No oil pressure after rebuild

[Bgblock427]

I need a diagram of the oil circuit for a 3307 engine I don't see one in the manual.
If you have seen my previous posts I rebuilt a 3307 engine for a friend that we had problems getting parts for.
The engine fires up perfectly but no oil is getting to the oil pressure sensor. I verified that using a mechanical gauge that there is no oil.
My guess is one of the small expansion plugs under the front cover didn't need to be there. I checked the pump when it was apart and yes the o ring from the pick up tube was installed. I will be pulling the oil pump cover off today (not looking forward to it as the tractor is all back together.)
Hoping someone has a diagram on here, always a help! Thanks
or a photo of what plugs needed to be installed under the cover.

 

[Bgblock427]

pretty sure this is where i screwed up, i think i put a plug in this passage thinking it was a water passage

 

[Hugo Habicht]

Parts list says "cap, sealing" for parts 150 though.
That would be a plug, wouldn't it?

 

[North Idaho Wolfman]

Yes if you put a cap/plug where the red is there that is 100% your problem
That is an oil galley
The plug should be in the green spot only.

If you pull plug 100 (Yellow) you will see the cap/ plug in the block

 

[Bgblock427]

Yes if you put a cap/plug where the red is there that is 100% your problem
That is an oil galley
The plug should be in the green spot only.

View attachment 154137

View attachment 154139

If you pull plug 100 (Yellow) you will see the cap/ plug in the block

View attachment 154138

Yep. pulled the cover and the plug was in the hole, I feel better because I didn't install that plug the machine shop did. I can tell and the hit around the edges with a chisel to keep it from coming out. Checked oil and no glitter, engine was only ran a couple of min, so fingers crossed it didn't hurt the bearings. Ill post a pic later.