OIL COOLER HELP

[1206farmall]

I need HELP HELP please!!! Kk heres my oil cooler of my 1995 f-350 7.3, i replaced the O-rings in the elbows cuz they wer leakin. and when taking it off that little pressure valve cylinder (look at the pic below) thing fell out and never saw exactley how it goes back in, so the hole circled in red is were it belongs, but can someone please tell me which end of thay cylinder goes IN the cooler elbow, NOt in the block, but on the block theres no hole big enough for the cylinder, only the spring, so please help HELP HELPO HELP please!!! and the pic is of the oil cooler on the side the filter screws in and the other pic is of the control valve for the oil pressure, HELP HELP !! PLEASE!

[dieselwezel]

I just had the same happen to me last week when i replaced my cooler,from your pics. iirc the spring goes into cooler body first then the control valve, make sure to look for wear marks on this valve where spring has made some markings,to make sure it goes in on the right end. Hopefully you get what i'm saying lol...
Good-Luck