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Question about 1955 A/C System
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rexc
Posted 2024-06-26 1:26 PM (#635852)
Subject: Question about 1955 A/C System


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Posts: 59
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Greetings all! I have been talking to someone about the a/c system in a 1955 Imperial. The system is not currently charged and when the Air Temp switch is turned on nothing happens, i.e. the compressor does not engage. The seller says this is because a pressure switch is preventing the compressor from running with no charge. Is that correct? I have seen this sort of switch in Ford products, but I have not seen it in Chrysler products of this general period, though I have never owned a '55. Can someone enlighten me? Thanks! Rex
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57chizler
Posted 2024-06-26 1:43 PM (#635853 - in reply to #635852)
Subject: RE: Question about 1955 A/C System



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Location: NorCal
The low pressure cutoff switch is common in all makes in later years but I don't think '55 Mopars had them.
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rexc
Posted 2024-06-26 2:19 PM (#635854 - in reply to #635853)
Subject: RE: Question about 1955 A/C System


Regular

Posts: 59
2525
Thanks! That's what I thought. There is some other electrical problem with the system or the clutch itself, I guess. I appreciate the answer. Rex
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57chizler
Posted 2024-06-27 12:31 PM (#635869 - in reply to #635854)
Subject: RE: Question about 1955 A/C System



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Posts: 3851
200010005001001001002525
Location: NorCal
Power is transferred to the clutch through a brush or brushes, check for power up to the brush assembly and check to see if the brush(s) are intact.



(Brushes.PNG)



Attachments
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Attachments Brushes.PNG (39KB - 277 downloads)
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mwoss
Posted 2024-07-03 11:14 AM (#635964 - in reply to #635852)
Subject: RE: Question about 1955 A/C System


Member

Posts: 13

Location: West Islip Ny		it does not have a low pressure r switch make sure your getting 6volt at t the compressor clutch brushes probably bad brushes
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