W126

W126 350SD 1991 thrown belt

I'm not exactly sure what happened with my car but I've heard it described as a thrown belt, anyway it broke and ripped my power steering pump off and tore off the belt tensioner pulley.
I'm in the process of putting things back together and noticed that I need a new AC compressor. Should I attempt to replace it myself if I have no prior experience with AC and don't want to buy a bunch of expensive tools?
Also, how do you get the high pressure hose off of the power steering pump where it connects to the pump reservoir?

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1985 300 SD turbo diesel Auxillary Fan Not Working

n/a Auxillary fan for air conditioning system will not energize. Car overheats when using air conditioning in traffic. Fan is new, fuse C has been checked. climate control is newly rebuilt. Air is cold fan is working on all speeds. Read somewhere that the auxillary fan is controlled by temperature switch at drier. Is this correct? How do I go about diagnosing the problem. Thanks

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1983 300SD vacuum diagnosis

Hi, All,

I have isolated a vacuum problem to the red/green plastic line that services (I think) interior switches and servos: with this red/green line attached to its fitting on the vac system, system pressure drops from 45m/g to 15m/g or less with the engine running. When the car is turned OFF, the line holds vacuum (??); when the car is ON, its as if it's open on the other end, bleeding off vacuum (brakes go hard after 2-3 pumps; engine won't shut off if at idle awhile).

Does this behavior suggest a specific component that I should go after?

Thanks in advance!

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