Rebuilt injection pump 580B wont start

Thank you for all your responses. I will update everyone when theres more progress.

Angus, On the injection pump gear, Look for a round dimple just a few degrees to the right of center If you drew a line vertically with the key slot to the top. The dimple will be on the outer ring to the inside of the gear teeth. I am looking at one of those gears right now.I hope I described that so you can find yours.

A picture of the pump drive gear or both gears would help anyone reading this thread for timing help.

Good idea! And here is the picture to go with my crazy in the head description.
On the injection pump gear, Look for a round dimple just a few degrees to the right of center If you drew a line vertically with the key slot to the top. The dimple will be on the outer ring to the inside of the gear teeth.

Perfect !
Tooo bad a drawing showing that, was never put in the service manual. Or the installed gears with the pointer in the proper position.

Heres the latest updates. Im getting really pissed. This should not be that difficult. Eric 1 cnc...thanks for your picture and drawing but i did not see it until i came on here tonight to respond with my frustrations. Here goes, so as you recall my buddy has been doing all the work not me. This is not my area of experise so bear with me. He sent the pump back to the pump guy again to have him re-check everything. The pump was bench flowed and is working properly. When he had the damn pump and shaft out last time he some how lost the roll pin or whatever you call that piece that goes into the hole in the injection pump shaft. Well, it fell out and he couldn't find it. So i went to my local diesel shop and they ordered me a new roll pin. He put it in and set the flywheel to 8 degrees before top dead center, lines in the pump window lined up. Pump shaft was not 180 degrees off as it was matched with the dimples. This thing will not start. Im assuming the damn timing is off regarding the pump gear but i dont know. The worst part is the damn roll pin some how came out apparently while he was turning it over and now i think my injection pump gear is junk. I will send you pics to show that. Called up the local case dealer and they say that the injection pump for that model is either supposed to have a half moon key style or a square key. Never heard of just a roll pin that sits in that groove. Even talked to two different diesel shops who said the same. Obviously there is no key or whatever you call it on my pump shaft. Just a small hole with tapered shaft on end of injection pump shaft. Am i missing something here? A quote on a new pump timing gear from case was like $1250.00 !!! Even if i had to buy that gear whats to say this doesnt happen again? Im beside myself. Any thoughts as to what the hell is going on? I'll attach pictures of my gear and the pump shaft.

Is that a square key or a half-moon key in the gear ?
Is there a slot on the pump shaft that we cannot see.
Or just a hole for pin ?

That does not look like the right shaft. Here is what it SHOULD look like.

We’re you on tdc in this pic? I don’t see the mark on the cam gear that should be at the pointer

There is no key or slot in the pump shaft. Only a hole. As far as the pump gear there is a square notch or keyway in the gear but i would think the way that it's chip or battered it mite be shot? Also i dont believe its at top dead center now. Its wherever it was when he stopped turning it over and removed the gear. I dont understand? So if it has or had the wrong shaft how did it work before we decided to have the pump rebuilt?

If you go back to post #14 I think it was,Tinkerer posted a schematic that shows the shaft. I didn't notice before but, there are 2 different shafts shown. 1 looks to have a hole like yours and the other shows the shaft like I have with a key.

I would think the gear for the shaft with a hole would have a hole for a roll pin. Something weird is going on with your motor.

You did say that your friend sent the shaft in with the pump to be rebuilt. Long shot but MAYBE they sent a different shaft back.

I have never seen a pined shaft and a gear with a key-way together.
That is why I asked my previous questions.

I dont know. I can ask him. He sent the pump there twice. Once to be rebuilt and once to be rechecked. Its possible. So, how does a pinned shaft work with a timing gear? Im assuming theres a notch cut out in the gear and after they are lined up you put the roll pin in some how? Can someone explain the procedure? And secondly would this explain why its not starting? Mismatched set of parts? Lastly regarding the timing gear from the pump. I saw eric 1 cnc's diagram about the notch and where to line it up. But where does that tooth on the gear you have referenced go to? Does it line up with that double pointer. Kinda confused on that. Sorry

My buddy is positive that the injector pump shaft was s "pinned shaft" and not "keyed". The gear obviously has a square key. Is it possible that it ran with this set up? Ive had this machine 21 years and never touched the pump before this past winter. Where do i go from here ? Can the shaft i have be machined with a key? Frustrated

Take a look at this.It appears some shafts would have a roll pin. The roll pin would stay in the shaft and not fall out. So, I would say it is possible that yours always was a roll pin. As for the damaged keyway in the gear, If it was mine I think I would buy a used shaft that had the key and use that.

https://www.ebay.com/itm/1144144063...MI1bvE5rOA8AIVDLLICh1zcg9jEAQYBSABEgIeTfD_BwE

I don't know "nuttin" ... After looking at Eric's ebay picture and the picture of the gear ... I would suggest, the roll pin has worn the gear keyway. With the taper, the gear should be locked onto the shaft... but with wear, perhaps the gear moves. I had a similar problem with a small engine. The flywheel key was just slightly worn, throwing off the timing.

i have seen a locating pin-style for timing gears but i don't remember where. cummins accessory drive maybe? the pin is usually a solid pin--may be hardened. all it does is locate the gear properly. it does not drive anything. the taper on the matching gear and shaft when torqued correctly is sufficient. if the keyway in the gear is damaged like shown, it should be replaced. it may have come loose, otherwise, it would not be damaged. if a new one is that expensive, i would try to find a good used gear

AB;
Call the parts dept. at Farmland tractor supply. I think they are the vendor that has the shaft for sale on ebay.
I don't know if Randy is still there. I have talked to him several times and he knows his parts.
He may have the drive gear if yours needs replacing.
https://www.farmlandtractor.com/

Try calling Dale at Tractor Stuff I've gotten used parts from there before,I think they may have some old Case parts laying around...