Two easy ways to check the assembly quality of a single fuel injection pump

1, from the car inspection method
First find a clean block of wood, hands to wash clean, the pump drive roller below (ie, upright), finger clean with some clean diesel, dripping oil into the screw hole, the pinch (A pump) or lugs I pump) is purposely fixed in the stop position, the maximum supply position, with both hands hold the pump, push down the force, rebound rise and then depressed, so repeated several times, at the same time pay attention to observe the valve Tight seat of the oil situation:

1.1 in the stop position, push down, the valve seat should not be out of oil:

1.2 In the maximum fuel supply position, push down, the valve seat should be the most fuel injection.

If you can meet the above requirements, then the assembly is complete. Otherwise it should be reassembled until it meets the requirements.

2, the car inspection method
The assembled fuel injection pump (together with the adjustment pad for adjusting the advance angle of fuel supply) is installed on the side of the gear chamber cover (to ensure that the dial or lugs are inserted into the oil dial), the connecting screw is fixed, Connected to the tubing and deflated, the purposefully fixed throttle in different positions (ie stop the oil level and the maximum fuel level), open the decompression, while the side of the car while watching the following three cases of any one of the oil situation :

2.1 do not take the high-pressure tubing, the other person directly observed the oil valve seat of the oil situation.

2.2 connected to the high-pressure tubing, not connected to the injector, and the high-pressure tubing outlet up, observe the oil outlet situation.

2.3 connected to the high-pressure tubing, and connected to the injector, injector fuel injection directly observed.

As long as the throttle is in the stop position, none of the above three oil, and the throttle at the maximum fuel supply position, the maximum output, it shows that the fuel injection pump assembly intact, otherwise it should be reassembled open until meet the requirements.

In practical work, we must make flexible use of the above two kinds of inspection methods.

The first method to prioritize, used to check the newly assembled monomer pump, if the assembly does not meet the requirements, can be disassembled to check and correct, but this method is completely hand operated, more laborious: The second approach is very close The actual work of the diesel engine, after passing the first method of inspection, for those who are not skilled, and then check the confirmation of this method, the heart is even more count, and can avoid the single pump due to the pin or lug Set into the oil dial inserted in the start after the "speed" phenomenon.

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Shangqiu Sihai Energy Technology Co., Ltd , https://www.sihaienergy.com