Fuel Injection Nozzle Test (DE-02.07)

Fuel Injection Nozzle Test (DE-02.07)

Test Values:

Tightening Torques:

Special Tools:

Special Tools (cont):

Warning:
Use only clean testing oil or filtered diesel fuel for testing. When testing a nozzle, never move hand into jet of nozzle. Fuel jet will deeply penetrate the flesh and will destroy the tissue. Fuel entering into blood may cause blood poisoning.

Caution:
The shutoff valve for the pressure gauge should remain closed during spray pattern and buzzing tests. Otherwise, the pressure gauge may be damaged due to excessive and rapid pressure fluctuations.




The fuel injection nozzle with Bosch designation DN 0 SD 240 is a CHIP (Center Hole in Pintle) nozzle. This nozzle has a cross hole (14) and a center hole (15) in the tip of the pintle nozzle. In addition, a maintenance free filter insert (13) is pressed into the fuel inlet of the upper injection nozzle holder part.

Note:
Verity the complaint with the customer If slight or occasional knock has been reported or knocking occurs during cold start only, experience has shown that the use of a different brand of diesel fuel will often cure the problem. Please keep in mind that knocking of a cold diesel engine is not a sign of malfunction and not harmful to the engine. Perform all verification tests with the engine at operating temperature.

If the knocking problem still persists after operating on one or more tanks of different fuel, the nozzle assemblies must be removed.

Perform all the following tests consecutively and note test results before cleaning or replacing injection nozzles or parts.

Test:

Test (cont):