it purges air as I prime, then a frequent drip turned into a significant drip on my last trip home

I've looked into the seals, and how to replace them

something is confusing me, and without taking things apart, I'd like to get some info first.

can I tighten up the screw that holds the levers in place?  would that put pressure on the washer/seal possibly tightening in up and reducing the leak?

if not, how does one put pressure against the washer/seal to get a good seal?

I'd like to be able to reduce my leak for  a few weeks, so I won't need the tractor over winter, if I decide to pull parts off.

started as a small drip

late baling season, I started to have pulsing, I believe due to air ingress.

When I'd prime it, I could hear a tiny hiss coming from the area of the shut off.

it didn't seem to change much, until the last time I drove it.  Drove it home 1.75 hours.

There was fuel along the side of the engine/frame and batteries were wet.

when I shut it down, I primed it, and could hear hissing and fuel came out the shut off lever area.

my local diesel shop has nothing.... doesn't know what my pump is, and cant find any reference to it with their supplier

I'm going to AGCO, and keeping my fingers crossed they have some.

When I contacted them about the bushings for the clutch, they didn't have any couldn't source any, but found ONE at another dealer

when I talked to them about O-rings, they had none, couldn't source them, and couldn't find another dealer who had them.

This time, I'm contacting a different dealer that has the ability to E-commerce stuff... seems they have access to different sources.

I sure get frustrated at how up here, dealers want to sell, but provide zero maintenance.  

^^^THAT^^^ right there is the problem.   Up here, finding a "Good" shop is really hard to do

my local diesel pump shop is busy as hell, but their clients seem to be commercial duty large trucks.

I guess those trucks all have proprietary pumps??

I removed the shut-off lever assembly/spring stuff (No23/74054594), leaving only the shaft assembly (No23/74054845)

I removed this carefully.

Then I started to slide the fuel shut off shaft assembly out slowly watching was was moving and what wasn't.

I found that the O-ring was no longer there.... like GONE.

now, I have a question:

does the O-ring sit inside the housing where the assembly goes through, or does it sit against it, in the shallow bevel, and that thin "washer" No31/74053375 just holds it against the housing?

I do not see anything inside that could be parts of an O-ring.   After coffee, I'll check again, but at the moment, I can't seem to see where it might sit, or where it might be

on the shut off assembly that I removed, there is a "Ring" but it is steel, I assume this is just to allow the whole assembly to rotate and not wear on the housing.

the parts diagram would lead me to believe the O-ring sits outside and against the housing... but I'm not sure

need to do some more research.

Yeah... ROCK hard!

at first I thought it was metal...   when I used a pick, I realized it was NOT metal, but perhaps some form of intergalactic material....    I had to cut it to get it out

As for the rest of them, I think I can get the back one on the throttle assembly, but anything inside is out of my reach....    and as you know, my options for Diesel shops is very limited. 

So after having some coffee in me, I took a real good look at it all, and realized my error.

I found a kit of O-rings, and found one to fit, that just was able to go in the housing, and I put it all together.

I made sure the C-clip functioned properly, then put the cap on it, gently tightening the two remaining hex head cap screws.

primed it up, and no noise or leaks

fired it up, and no leaks (the cap didn't start leaking until I ran it hard)

hooked up a cultivator, and did a couple rounds in my small field.   barely any leaks from the pump.

So far, I'm happy with that.

Now, I have a majour fuel leak from some 1/4" plastic hoses that run from the RH side to the LH side over the top of the Tranny under the cab.

I "Think" this may be an overflow for my injectors???   

I'm not sure, but looks like one of the hoses is melted through and a second one is damaged

I'm not sure why it would have gotten that hot under there without flames.

it's always something.

Thanks for ALL the help.

this place is an amazing resource!

Parts book seems to lead me to the line from LH Main tank to "Drip Manifold" and LH main tank to fuel filter

I assume these are return lines.   Looks like I'll need to source some rubber gas lines, and splce them in to the damaged area.

It is not a pressure line, right?   Just a return line?

should be easy to splice in a piece of fuel line.

Your advice on my pump issues was a BIG help.   I sure appreciate it!