How to remove oil cooler lines

[dagman60]

I have a 1998 MH on a P32 chassis with a 7.4 liter engine in it (although I believe the chassis is a 1997 model). One of the two oil cooler lines has begun to leak at both ends of the rubber hose portion, where the metal tube is crimped onto the rubber. I want to replace both lines. The problem is, I am not sure how to remove the lines from the engine. It is not entirely clear to me by looking at the connections, and I don't want to damage anything trying to figure it out. I have the service manuals for the chassis, but it just says "remove the lines from the engine", so I presume it is pretty straight forward.

Questions:
1) Can anyone tell me how to remove the lines from the engine. I have attached a photo of the connections.
2) I get the impression from other posts that the engine cooler lines are no longer available. Is that true, and if so, how do I go about getting replacements.

I would appreciate any help anyone may be able to offer.

Thanks.

Dave

[EngineerMike]

Many parts shops, radiator shops, etc. can fab the new lines. In one scenario they take your ends, cut off the crimp connections, & tig-weld on a new fitting for a new crimp. If the metal tube section is long enough this works easily. I did a refrigerant line recently, about $40 at my local radiator shop.

As to the connection, looks like there is a hex body below the top hex/angle part of the fitting. My guess is a thin headed wrench, maybe a crows foot on a ratchet & extension to get at the hex fitting below?