Analysis of common failure causes and solutions of steering gear

First of all, before we analyze the cause of the failure, there are a few points to note:

1, can not blindly disassemble the machine, should first find out whether the fault is external or internal steering gear, so as not to waste time and expand the fault

2, the components of the steering engine can not be blindly disassembled, disassembly can not be too hard, so as not to damage the original and cause new faults

3, can not be arbitrarily adjusted, adjusted should be recorded, adjustment has no effect on the fault should be put back in place

4, when disassembly to make a good record, can not lose and confuse various parts, wrong components and wire installation position and direction

5. Avoid short circuit caused by solder or residue; When operating on line, protection and insulation should be done to avoid short circuit

Analytical method

It is possible to find the fault point directly through observation, and some faults can be directly eliminated, such as welding and assembly faults. However, it should be pointed out that many faults are only surface phenomena, and there may be deeper causes hidden below the surface phenomenon. It is necessary to test the corresponding circuit parameters of the corresponding circuit according to the fault phenomenon, and analyze the test results (phenomenon) combined with the circuit principle in order to find out the root cause of the fault and the real fault point.

Common troubleshooting methods for steering gear:

1, observation method: Observation method is a way to find the line fault through the human body. It can be divided into static observation method and dynamic observation method.

2, measurement method: The measurement method is the use of measuring equipment to test the relevant electrical parameters of the circuit, and compared with the parameters provided by the product technical document. Measurement method is the most widely used and effective method in fault finding. According to the characteristics of the measured electrical parameters, it can be divided into voltage method, current method, resistance method and waveform method.

3, replacement method: The replacement method is the use of good performance of the steering gear devices, components (or the use of the same type of normal steering gear of the same devices, components) to replace the part of the product that may cause failure, in order to determine the fault location of a method.

4, comparison method: The use of the same type of steering gear, compared with the maintenance of the steering gear, to find out the fault part, this method is called comparison method. During maintenance, the corresponding points of the two can be compared, and the problem can be found and the fault can be found.

5, heating/cooling method: The heating method is to use a soldering iron to heat the suspected components, so that the failure occurs in advance, to determine the cause and location of the fault. It is especially suitable for the maintenance of the whole machine that has just started working normally and needs to work for a period of time before failure.

In contrast to the heating method, the cooling method is to cool the suspected components with volatile liquids such as alcohol, so that the fault disappears, and the cause and location of the fault are determined.

Here are some common steering gear failures and possible causes