Same as any other compression fitting
No.
NO!
compression fitting.
Never
17mm spanner
http://wiki.answers.com/Q/Can_you_use_compression_fitting_on_brake_line"
Compression fittings unscrew. Inside you will find an 'olive' (a thin copper ring) which is compressed onto the pipe to create a seal when the outer nut is tightened up. If you wish to replace the compression fitting then you may need to use a junior hacksaw to saw through & remove the olive - be careful not to cut into the pipe unless you wish to replace it too. As for the dishwasher I would guess that you could use the same fitting unless it is leaking. If it is leaking then replace the olive as above.
Sweat a female fitting on the copper or use a compression coupling between the two.
All, but one at a time. What your testing is the compression of each cyclinder. Remove them all when checking compression.
From my research you will need a 5/16 line compression removal tool. Slide tool around male end on filter and slide into compression fitting, squeeze and push towards fitting to remove. I'll let you know more after I finish replacing my filter today. Going to auto parts store to pick up my cline compression tool now!
No. Compression fittings are NOT for steam pipes