Adjusting Fuel Screw on DB2 pumps with pics

[Dieselcrawler]

Step by step on how to turn up or down your fuel screw. ***DISCLAIMER*** WE DO NOT RECOMMEND ADJUSTING THIS SCREW WITHOUT THE ADDITION OF A PYROMETER! THE IH 6.9/7.3 ENGINE RUN WARM IN STOCK FORM. TURNING UP THIS SCREW CAN CAUSE ENGINE FAILURE DUE TO EXCESSIVE EGT.

Please unhook battery cables prior to starting this so there is no chance of engine turning over by accident.

first remove the oil fill or gear cover from this location.

You must be registered for see images attach

u will see this

You must be registered for see images attach

bring the stud around till it is at the 12 oclock postition like this. use a 15/16th socket on the harmonic balancer bolt to turn over.

You must be registered for see images attach

find the little triangle cover on the pass side of the pump and remove. dont damage the gasket. a pint or so of fuel will come out. place a rag or 2 under the pump to catch it all.you can use any rag, doesnt need to have sheep on it, just heard ron likes sheep...it will look like this

You must be registered for see images attach

inside that hole is the adjusting screw. if the pin on the front of the engine is at 12 oclock, the screw will be visible with a mirror. will look like this.

You must be registered for see images attach

closer veiw.

You must be registered for see images attach

turn that screw clockwise to increase fuel. counterclock wise to decrease fuel. screw is a 5/32 allen.

 

[John Deere]

That's a great post, I had not thought of taking the filler neck off to use the dowel pin as screw locator.

 

['94IDITurbo7.3]

that crew can be really hard to turn as well, so be careful. don't force it!

 

[Hardass559]

perr banks instructions on how to set it to axcess the screw very nicly done

 

[90ididoorguy]

Thank you for the very informative write up you guys are awesome

 

[riotwarrior]

Very nice write up....I like the concise descriptions and the images.

Al

 

[Hydro-idi]

Very nice write-up. I have a feeling that lots of people will be fiddling with their IP's in the near future . Good job on the pictures as well

 

[160k87F250]

Ron likes sheep?!?!?! I never would have guessed.........

 

[icanfixall]

One thing I feel is an overlooked point is that plate to access the alen screw must be cleaned off BEFORE you remove it. Use brakeclean and an old tooth brush but get it clean... Any dirt that gets in the cover area will ruin the pump. So cleanlyness is next to.....

 

[Dieselcrawler]

Very true Gary.

 

[Devon Harley]

nice write up i just bump the sil an stick the allen in an out an takes maybe 5 trys but that looks alot easier.

 

[subway]

Nice write up!

now we need a mod to change Rons name to DSLsheepcatcher

 

[hesutton]

Are we implying that Ron likes mutton sandwiches/chops/BBQ................... or that Ron really, really, likes sheep?



Heath

 

[saburai]

Thanks Corey
I'm assuming that the filler neck/gear cover was originally equipped with an O ring since there's a groove. On my truck it was glued down with black RTV. Unless it's a standard size that I can source local atime the auto parts or hardware, I guess that's how it's going back on.

 

[Dieselcrawler]

Nope, just rtv. Never had a oring