Marker - part name
Black - shim
Red - compression spring
Green - compression pin
Blue - intermediate disk


Marker - part name
Black - feed passage
Red - alignment pins
Green - pin opening/pintle


Marker - part name
Black - needle guide
Red - pin
Green - pintle tip

In this picture the needle guide has 3 basic functions; to support the pintle in it's movement, to control the return rate, and also to control the allowed vertical movement of the pintle. If the tolerance is lost between the nozzle and guide, the pintle will stick open, foreign debris is often the cause. Removing material from the upper edge of the needle guide, also known as the stroke-limiting collar, will increase the allowable vertical movement. The pintle tip can also be ground to increase the dead volume in the nozzle tip if in a VCO style, or blind-hole if in a Sac style.

Marker - part name
Black - pintle seat
Red - sac/blind-hole

This picture shows a closer view of the tip style, this particular nozzle is a Sac style with cylindrical blind-hole.

 

Weston...
Nice photo's of a injector taken apart.......Andy

 

There will be notes, when I get some more time...It may get a bit technical.

 

thats good. nice pics

 

Keep them coming,you can not get too technical for me.

What injector are you showing torn apart?.

 

Spare body I had laying around, but somehow I think you are interested in the nozzle, it is from a Cummins 5.9L application, soon to be sporting 8 spray orifices.

 

im deffinately waiting till u get more indepth here weston.

 

This is great to see , thanks for posting

 

Thank you weston

 

Awesome pics, thank ya Weston