1991 Caprice 5.0L Compressor Install


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Old 04-20-14, 02:18 PM
W
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1991 Caprice 5.0L Compressor Install

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Replaced the original GM R4 compressor , today . It was a belly leaker .

It used o-rings to seal the lines to the compressor body .

The new R4 compressor uses sealing washers . I put the gold / brass / thin one on the suction line . Also came with red and green sealing washers for the high pressure line . I used the green / thick one . Did not use either the thick or thin insert ? Could not figure them out ?

Also replaced the accumulator dryer . It only came with one new o-ring . Had to re-use one of the old o-rings . :-( Should have went to the supply house then and there and purchased 2 new o-rings . But it was about to rain and I needed to get the system buttoned up and vacuumed down .

Vacuumed the system down & I have a leak . :-(

Used Nylog Blue on all o-rings and sealing washers .

I will try to get some new o-rings for the accumulator . Did I mess up on the sealing washers ? Should I have used the thick insert with the thick high side sealing washer ? One side has a " step " machined , to a little smaller diameter . Does the step go inside the end of the metal line ? Or towards the compressor ?

I have not put any refrigerant , into the system , yet . I used oil with UV die . May have to pressure up the system , enough to bring the compressor on . And use the UV lite to try to trace down the leak or leaks ?

What would be the chance the vacuum leak could be the new compressor shaft seal ? That it has not " seated " to the shaft , yet ?

Thanks ,
Wyr
God bless
 
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Old 04-20-14, 06:17 PM
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God bless. It leaks somewhere else. Likely cracked ALUMINUM line that was backleaking onto the old compressor, making you think it's the comp.
 
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Old 04-20-14, 11:02 PM
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Not saying you are wrong .

However , with the oil containing UV dye , and the UV lite , you could see a line of " leak " at the places where the different parts of the body of the compressor , were joined .

And , you are certainly correct , I probably do have leaks in other places , too . :-(

God bless
Wyr
 
 

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