Hello Rolland,
Your hoses have right angle fittings on the end that hook to the expansion valve and the evaporator unit. The one hose must be unhooked from the expansion valve. The expansion valve has a "flat" where you can use a open end wrench another wrench will be needed on the right angle fitting. You will then "double wrench" to get them apart. These parts might be std. SAE sizes. The second hose, is connected to the metal line going to the evaporator. You will need to "double wrench" it also. The tight circumstances and awkward angle make this job a challenge.
