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Replacing Pressure Line

u118224 on Tue May 29, 2012 9:35 AM User is offline

Year: 2004
Make: Chevrolet
Model: Suburban
Engine Size: 5.3
Refrigerant Type: 134a
Country of Origin: United States

I had no ac within 24 hours of vacuuming and recharging the system. I pressurized the system with CO2 in order to find the leak, and it turned out to be the pressure line from the pump to the rear evaporator (It leaks where the hard line crimps to the rubber line). When I replace this line, is it necessary to replace the rear evaporator, the accumulator, or both?

mk378 on Tue May 29, 2012 10:24 AM User is offline

The line from an evaporator to the compressor called a low-side or suction line, it would be larger diameter than the other one.

For simple leak-outs it is possible to just replace the leaky part, though a system that has sat with zero pressure for a while should have the accumulator replaced to renew the desiccant.

u118224 on Tue May 29, 2012 10:35 AM User is offline

It is the larger line that's leaking. I'll plan on replacing the accumulator as well.

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