing have failed. The hoisting wire rope should also be inspected daily. If the outer wires of the wire rope are worn to 40% of their diameter, or if the rope diameter has decreased by 7% or more relative to the nominal diameter, the rope should be discarded. Any broken wires or strands should also be discarded.

6. Hydraulic oil should be inspected daily. Like the blood in our veins, hydraulic oil is the lifeblood of construction machinery. Its abundance and cleanliness directly impact the reliability of the entire machine's operation and are crucial for ensuring it operates according to instructions. Causes and hazards of hydraulic oil deterioration include: whitening and emulsification, and weakened hydraulic cylinders.

7. Hydraulic cylinders are crucial components that enable interconnected structural components to achieve a certain range of motion. Inspect the cylinder piston rod for oil stains and flaws; the valve lock mounting surface, pipe connections, and guide sleeve for oil stains. If the cylinder stops mid-movement, whether it automatically retracts or extends. This can help determine whether the cylinder is functioning properly. Grease the exposed areas of the cylinder rod for protection.

8. Pay attention to the load during the run-in period for the truck crane. The load should generally not exceed 80% of the rated load. Ensure that the truck crane is properly loaded to prevent overheating from prolonged continuous operation.

9. Regularly monitor instrument indicators. If any abnormality is detected, immediately cease operation and rectify the problem. Operations should be discontinued until the cause of the problem is identified and corrected.

10. After the truck crane's run-in period is complete, mandatory maintenance should be performed on the entire vehicle. This includes inspection and adjustment of the truck crane, as well as oil changes.