Inspection and maintenance of injectors of diesel engines Toyota

Test Set injection pressure nozzle on test bench for verification. Several times quickly shake lever fuel injection, creating a pressure sprayer to clean the hole. Slowly swing the lever on the gauge and determine the pressure at which the needle begins to rise. This must be placed within: used jet - 135-155 bar, the new jet - 145-155 bar. If the pressure is not consistent with those values, adjust it by adjusting the thickness of shims required (change in thickness shims to 0,025 mm leads to a change in injection pressure at 3.5 bar). You should use only one adjusting washer. Check for tightness of the needle jet. Create a test bench for injectors pressure of 10-20 bar up to the opening of the injector. In this case, should not be observed leakage of fuel from the nozzle hole or around the compression nuts nozzle for 10 seconds (if there is leakage of fuel, replace or repair the nozzle). Disassembly, cleaning and inspection of the injectors. With the help of a special device, unscrew the locking nut of the nozzle (at dismantling the nozzle does not allow the loss of her internal parts). Remove the spring, shims, the bottom plate of the spring spacer. Cleaning nozzle parts with wooden sticks, brass (or copper), brushes, wash and rinse the body spray in diesel fuel (do not touch the working surface details.) Using a wooden rod, clean the deposits from the tip of the needle gun. Check for corrosion centers on the support surface and the nozzle at the tip of the needle gun. In case of detection of corrosion, replace the housing and needle spray. Check needle spray Rinse the body and needle spray to clean diesel fuel. Tilt the body spray at 60 ° to the horizon (do not touch the surface of hands, precision). Pull the needle gun from the case by one-third of its length, and release it. Under its own weight nozzle needle should slowly sink into the hole of the dispenser. If the nozzle needle can not be immersed easily, replace the housing and needle spray. Building and installing spray nozzles. Replace the spray only recommended by the manufacturer. Tighten the nut on the gun mount (37 N / m). Be careful not to put more time, as this can damage the gun and its failure. In the cylinder head, clean each nest under the nozzle. Put on a new sealing washer in each socket head. Set the nozzle after placing new washers (O), and tighten them with a moment of 64 N / m. Mounting the pipe, tighten the nut with the moment, does not exceed 29 N / m. Connect the hose to the outflow of the fuel tank with the pipeline. Starting with the near-to block the tube, all of the fuel tube of high pressure. Without the need to not deform the fuel lines. Tighten the nuts fuel pipes (time - 29 N / m).