450 HLR transmission

I have been doing some work on my machine and traced the transmission lines to and from the oil cooler by the radiator. According to the manual (if I interperate the drawing correctly) the oil pump outlet is the front connection on the gearbox side, and the return is the second or rear connection. If this is the case, my machine has the two hoses backward, which means the oil will be flowing through the relief valve in the filter.

Can anyone verify or enlighten me on this as I would like to get it right. I have found several things wrong so far and I think that this is as well. I am surprised the machine ran at all with what I have found to date. The plus side is once fully finished, it should be pretty good all around.

As usual, thanks in advance for any information.

J.