How to repair the Shaolin car air pump door, how to repair the car air pump joint is broken

Failure causes and maintenance methods for the reduction of automobile air pump exhaust volume:

Fault: Reduced exhaust volume of automobile air pump:

1. Cause of failure: lack of oil.

The reduction in exhaust volume is directly related to the lack of oil. Once we were in production, the air compressor had a failure to reduce the exhaust volume, not only could not make the press roller of the printing machine lift, but also accompanied by a certain knocking sound.

Maintenance method: We first checked the air muffler, and cleaned it, then observed the oil level, found that the oil level was lower than the 1 3 oil mark, immediately filled with the same grade of oil, and then started the power switch, try to open, or there is a knocking sound. Later, the crankshaft, connecting rod, piston, and cylinder of the moving mechanism parts were disassembled one by one for inspection, and it was found that the crankshaft was cracked, and it could be seen that it was about to break, and it must have been short of oil for a while.

Due to the lack of oil, dry friction occurs in the moving parts, and the overload operation causes the parts to be damaged to varying degrees. We cleaned and grinded the damaged moving parts, seriously replaced, and then reinstalled and tested the machine, the knocking sound disappeared, and the exhaust volume was normal. It can be seen that engine oil is absolutely indispensable, otherwise there will be endless troubles.

2. Cause of failure: The tightness of the air silencer filter and air valve is not goodMaintenance method: the reduction of exhaust volume is also related to the tightness of the air silencer filter and air valve.

Air noise filters must be cleaned frequently. Cleaning the dirt on the valve plate and valve plate is conducive to ensuring the normal exhaust volume of the automobile air compressor. Filters should be cleaned every 200 hours and valves should be cleaned every 500 800 hours.

3. Cause of failure: poor quality of lubricating oil.

Maintenance method: Poor lubricating oil quality will cause the piston ring to be sucked, thereby reducing the exhaust volume. Therefore, high-quality lubricants should be chosen.

After long-term operation, the lubricating oil will contain impurities, dust, etc., so it must be filtered. In general, the oil should be changed every 500 800 hours and the oil used before it should be filtered.

4. Cause of failure: the exhaust temperature is too high.

Maintenance method: Extremely high exhaust temperature will also cause the piston ring to be sucked, resulting in a decrease in exhaust volume. Just lower the temperature and you can solve the problem.

There are two points to pay attention to here: (1) The ambient temperature should not be too high, generally not more than 40. (2) If the valve leaks, the discharged high-temperature gas will return to the cylinder.

At this time, we should carefully check the valve, grind the valve plate or replace the valve plate to rule out the air leakage, so that it is possible to solve the problem of ultra-high temperature.

The Shaolin school bus ran out of gas overnight, causing the door to not open.

It's okay to change the connector [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

It's the same as the cigarette lighter plug, just change the connector [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

In this case, it is not possible to install the metal shell again, the thread has been slippery, and under normal circumstances, you can only buy a new set and reinstall it. Loosen the old expansion wire nut, smash it in with a hammer, and increase the strength until the expansion wire and the wall hole are loosened, take out the old expansion wire, install the new one, and fix it, so that the part on the door does not need to be removed.

Replace the screws from the new, can you screw it, if you still can't screw it, you have to buy a new door stopper.

The screws are generally not repaired by hand. Buy a new one and put it on.

It is best to ask professional door and window maintenance personnel to come to reinstall the suction buckle!

Don't repair this thing, buy one for a few dollars, just install it yourself, the root is easy.

1. The shrapnel in the air pump has been softened for a long time, and when the pressure of the air reservoir reaches a certain air pressure, the softened shrapnel cannot bounce up due to the reverse pressure of the gas storage cylinder. In other words, this problem can hit up to 4-6 kilograms.

2. It is the pipe of the pump that is blocked, if the pipe is blocked, it is very good to check, that is, to disassemble the pump pipe from the dryer, and start the pump if there is black smoke out of the pipeline, it is the pump pipeline is blocked, and the solution is to replace the pump pipeline.

3. One of the four circuits has air leakage, and the four-circuit protection valve is automatically closed, which is easy to identify, that is, to see if there is a needle in the pressure gauge that can hit 6 pressures, and the other needle has no pressure at all.

4. The built-in spring of the four-circuit protection valve is stuck due to too long time.

Electric pump blood pressure you have to go to a regular repair shop for maintenance, you must not repair it yourself, there are safety problems.

If the electric pump is broken, just send it to the repair shop for repair.

Electric pump pressure relief, you have to see whether the seal of each valve block is intact, whether the valve core is not tightly closed?

I'll go, this depends on where the air leak is. This is because the air pump works under pressure in a closed system. If the leakage point is in the connection parts such as valves and interfaces, consider replacing small parts such as gaskets and valves for sealing; If there is a leak point on the overall components such as the gas tank, it is generally necessary to replace the gas tank as a whole, and it is very difficult to fill the leakage point because it is a pressure-bearing equipment.

Consider welding or sealing adhesives, but the process requirements are very high. Hope it helps.

You mean the oil seal on the side of the air pump on the shaft from the air pump to the oil pump? This one needs to remove the oil pump first, and then remove the air pump and replace the oil seal! My Howo has changed several times, and it takes an average of more than a year to change one, which is also related to the intensity of work!

10 years of Howo pump oil seal leakage is the so-called expert design error, the oil seal outside the circlip resulting in a long time of use, the oil seal is moved out and leakage, replacing the oil seal is also very troublesome, disassembling the diesel pump, replacing the new oil seal is not durable, but also easy to cause oil loss and burning tiles, it is recommended to replace the new pump pump.

In the early years, the valve core was made of rubber and metal, and now most of them are self-sealing valve cores, but they can be replaced with a valve wrench, but now almost no one replaces them, and there are few air leaks.

The mouth is usually broken or sand. The English mouth is generally replaced with a rubber strip.

The valve core is generally not broken, and the hose of the British valve core will age and break, resulting in air leakage, which requires the replacement of the hose

You can pull out the valve core to see if the hose of the sleeve is broken (too short, you need to set a new one) Generally speaking, if it is not a hose problem with the valve core, it is likely to be a tire problem, try to fill the air, if it will not leak for a period of time, it is the leakage caused by the valve core sleeve is too short, and the replacement hose will leak: it is very likely that the tire is punctured and causes air leakage.

1) Check the circuit.

Focus on checking the solenoid valve, remove the connecting wire on the solenoid valve, test the fire with the test lamp, if the light is on, it means that there is electricity, if you can still hear the sound of "horn", it means that the solenoid valve is working normally, otherwise it is considered to be faulty.

2) Check each switch.

When checking the control switch, it is mainly to check whether the power supply can be turned on and off in time. The three-speed switch has a total of three gears, and the middle position is the engine.

The third and fourth cylinders play a braking role; In the following position, the first, second, fifth and sixth cylinders play a braking role; In the upper position, all six cylinders act as brakes.

3) Check the oil circuit.

Turn on the circuit, loosen a joint on the oil line, and observe whether there is oil flowing through and the amount of pressure. The inspection can be carried out in three steps: :

Check the check ball valve for faults.

Check that the main piston (injector rocker arm) is working properly.

Check the sub-piston (exhaust valve) for oil flow.

Check the working condition of the main piston and the auxiliary piston, mainly check whether the main piston or auxiliary piston is rusted or stuck. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】