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RETRO FITTING C171 CHRYSLER COMPRESSOR

iceman2555 on Tue February 26, 2008 11:09 AM User is offlineView users profile

Looking for some info. Received a call today concerning the retro fitting (yep it still goes on and on.....
Any way the C171 was one of those recommended not to retro fitt because of the control valve issue. However, seems like someone did an article on an adjustment procedure for control valve adjustments on these units.
Does anyone remember the procedure or a link to this information.
Thanks,

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The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson

bohica2xo on Tue February 26, 2008 8:34 PM User is offline

I don't recall anything about a control valve in the chryslers, but there is a lot I don't remember anymore.

What about this thread?

C171 replacment

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"Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms, as the blackest."
~ Mahatma Gandhi, Gandhi, An Autobiography, M. K. Gandhi, page 446.

iceman2555 on Tue February 26, 2008 10:40 PM User is offlineView users profile

For about 3 years Chrysler used the C171. which has two control valves. We played around with this thing for awhile....doing this...doing that to see if we could make the darn thing work well with 134a. Chrysler, unlike GM, did not offer a replacement valve to work with 134a. The retro was a bit difficult...getting recharge rates within a working range to mimic 12. We still felt that the procedure was a bit more than the 'standard' retro fit procedure and recommended that this along with other models stay with 12. Of course, Chrysler was very emphatic about retro fitting....a simple "Don't Do It!".
We had an account in the mid west...no not the "A" boys that were buying the 171's by the truck load and returning about 99.9% as warranty. Seemed every clinic we did the questions was....'How the heck ya make these things work.....!" Often the language was a bit more colorful...but the idea was expressed.
Well today get a call concerning this very thing...a 91 in for compressor service and the tech informs me that 12 is no long legal in North Carolina. In the deep recesses on my mind, I remember a article concerning the adjustment of these control valves to allow the compressor to function with 134a. The adjustments were made using a large flat screwdriver and were accomplished while the system was operational. Had to drill an access hole in the mounting bracket to access one of the valves...but for the life of me...can not remember where I read the article...it was on the net...but google could not find it....was hoping someone here may have remembered...or perhaps...the author himself was looking on.....
Anyway, this guy was going ahead with the retro.....yeah gads....wish him luck.....
We were able to get the system to work very nicely by changing the condenser to a more efficient unit....then a full charge of 134a into the system...and it did seem to work much better...however....no one wants to hear the 'new condenser' suggestion.....when for a 100 bucks or so...can take much of the retro headache away.....but then...when the normal check out of a condenser contains the following statement.........................
"Yep..its got one!!!" what more can be expected.

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The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson

me4get on Wed February 27, 2008 10:12 AM User is offlineView users profile

6c17 compressors have a control valve. The C171 was precursor to the A590. C171 and A590 have almost identical internals.

Edited: Wed February 27, 2008 at 10:14 AM by me4get

iceman2555 on Wed February 27, 2008 4:38 PM User is offlineView users profile

You are entirely correct....thats what happens when one looks at his notes with dark glasses.....the post should have been for the 6C17.....ancient minds filled with the remains of too many molecules of R12...

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The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Thomas Jefferson

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