To grasp the entire situation of the failure, the operator must be a comprehensive understanding of the observation of the diesel engine, and make the necessary checks and to make the reasons for the failure to give analysis.

First, understand the phenomenon of failure

First, listen to the failure report and understand the fault phenomenon. Some signs of failure may be blurred, while others may be more special.

Although there are many failures that can be understood very quickly and simply, some maintenance personnel will think of some examples, and the first conclusion that is often made to the failure analysis can not rule out these failures. These circumstances have occurred because of the lack of knowledge of certain important cases or the neglect of these important situations.

For maintenance personnel, you must consult with the owner, especially the actual operator, so that you have a full understanding of the problem of failure. In some cases only the operator knows, and you must understand these situations. There are other cases, but only by observing the running diesel engine, or remove some parts to be found.

You may think of some similar failure is a special way to exclude. However, the same failure, not always have to use the same method to deal with.

Second, the maintenance staff can be from the following questions to understand the form of information needed to diagnose the fault information:

1, the use of diesel engines

Baotou North Ben heavy truck parts before the failure of any abnormal noise? Is the load or light load running? Accelerated or decelerated? Has the oil or water temperature changed?

Was there any abnormal dust or flue gas at that time? What are the climatic conditions?

What about the road grade at the time? What is the first fault? What is the consumption of oil, fuel and coolant? What’s the change?

Is the diesel engine throttle responsive? Is the deceleration normal? Is the shutdown satisfactory? Is the temperature start satisfactory? Have you ever turned off or missed it?

What kind of fuel is used? What is the level of fuel and the source? Will it be idle at full speed or full speed? Can I run for long periods of time?

2, the maintenance history of diesel engines

Has the diesel engine recently been repaired? What kind of maintenance?

Has this happened before? When was the last adjustment? Recently replaced oil and fuel filters?

Is the maintenance system strictly? How does fuel get and store: What are the maintenance categories and the level of lubricants used?

How many kilometers or how many h is the diesel engine running? Who to repair and adjust?

Replacement Baotou North Ben heavy truck accessories oil filter, the test of the whole stream of oil filter filter? Did you find any metal impurities?

3, observe the results

Is the diesel machine clean or dirty? How is the belt tight? Is there any leakage of oil, fuel or water outside? Have overheated?

Have you made any temporary repair on the diesel engine (parts are not tightened, broken parts, etc.).

What is the sound of the diesel engine at idle? Does the pulley have any chatter? Have you ever repaired or replaced any parts?

Are there any non-standard parts of the diesel engine that are not part of the diesel engine? Are there any bad pipes?

Oil oil, surface and fuel oil surface is highly satisfactory (if involved in bearing problems, pay attention to the oil condition. Has occurred such a situation, due to lack of oil to Baotou North Ben heavy truck parts bearing damage, and after the operator Pour the new oil into the crankcase).

In the demolition, the diesel engine with or without smell, coke, sludge? Rocker cover under any other adverse situation?

4, began to repair the former mechanics to consider the problem

Just simply ask and understand the situation, can not solve any problems. Therefore, before the maintenance must understand the failure of the situation, see each issue of interdependence in order to make judgments.

Using all available and existing test instruments is helpful for the thought process (thinking), but it is not always necessary to use it.

The mechanic must be familiar with the diesel model, the equipment model and the operational knowledge. Equipment on diesel engines, such as torque converters, coolers and stepless governors, must be considered.

Most diesel users are disgusted with the loss of unnecessary downtime and premature disassembly, so pay attention to planned and targeted overhaul and make every maintenance complete and successful.

As a result of any problems with the diesel engine, it may affect the operation of the machine, so you must have a wealth of experience in identifying the operation of the diesel engine. Successful troubleshooting is an important condition for the operation of the diesel engine and its parts Of the knowledge, to solve the problem of failure, which is an intellectual training activities.

Find and troubleshooting, the first to carry out certain checks, it is not difficult to check the information obtained must be related to the failure. Can not say that you are in front of a diesel engine out of last week with a diesel engine the same fault phenomenon, that the same reason for the failure. In fact, the phenomenon is the same, and the location and the reason is completely different fault is a lot. For example: diesel engine to take blue smoke, add too much oil and respirator failure can lead to diesel smoke blue smoke, the phenomenon is basically the same, but the two causes and treatment is completely different.