I need to replace the automatic transmission cooler hoses on my ’99 ML 430. Questions:

1.) With the engine off, are the hoses pressurized?
2.) Will I loose more ATF fluid than what is in the hoses?
3.) What is the easiest way to loosen the fan shroud so I can access the cooler hose connections by the radiator?
4.) What is the correct way to check the fluid level once the hoses are installed?
5.) Any other tricks in doing the hose replacement correctly?

-Thank you very much-

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Jim Herold--Current: 1987 190E 16V, 1999 ML 430--Past: 1971 280 SL, 1972 250