while i'm pretty good/experienced w/ other things on my cars, i've always been scared of the a/c system, and have never attempted to work on one.
to make matters worse, the haynes manual just says "take it to a pro" in the a/c chapter...

so, my '80 300TD won't blow cold, and i can't hear the compressor come on. i seem to remember that if you can't turn the front of the compressor by hand (is that the clutch?) that it's locked up and you need a new compressor + clutch...

is that right, and could it be as simple as that, or is there a way for a shadetree like me to know the condition of the evaporator core, accumulator, expansion valve, etc, and whether they should be replaced simultaneously?
add to that the fact that my current compressor shows R134 refrigerant? should i just shut up, and "take it to a pro" and drop what i'm imagining is $700 or so?

__________________
-lee
'83 300CDT (286k)

former proud owner of:
'85 mercedes euro 300TD
'80 mercedes 300TD
'77 mercedes 280e
'80 mercedes euro 250
'82 mercedes euro 250