Advanced trade route cost analysis

The reasons for the dripping of the exhaust pipe of the diesel engine are as follows: the cylinder block and cylinder liner are cracked, and the cooling water leaks into the cylinder. The cylinder liner is worn or broken, and the cooling water leaks into the oil sap.

List of the catalog of this article:

• 1,Advanced trade route cost analysisHow to match the wd615 gear chamber of Weichai engine
• 2, Weichai wd615 engine idle speed why no oil pressure
• 3, How to adjust the WD615 engine valve
• 4、 What are the water droplets in the exhaust pipe of the WD615 Weichai engine?

How to match the wd615 gear chamber of Weichai engine

When installing the camshaft timing gear, it should be in the stop position on the first cylinder, and the timing notation on the flywheel and the flywheel shell is right , and align the engraving line on the timing gear with the engraving line on the gear chamber to hold the gear a little harder, and rotate the camshaft with a screwdriver to insert the positioning pin on the camshaft into the gear positioning pin hole.

, rotate the crankshaft, observe the observation hole on the transmission housing, and align the scale on the flywheel with the fingering on the housing. At this time, the engine cylinder piston is placed in the timing position. Rotate the camshaft, as shown in the figure below, so that the marking of the timing gear on the camshaft is flush with the bottom of the valve chamber cover.

Specific adjustment: (take WD615 as an example): rotate the crankshaft to the "upper stop point" of a cylinder.

The timing gear is marked. Put the mark on the flywheel on it, and the clock is on the cylinder.

There is no time mark in Weichai. The gear of the air pump can be installed directly. Then turn on the timing of the ignition. There is a mark on the oil pump. At the front end of the oil pump. The mark on a thin steel sheet and the mark on the connecting shaft. You will find it if you carefully check the oil pump and turn it around.

Generally, timing marks are marked on the timing gear, front end of the crankshaft and flywheel of the engine. The meaning of the mark is the position of the stop point on the piston of the first cylinder of the engine. With this position, we can easily proofread the timing.

Why does Weichai wd615 engine idle without oil pressure

The first step is to check the oil pressure gauge and pressure sensor. The easiest way is to find the same one and replace it. If the fault continues, then proceed to the next step.

Confirm whether the oil pressure switch is normal. If it is normal, it means that the oil pressure is insufficient. Different diesel engines have different oil pressures, which can be found in the manual.I roughly remember that the oil pressure is generally 300-400Kpa. According to your description above, it is very likely that the pressure is insufficient due to the wear of the oil pump.

There are two possibilities, 1 the idle speed is too low, resulting in too low idling pressure. ( Adjust the speed of idle speed) 2 You can adjust the pressure through the pressure regulating valve on the base of the oil core sensor, and it can be solved.

How to adjust the WD615 engine valve

1. There are two ways to adjust the valve order: the first method is according to the engine ignition order (1-5-3-6-2-4) Move the crankshaft, so that the cylinder is in the upper stop position of the working stroke. At this time, the intake and exhaust valves are completely closed, and the valve gap is adjusted. After all the adjustments, the crankshaft needs to be rotated 720 degrees.

2. The first type: cylinder-by-cylinder adjustment method. Use the stacking angle method to judge that the piston is at the upper stop point. Four-cylinder engine (adjust the first cylinder depends on the stacking angle of the fourth cylinder, and then adjust the third cylinder to look at the stacking angle of the second cylinder. Then adjust the fourth cylinder according to the stacking angle of the first cylinder, and finally adjust the second cylinder according to the stacking angle of the third cylinder.

3. The diesel engine should be larger: intake 35~40 wire; exhaust: 45~50 wire.

What are the water droplets in the exhaust pipe of the WD615 Weichai engine?

1. Water has entered the oil pan; 2 The cylinder has been pulled; 3 The plug is broken; 4 The cylinder head is cracked.

2. Because the hot exhaust gas discharged by the engine is caused by air condensation, which is a normal phenomenon. The exhaust pipe at the rear of the vehicle is a main silencer, whose main function is to eliminate the noise of engine exhaust and reduce the pollution of vehicle noise to the environment. Because the main silencer is located at the rear of the car, the temperature is relatively low, and the inside is a multi-cheamber structure, which is easy to form stagnant water.

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