What to look for when removing the cap from your Fuel Screw.

This is the protective cap that covers the Fuel Screw upper left of housing, it is held on by an o-ring.



This is a shot of the crimped on collar just before it was about to fall of.



Here you can see the damage it did to the threads of the Fuel Screw.
Your degree of damage may vary.
If you decide to chase them with a die or thread chaser, remember it is of METRIC pitch.



If you look into the backside of the cap in the foreground you can see the o-ring that captures the nut on the fuel screw, once this collar is removed the cap may no longer stay in place.

In this picture you can also see what the governor spring and the assembly consisting of retaining pin /compression spring /spring seat AKA Top Hat look like.
Also the manual shut down lever at the upper left of the housing.




Jim

 

Wow!!! Awesome post Jim!

 

Thank you so much for taking the time to do this. Very helpful!!

 

can i adjust the fuel screw on the pump under the hood or do i need to pull it apart?

 

Very nice Jim as usual we are very lucky to have you here.

 

Do it while it's running with the intake tube off the turbo and a 2x4 to put over the turbo if it starts to runaway. 2 people make it safer and easier.

 

You can adjust the fuel screw while it is on the truck and running, however you might need to remove some brackets to gain room but go slow and be prepared for runaway.

Check the sticky for the preferred procedure to avoid it from hanging.

Jim