m_ridzon

I have an extra OEM 2.0 injector on the shelf that is no good (I think Bosch makes them). Does anyone know how to take these apart? Just for kicks, I'd like to peek inside to see it. I have no other particular reason for asking, other than I'm a curious sort of guy.

donbrew

I didn't see a nondestructive way to do it, everything seems to be crimped. When you see "rebuilt" they mean cleaned and tested.

Oldblue

The direct injectors aren’t designed to be disassembled

geg

1 - injector body;
2 - nut;
3 - high pressure channel;
4 - processing channel;
5 - an adjusting washer;
6 - spring;
7 - "fungus";
8 - spacer;
9 - sprayer;
10 - spray needle;
11 - "step" of the needle;
12 - spray nozzle.

Principle of operation
The diagram shows that the fuel in the mechanical injector goes directly to the atomizer needle. Until the moment of injection, it is held practically without losses (leaks) due to the tight fit of the needle in the area of ​​the shut-off cone. Fuel is supplied by fuel equipment at a given pressure. And when the fuel pressure exceeds the resistance of the spring, the needle rises. Raising the needle opens the spray nozzles and injects. After fuel injection, the pressure on the needle weakens, and the spring returns it to its original place. The needle, reaching the lowest point, closes the nozzles and stops fuel injection into the combustion chamber.

m_ridzon

Thanks for the diagram. I had hoped to disassemble my injector to see why it failed. The SS injectors do not appear to come apart in a non-destructive way though. So I guess I can't go forward with my little investigation. Oh well. No big deal.

PulpFriction

I’d have it apart with a high-speed cutoff wheel by now. Or maybe a Dremel if I was feeling patient.

RJ_RS_SS_350

There seems to be some kind of snap ring on it, you might remove it and see if it disassembles any further..