injector pump line removal

[MF in Canada]

Hello and good evening,

I have, with much help from you all, removed the injector pump from my MF 245. It is a CAV pump # 3233F671.

I have two troubles, and will ask the first one here this evening. The three lines to the injectors came off very easily. The other two, one at either end of the
pump, would not separate from the pump after the top nut was fully loose. Therefore I removed the cap/nut below the line and thus was able to remove the pump. This
leaves the caps with the tractor, and I believe they should be with the pump so it can be rebuilt properly.

Is there a way to get these off the lines? If so, how? If not, will the diesel shop be able to work on the pump without them?

A picture is below. You can see that the line is "stuck" in the cap/nut. Is it meant to be???

Thank you in advance,
Eric

 

[c.oawright]

There is a rubber grommet called an olive that is keeping the line in. They get hardened over time and are difficult to remove. The new ones fit tight too.
You may need a sharp pick to cut the olive and pick pieces out to get it free.

 

[Dieseltech]

What c.oawright said, use a sharp pick to break up the old line grommets to get the line out. The large rear nut needs to be in place as it holds the pressure regulator parts in place. I send two new grommets back with the pumps I repair/calibrate when done..

 

[MF in Canada]

Wonderful!

Thank you to c.oawright and Dieseltech. Can you tell me whether I work that olive grommet out from below? Or above?

Put another way, in my picture, do I pick away at things from the bottom, below the lower larger nut? Or go down into the larger nut from above, trying not to damage the internal threads or the line? Must be from below, I guess... but can you please confirm?

Thanks so much,
Eric

 

[Dieseltech]

From above, slide the nut higher for more room if needed. A 1/16 inch drill bit in a drill will help too.

 

[MF in Canada]

Thank you Dieseltech and others,

Last night as I was falling asleep I realized the olive had to be taken out from above. And I've got them out now - a bit cold at -8 celsius for such work, but I warmed them up with a droplight.

I have a couple other small questions. One is simple:

What is the best procedure for old gasket removal and new gasket installation? what tools are best for gasket removal, so as not to score the aluminum housing? And should anything be put on the new gasket (grease?) or should it be put on dry?

The second question is more detailed. Because I took off the big nut where the line attaches, the spring underneath had a chance to fall out. And a little gizmo, which I think is not in all these CAV pumps, called a "fuel transfer pressure adjuster" also fell out. I'll paste in a photo of it from Ebay. I do not know the orientation (up and down) of this "fuel transfer pressure adjuster", nor whether it goes under or above the spring. I can't find this info online, though I have looked in many places. Do you know the orientation and order of installation of these little parts?

Thank you again so much, I find this forum incredibly helpful. I don't really know what I'd do without you all, actually.
Eric

 

[Dieseltech]

Use NO grease on the gaskets. The pressure regulator has several parts inside, and is adjusted only on the test stand. The pressure adjuster goes in with screw UP, and the heavy hold down spring then goes over it, and the heavy nut has a shoulder to hold all in place. Far as cleaning, I tear pumps completely down and soak all steel and aluminum parts in carb cleaner I have to remove all dirt and paint, also loosens the stuck on gaskets too. Then pumps are re-assembled and calibration set on the test stand, and checked for leaks before sending back.

 

[MF in Canada]

Thank you again, Dieseltech,

I've got it all ready to go out for service. You've been a great help.

Wishing you a peaceful holiday,
Eric

 

[MF in Canada]

Hello Dieseltech and others,

As always, I am so grateful for your guidance. I have got my injection pump back, ready to install. I have cleaned off old gasket material.

My only question is whether I simply put the gaskets on dry, or do I use any sort of sealant on them?

There is the gasket which goes between the injection pump and the timing gear housing. It is some sort of grey composite material. It came from the diesel repair shop.

The gasket on the other side which goes between the timing gear housing and the oil filler plate is more of a paper/cardboard material. It comes from the MF dealer.

Do either of these gaskets need a sealant? Or do they go on dry?

Thanks much,
Eric