Removing 46 Oil Check Valve
I am trying to remove and oil check valve so that I can verify it is opening. Looking at the 42-47 mechanical procedure manual, it looks like the entire unit should unscrew from the block. In the manual it mentions a J-1454 tool that is used to remove it. I've tried to unscrew it and it wont budge.
Are there any tricks, or an alternative tool I can use to get that thing off without breaking something?

Are there any tricks, or an alternative tool I can use to get that thing off without breaking something?

Comments
I had a couple of questions about it to be sure it is ok before I put it back together.
Feel a lot better knowing the engine is 100% getting lubrication now.
Now onto the next adventure....brakes.