CA no oil pressure!

Hi I just joined this forum because I have been working on an AC. This tractor has been sitting for at least 15 years. I rebuilt the carburetor and rebuilt the distributor and now the tractor is running and starts great and fast. I looked at the gauge though and the pressure gauge doesn’t move. So I took the gauge off the tee and there was oil in the tee, but I decided to pour some down the tee to top it off to try and prime the pump. I started it with the gauge off and the elbow fitting off and it will push oil out of the top of the tee when I start it but after 3 or 4 seconds it will stop pushing oil out. What should be my next step to get some pressure?

you changed the old oil ? ...... Or it looks real good and is FULL ?

The oil looks good and is full. I have not changed the oil yet, I need to weld a nut on the filter to get it off it is stuck pretty well.

this is the fiilter.... the blue circle is the location of the pump inside the bell housing on the end of the cam shaft.... the yellow arrow is the TEE that comes out of the top of the pump and has a steel curved line to the bottom of the filter... take that line off and pump oil down the tube into the TEE, down into the pump... 10w-30 oil is fine... 20w50 is a little thick unless it is plenty warm ambient outside.

I’m sure there’s sludge in the pan from how long it has been sitting. I will drain the oil and remove the pan and make sure everything is clean if i can get my hands on the right oil filter today.

This filter has been on there for a long time and I tried taking off by hand but it’s stuck on there. I will use a band wrench and if that don’t work I will weld a nut on the top. Should a 3 3/4 band wrench work?

Cut yourself a strip of sandpaper that just goes around the filter,sand side on the filter,put your filter wrench over the sandpaper, get sandpaper and wrench as close to the threads as possible.

When you use the screwdriver filter wrench be careful not to ruin the stand pipe.

There is no need to use a screw driver unless you bought an old tractor / truck and the original owner put it in  with a breaker bar !!....  Filters that i have put on, i can take off with an 8 inch long filter wrench..

It’s like a normal filter and the threads are in the middle like a regular filter on a car or truck, and there wasn’t much oil in it when I took it off

Edited by 84 prospector - 31 Aug 2022 at 6:02pm

I poured oil down the center of where the filter screws on until it was full and filled the tee up and started it and it was steadily streaming oil out of the filter base and didn’t stop like it did on the tee.

Is that filter system the reason it doesn’t have pressure?

Yes, that is your problem.... The factory TEE  above the bell housing has a tube running to the filter... the OUTLET of your filter goes to the GAUGE and where else ?  I can not tell what the steel pipe / tee / gauge are all connected to.

I looked on e-bay for "allis  oil filter housing" and came up with this.. It mounts to the engine block with two bolts and the oil drains into the block thru the center hole... The guy wants $90.  ........ dont think i would pay that.. Again, you can run quite some time with NO FILTER... just plug the line.... see if you have pressure from the pump to gauge.