Injection Pump leak

[Dunslandloy]

Hello all. I've got a 99 B2400 that's developed a drip, drip leak on the injector pump (see photo). I haven't tackled a diesel injection repair before and know that pressures can be dangerous so any and all input is welcome and appreciated.

 

[North Idaho Wolfman]

The issue really isn't the pressures, it's taking it apart and losing timing of the valves in the pump.
That's the reason you see tamper proof screws in the top of the pump.

The leak is easy to fix, but you need to keep the parts in the proper order and proper orientation.
I have see many a pump damaged or disabled by DYI repairs.

This is the O-rings that are leaking.
There are kits to do it, I can point them out, but I almost always recommend having it professionally rebuild.



Resealing / rebuilding it requires all these parts to be removed, and reinstalled perfectly.
The barrels above rotate in housing and that sets the timing curve of each pump.
If you replace hard parts like the pump and springs you will not be able to know where the valves should be positioned and what shims are needed to get the right travel distance of the pumps.

 

[Dunslandloy]

Thanks Wolfman for the reply and advice. Is this a dealer only repair or could a diesel mechanic accomplish the fix?

 

[Dunslandloy]

The issue really isn't the pressures, it's taking it apart and losing timing of the valves in the pump.
That's the reason you see tamper proof screws in the top of the pump.

The leak is easy to fix, but you need to keep the parts in the proper order and proper orientation.
I have see many a pump damaged or disabled by DYI repairs.

This is the O-rings that are leaking.
There are kits to do it, I can point them out, but I almost always recommend having it professionally rebuild.

View attachment 149354

Resealing / rebuilding it requires all these parts to be removed, and reinstalled perfectly.
The barrels above rotate in housing and that sets the timing curve of each pump.
If you replace hard parts like the pump and springs you will not be able to know where the valves should be positioned and what shims are needed to get the right travel distance of the pumps.

View attachment 149370

Thanks Wolfman. I found a local Farmall mechanic that said he would do the job for me. The family also builds competition pulling tractors. He's repaired Kubota and was quite familiar with the D1105.

 

[CarterLivingstone]

The issue really isn't the pressures, it's taking it apart and losing timing of the valves in the pump.
That's the reason you see tamper proof screws in the top of the pump.

The leak is easy to fix, but you need to keep the parts in the proper order and proper orientation.
I have see many a pump damaged or disabled by DYI repairs.

This is the O-rings that are leaking.
There are kits to do it, I can point them out, but I almost always recommend having it professionally rebuild.

View attachment 149354

Resealing / rebuilding it requires all these parts to be removed, and reinstalled perfectly.
The barrels above rotate in housing and that sets the timing curve of each pump.
If you replace hard parts like the pump and springs you will not be able to know where the valves should be positioned and what shims are needed to get the right travel distance of the pumps.

View attachment 149370

Hi there North Idaho Wolfman, are you able to share part number and supplier info for the O ring kits you mention? I'm going to replace the three 070 and six 100 o rings in the diagram you have attached to address a leak on my B2400. Also, can you share where you found the pump diagram? It doesn't seem to be out there on the internet other than on your post on this thread. Thanks

 

[North Idaho Wolfman]

So your just going to ignore what I wrote in post #2?
My point was that it's not a DYI job and that opening it up can easily leave you with a unserviceable pump.

The picture is all over the internet and several manuals and parts diagrams.

Well good luck to you:

Pardon Our Interruption...

or

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[D2Cat]

Don't worry about the mule going blind. Just load the wagon!