Together with other front engine work, I plan to replace the original factory accessory (A/C compressor, PS pump, and alternator) bushings on this 1991 240 with 141,000 miles. While searching for information about replacing these bushings, I came across a question submitted to the Brickboard in 2010 seeking advice on how to proceed. One individual ("punk240") who responded to the question wrote"
"You WILL have to unbolt all the components, but not disconnect their lines. The PS and AC are held in place by a large aluminum bracket that has 4 hidden bolts (not so "hidden" after you get the components out of the way)." And later "But to reiterated... Removing the bracket is the ONLY way to go."
1. Alternator. I've looked at this one from above and below. I see a bracket fastened to the engine block held in by two bolts just above the oil pan. Should I remove this bracket? Doing so would make it possible to take the whole assembly to the workbench to install the new bushings.
2. Power steering pump and A/C compressor. Can't see this area clearly enough. Where will I find the "hidden bolts" to remove the aluminum bracket? Should I remove the PS pump first in the hopes of seeing the area more clearly? The writer/responder referred to above wrote " - - - - but not disconnect their lines". Does this mean the bushings on these two accessories will have to be removed and new ones installed while working under the hood or under the car? I could probably disconnect the hoses from the PS pump and do that one on the workbench, but I do not want to disconnect the A/C hoses.
3. The responder also wrote " This will be a good time to clean the Idle Air ducting, replace worn belts, clean the block.. that sorta stuff."
What and where is the "idle air ducting"?

4. Another thought that occurs to me is that the responder might possibly be referring to an earlier model 240. If this is the case the information may not apply to my 1991 240.