In the construction industry, concrete pump trucks are essential pieces of equipment, and the power take-off (PTO) box plays a crucial role in providing power. Since the PTO box is always in operation whether the truck is moving or working, proper maintenance of the PTO box is of utmost importance. Today, let's dive into how to properly maintain the PTO box of a concrete pump truck to ensure efficient operation.

**Lubricant Check: Ensuring Adequate Lubrication**

Before starting the concrete pump truck, it is essential to check the lubricant level in the PTO box. The correct procedure is to press the oil level button and hold it for 3 seconds; lubricant should overflow from the button. If the lubricant level is insufficient, you need to add lubricant through the PTO box's oil filler port. It is important to note that the choice of lubricant should be based on the local temperature to ensure it functions properly under different conditions.

**Lubricant Replacement Frequency: Regular Updates for Reliable Operation**

The lubricant in the PTO box is a key factor in ensuring its normal operation. Generally, the lubricant should be replaced every 250-300 working hours (for new equipment, if not frequently used, it is recommended to replace it every six months). At the same time, the PTO box should be thoroughly cleaned during lubricant replacement to remove dirt and harmful impurities, ensuring reliable operation. Regular lubricant replacement can effectively reduce equipment failures and extend the service life of the equipment.

**Bolt Inspection Frequency: Weekly Checks to Prevent Issues**

The bolts connecting the PTO box and the mounting bolts should be inspected weekly. This is because bolts may loosen due to vibrations during equipment operation, which can lead to greater vibrations and even PTO box damage. Regularly checking the tightness of the bolts can effectively prevent equipment failures caused by loose bolts and ensure safe operation.

**Lubricant Level Requirements: Strict Control to Avoid Overfilling**

The lubricant level in the PTO box must be strictly controlled. Generally, the lubricant level should not exceed the upper oil level bolt. If the lubricant level is too high, the PTO box is prone to overheating during operation, leading to lubricant degradation and affecting the lubrication of the gears and bearings inside the PTO box. In severe cases, lubrication failure can cause bearing and gear surface damage, resulting in equipment downtime and unnecessary economic losses.

Maintaining the PTO box of a concrete pump truck may seem simple, but every detail is crucial for the normal operation and service life of the equipment. By following the four maintenance measures mentioned above, we can effectively reduce equipment failures and improve work efficiency. We hope that every equipment operator and maintenance personnel will pay attention to PTO box maintenance to keep the equipment in optimal condition.