Diesel Injector Fuel Injector 0445120381 compatible with Bosch injector Yuchai Machinery

1. The adjusted injector is installed on the high pressure tubing connected with the injection pump, the accelerator is placed in the maximum position, the vacuum rocker is decompressed, and the speed is controlled by pumping oil 40 ~ 50 times per minute.

2, the screwdriver will be the fuel injector adjusting bolt loose, adjusted to the spring is not under pressure, rocker a few turns, when the fuel injector has an oil flow out, and then gradually screw into the adjusting bolt, the side of the rocker observe the fuel injection situation, when there is a "pupu" oil spray sound, the spray of oil began to atomize, At this time, the injection pressure is about 5.88 to 7.84 mpa (60 to 80 engineering atmospheres).

3, and then the adjustment bolt into a circle, equivalent to the start of the injection pressure increase 3.92 mpa (40 engineering atmospheric pressure), when you hear the "chi, chi" crisp oil sound, spray very fine oil mist, and continuous injection 20 to 30 times without dripping oil phenomenon, the oil injection pressure of the injector is about 1 1.77 MPA (120 212 atmospheric pressure).

4. Mark the position of the adjusting bolt, screw it into 1/2 turn and then pull the car. If the spraying situation does not change, it can be considered that the injection pressure adjustment under the marked position has been generally normal. If there is a three-way pipe and has been calibrated good fuel injector, can also be used three-way pipe will be checked and has been calibrated good fuel injector in parallel on the fuel injection pump, eliminate the air in the oil path, put the throttle in the maximum oil supply position, reduce the pressure rocking crankshaft, observe the two fuel injector injection situation, if at the same time, that the pressure is normal; If the checked fuel injector is injected in advance, it indicates that the injection pressure is insufficient and should be adjusted. Loosen the locking nut of the adjusting bolt and turn the adjusting bolt inward to increase the preloading force of the regulating spring and increase the oil injection pressure until the two fuel injectors spray oil at the same time. Finally, lock the nut.