CAT 320D valve adjustment steps and precautions.
With the wide application of excavators in various projects, the maintenance and maintenance of excavators are becoming more and more important. Among them, valve adjustment is an important work in excavator maintenance. This article will introduce the adjustment steps and precautions of the valve of the Carter 320D excavator in detail.
1. Carter 320D valve adjustment steps.
1.Preparation before adjustment.
Before you can adjust the valves, you need to do some preparation. First of all, make sure that the engine has been completely cooled down and that all components are in good working order. At the same time, it is necessary to check whether the valve clearance is correct to ensure the accuracy of the adjustment.
2.Adjust the order.
The valve adjustment sequence of the Carter 320D excavator is according to the principle of "adjust the intake valve first, then the exhaust valve;first adjust the closer valve, then adjust the farther valve". Specifically, the engine is first turned to the top dead center of the one-cylinder compression, then the intake and exhaust valves of the first cylinder, then the intake and exhaust valves of the second cylinder, the exhaust valves of the third cylinder, and so on.
3.Adjust the method.
When adjusting the valve, it is necessary to use a special valve adjustment tool to adjust the elasticity of the valve spring. In general, the adjustment clearance of the valve is 02-0.About 3 mm, but the specific adjustment gap needs to be determined according to the actual use. During the adjustment process, it is necessary to pay attention to whether the opening and closing of the valve is smooth, and whether there is any abnormal noise or stuttering.
4.Inspection and commissioning.
After adjusting the valves, they need to be checked and adjusted. You can start the engine and observe whether the opening and closing of the valve is normal, and whether there is any abnormal noise or stuckness. If there is a problem, further adjustments are needed.
2. Precautions.
1.Special care needs to be taken when adjusting the valves, not to over-adjust or not to be in place, so as not to affect the normal operation of the engine.
2.The adjustment process needs to keep the tool clean and sharp to avoid damage to the valve or valve seat.
3.After adjustment, the engine needs to be checked and adjusted to ensure that it is operating normally without abnormal noise or vibration.
4.If a valve or valve seat is found to be worn or damaged, it needs to be replaced or repaired in a timely manner.
5.When making valve adjustments, you need to pay attention to safety and do not operate when the engine is hot. At the same time, it is necessary to ensure that the workplace is well ventilated to avoid the harm of harmful gases to the human body.