So you discovered rock auto was cheaper in this case?  That expansion valve is 
a bitch to replace in those.

Sent from my iPhone

> On Jun 18, 2017, at 11:29 AM, Dan Penoff via Mercedes <mercedes@okiebenz.com> 
> wrote:
> 
> I just cancelled my AutohausAZ order and ordered the whole shebang from Rock 
> Auto.  New Denso compressor, receiver/dryer and expansion valve were about 
> $240.00.
> 
> The expansion valve in these cars is inexpensive and should be changed if you 
> had a compressor failure, as it’s likely that crud from the failed compressor 
> is in the lines and may already be in the expansion valve. You should flush 
> the system as well.
> 
> I’m going to put a screen in my system to prevent stuff from getting into the 
> system should it be there.  I’ve got to call the screen supplier tomorrow to 
> find out where to buy them - I’ll post the information here when I get it.  
> It’s a simple matter to put a screen in the suction side line of the 
> compressor to keep crud out of it.  Since I’m changing my lines, condenser, 
> expansion valve and compressor, I’m not too worried about anything remaining 
> in the system even if the compressor grenaded and sent stuff out.
> 
> O ring set will be about $12-$15 and will be unique to your car.  Buy it.  
> It’s worth it to have all the O rings on hand, at least I think it is.  In 
> some cases the manifold O ring won’t come with the compressor, and it can be 
> a weird part that you won’t find at a FLAPS.
> 
> I have a HF single stage vacuum pump that has worked great for me.  It should 
> be fine for your needs.
> 
> -D
> 
> 
> 
>> On Jun 18, 2017, at 12:10 PM, Floyd Thursby via Mercedes 
>> <mercedes@okiebenz.com> wrote:
>> 
>> Yeah the sites all show the R4 being a choice.  What about the orifice?  
>> Should I replace that? Can you get all this stuff from Rock or FCP or 
>> wherever?  What about an o-ring set?  Are those like a standard package?
>> 
>> The AC on the boy's car I have now worked when we got it on R12, I guess it 
>> just leaked down over time.  I might try to put some majik juice in it and 
>> see if it BLOWS ICE COLD.
>> 
>> I bought a HF single-stage vacuum pump, I am thinking that would probably 
>> pull it down enough before recharging?
>> 
>> --FT
>> 
>> 
> 
> 
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