2. INSPECTION AND ADJUSTMENT Spray and injection states Operate the nozzle tester lever at a rate of once or twice a second and check no abnormal injection. If normal injection as shown below can- not be obtained, replace the fuel injec- tion valve. No extreme difference in angle ( ) No extreme injection angle difference ( ) Finely atomized spray Excellent spray departure (c) Nozzle valve sliding test Wash the nozzle valve in clean fuel oil. Place the nozzle body vertically and insert the nozzle into the body to about 1/3 of its length. The valve is normal if it smoothly falls by its own weight into the body.
In case of a new nozzle, remove the seal peel, and immerse it in clean diesel oil or the like to clean the inner and outer surfaces and to thoroughly remove rust-preventive oil before using the nozzle. Note that a new nozzle is coated with rust-preventive oil and is pasted with the seal peel to shut off outer air. (d) Nozzle punch mark 82E-5 – 98E-5 SERIES 2-25