Oil Pressure Issue Cummins N14

Drained my oil and no metal at all in the oil. I pulled my piston cooler nozzles. One was broken but I’m 99% sure I broke it when I pulled it out. It was hard to get the the one behind the filters out and I think I broke it when I popped it out.

so I’ll be dropping my pan tomorrow. Dirty job

 

So far I haven’t found anything that sticks out as the problem. I changed the oil pump and changed all piston nozzles since a couple were brittle. I did have a lot of oil build up on the suction tube. So there maybe a leak there. Gears in my pump seemed okay. Maybe it was the high pressure regulator.

I power washed under my motor tonight to get the gunk off and will be pulling the drain pan tomorrow to get the broken piston nozzle out. Plus I can inspect my bearings. Probably won’t be ready to start her up until early next week.

 

Here is the oil pump prime procedure for anyone who needs it in the future.

On CELECT™ engines, remove the lubricating oil temperature sensor from the lubricating oil pump cover. Lubricating oil pumps on N14 STC engines are equipped with a 9/16-18 UNF CompuchekT coupling nipple. Use the coupler, Part No. 3376859, to connect the priming pump to the coupling. Install the priming pump oil supply hose to the lubricating oil pump coupling. Use clean 15W-40 lubricating oil from a drum or a container. Supply oil to the lubricating oil pump and engine. Allow the oil to flow until the oil pressure gauge indicates a maximum pressure of 210 kPa [30 psi] at the main oil rifle to prime the lubricating oil system. Remove the priming pump oil supply hose and install the lubricating oil temperature sensor (CELECT™ engines), or 9/16-18 UNF CompuchekT coupling nipple (STC engines). Torque Value: Plug 34 N•m [25 ft-lb] Sensor 34 N•m [25 ft-lb] Wait 10 minutes to be sure the lubricating oil has drained into the oil pan. Use the dipstick to measure the oil level. Fill the oil pan to the specified ‘‘high’’ level.

 

Help Needed*** I was putting my pickup tube back on this afternoon and noticed there is a lot of play in the oil pickup pipe that comes out of the side of the oil pan. Almost so much that I'm not sure the pickup tube O ring will seal. The pipe pushed way back in the pan when I tried to assemble it. I didn't notice this was abnormal until I went to put everything back together.

I assume this is not normal play. Should the internal pickup tube have play? I believe that I will have to replace the tube mounting brackets inside the pan.

Unfortunately I will need to pull my oil pan again and replace the internal pickup tube mounting bolts. but I am betting thats where my problem happened. Pump probably started sucking air.

 

Here's a picture of what I'm talking about. Not sure if these mounts have a rubber bushing or something.