o-ring seal replacement for injector pump

[boxr_fan]

I recently had an engine rebuilt and am having a problem with the fuel leaking from one of the injector pumps. The engine is a D1503 and the tractor is a L3010.

I've been working with the company that did the rebuild and they are sending me new o-rings. The mechanic said that after isolating which injector pump is leaking I should be able to remove the hard fuel line and remove the injector pump, replace the o-ring, and reinstall the injector pump.

Is it that simple? I thought the injector pumps were "tuned" to the engine requiring adjustment should you remove.

Any advice/help would be appreciated.

 

[kennyd]

I am confused (easily done)...

You should have only one injector pump, and you will have one injector per cylinder. If what is leaking is a O-ring on one of the injector's-then it is as simple as removing the steel line, removing the injector, and replacing the O-ring. There is no timing on the injector itself.

 

[boxr_fan]

Your right, it is the injector (3 separate injectors that threads into the pump) although my parts book refers to them as "injector pumps".

That's good to hear that it is that simple.

One other question...then why is there a retainer bar to prevent the injectors from turning?

 

[kennyd]

I have never heard of a "retainer bar" between injectors. Can you get a picture?

 

[rogc]

Sounds like a bosch md mini injector pump. I have a Mini excavator with a pump with the same problem. Started to remove it and discovered have to remove intake manfold to get all the bolts out. hope in will just lift up and out with out disconnecting any components other than lines to injectors. Am getting very nervous about having to make any ajustments reinstalling it after i have it rebuilt. I can't find any procedures to do this even in Kubota shop manuals i bought. Would appreciate any help or ideas in completing this project.
Thank You: rogc@optonline.net

 

[crankshaft21]

If you indeed remove the injector pump, it does have to be timed when re-installed.. There should be a dot or mark on the drive gear and a dot or mark on the injector pump gear.These marks must be lined up and the number 1 cylinder on compression stroke. When not done properly, damage can occure. I have seen this done the wrong way.

 

[rogc]

Thanks: going away for 3 weeks. Will post any questions when i get back on this project. rogc

 

[Pkendallsr]

Have a 460 long w/ a D-115 engine need to replace o- rings on the lever shafts. Is there an easy access to these 2shafts