Ford 6.9L diesel injector pump rebuild ... info anyone?

Hi all,

The shop truck died and it looks like it's the injector pump.

Of course just buying a rebuilt unit is too easy, and I happen to have a spare someone gave to me which I almost have apart. It had some rust inside so it was a bit of a challenge especially without any manual.

I'm probably going to end up buying a rebuilt one, but I really would like to know more info about these pumps and how they work. I did a bit of digging on the internet and couldn't find any real technical info about them ... mostly just "do not try this at home" advice. I could not find one pic of the thing disassembled. I feel pretty good about how far down I've got her stripped without nakering anything up . I found some parts drawings and the part I can't get out is called the cam I think ... it's round with the od pretty much the id of the body. It seems like this part should move freely but because it sat forever I think it might just be seized in there from corrosion ...? I think I got it to move a bit so I'm letting penetrating oil do it's magic.

So ... can anyone lead me to some in depth info about these pumps? It's the DB2 model ... they really are quite the mechanical marvel.

cheers

 

Thank you

 

Thank you

 

Okay got 'er all apart.

Pretty neat system.

It would be cool to see some technical info about what goes into calibrating and setup on the bench.

I'd like to know a bit more about timing them. I think there's info on the internet about that I just didn't digest it yet ... need a pickup of some kind to trigger a timing light or something? ... I get the impression I should not need to re-time if I'm just swapping pumps but of course who knows where she's set up now. Be nice to know if there's a way of rigging up a normal ignition timing light?

I'm also curious about the flow path to the metering valve. I just found this cut away drawing that will probably clarify that.

Anyway interesting mechanical bits in there ... two seperate pump sections and the governor. If it wouldn't of been glued together it would've been pretty easy to take apart. The only part I found broken was the regulator spring for the inlet pump. I have a feeling that's what broke on the one on the truck because there is no fuel coming out the pump at all ... fuel is getting to it ... seperate external mechanical pump like an old chevy feeds this assembly. The cam piece I referred to above does normally move freely. Once I got some penetrating oil in there and got 'er to move a bit, the old heat gun on the aluminum grew the body enough to let the piece just fall out.

cheers
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