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73-87 Chevy _ GMC Trucks => Interior & Equipment => Heating, Ventilation & Air Conditioning (HVAC) => Topic started by: ehjorten on June 26, 2018, 01:33:29 pm

Title: Replacement Liquid Line between Condenser and Evaporator
Post by: ehjorten on June 26, 2018, 01:33:29 pm

Since nobody makes a replacement line besides the Suburban one with the Rear A/C port, I decided to make up my own!  I found that Vintage Air sells their "U-Bend-Em" line of straight tubes with the proper swaged o-ring ends on them.  I ordered some to recreate my stock liquid line that was crusty and damaged and also did not fit to the replacement "stock" condenser.

Here is my mock-up:
(https://lh3.googleusercontent.com/hu6RckebeC4baCo2FIfsU8SGnKjXH3fHD_DJFVkytFkCiCvShhPSE17CXUZFClmJJG6m3uZyGiXIg4Vi-e-zwLH0zxpPQ7eTR-nRinIR78hxfrp7jImHvjL6TVCBgfhgQZELdKgTuANRfUiURZXByH9g6PfnTTCiV8syIPFP_HKXpvVo2_L7DJ-1Dy6OgsAsPW_lBMqSGtKMr-Wy4Xk2GgGFuf2Lxy4t6DgWUsUCUSRZVBr5uIvkmK-3pIKAosgvmlkuanuNekE9Yz-FHDHcIvOSvphrXeo3aif8bpcEdE7nBrhg8MmS1dSe052PCrgDfwTKg10_bJlSH6Yn6dU520Xs3bLMY7EMMP-eFkYX4VBSI5gVkR4yh0TqfjHhTutKJ5u4Gv8VIHag-zRDNBsPTHerieLvOsxrDenspj6CHlQSwJQrVFJUG15ZJLTmOB1cnjuYROH4V5pwvGa5AaAm3W_bYs77eUv7erRcJ81ZVCMUwrlIU-a_berhk3_5ZS5JXYDDdbACysRg6ACB8SuFob3zGhGd4m7HL697EU9CX-jKyt2n8t4v6KDTGCLHMlROS_6U-h0eBoba58XitcDdazr-nwfxtsyXS7wQz36e1qLLxJ38VwQTiRr3kmB9e8ZE3WZE38MG32pGTDjf_2UqLavruN6J8ZEL=w1512-h1134-no)

Any tips for successfully brazing 0.049" wall aluminum tube?!  I keep blowing a hole through my trial sections of tube with my MAP-gas torch!  I do get it brazed, but a hole in your line isn't going to work very well!

Title: Re: Replacement Liquid Line between Condenser and Evaporator
Post by: ehjorten on July 02, 2018, 08:47:38 am

Broke down and got my liquid line TIG welded.  Pressurized it and submerged underwater to ensure it was air-tight before installing.

Here is the old and the new!

(https://lh3.googleusercontent.com/RgO3_lfpw6_A8ygwFN8FOmBlefd5wWXlb-pze-qEoJhfiOU8PKSYgHyr6bubRfqrtjapiQqL3H-NxGzG1vE_NFTRNPCrP_xR6Y0hkzK-z8RzebChY9tNyhJPFxZZuW_1UzWzSDzjyJWV8iL8hvgeMLJRf_GA48Q-hEOiEtOT0zZRLKRUp8pRqBbsqWw977QCKPh4vkaZFbR6RVEer3X7kv6SMj4bJ8iKSkKoQSDPOKI73pIMuMUES6kavjy-T6vOqRZBuXf9LrD0gF2AgYU_hcKirxG31jQmtV8W6HvDEZlZ2qfTs3QDUoChspvGPOcWs6x3WyOp1Q46beaNZLxxBrQ3zROsljqCJgMSL95gRmVRraa3oDw0W-_pPdjT00ZE1bICsO4gdikWZavmK1bcUHMV70F2TSRgSl-24W5BniJHnXwIuuPecsySMdZTpPplqnGgsEI2NJUn9ClBNikVqIOS_oUzxaDi1i8jPLQoayBkvHl9kION244hzRJqZXuJxuu_Eqn01ok9CeB3XRYgCKKXPbt4-S_qNUtQkwmgwZ9G8bQ2GhVtJTKcgNOXsQ4R0B6MZThYyo0V8lKS75Uj6mJE1cOx7oXalWH7nVM=w1512-h1134-no)

And here is the new line installed on the truck!

(https://lh3.googleusercontent.com/myh_zB24qXVZRu0X65byDOTgOdDDC4CvBRyN0RwEpczAcWZokfCL4xbcWHbqO6Ibf72nl31kLxqCGrXPlMfX_7-1veAFHPvdlnUZWNbuT0bB_r6YMok5ftYw0htQkzh7Cie7_MnjvqlECMPBZbFjbz6zlBenSmkyzcuVGJwIZq8KyaUQ03IuMY21h_rPabdvC_8s1rfAMvT3byAE0XsB9Q2wi74SKgVNZ0rp-jZ8g64SIp4myYTYTeyjpneQdxpltqXKL1T21lqX54S1qo2HVZJqKVSe2L1XzCrXvJys8KAfiIk4rev8FpjrEkCI1rdvtqf-YvgpgvYCgPlItcORgWAT_jX0NOrH3TeOehxTrmWrfB24aE7UuNrX8-sOtx3Osg0wEZ-mN-OGqVuak1h2C2p6d-nWcDU218V8mZW6P6ky6pnXpb2HZprCHlT5jiWY41HqQNMDIRjp8Fr0Dg4wXlMl3E2OwHTBex4htjokfBo7osuAI0Q8F_LxKd8Q8Ujq0Ujc3654KjydR6O9cS0-iG4j8h0yRwSGTceTbdc37P3KgZ8aO9-bzN73vrwdITg0KUWJ-NT47kJeio5xlf-NqVl_1R7Z_DT6mMlk5WDbNEXkshllnop557Wukh2vjpKVNeGmWGEH2M5V_RGyWmqms-LTWVdJInkt=w1512-h1134-no)

Title: Re: Replacement Liquid Line between Condenser and Evaporator
Post by: bd on July 02, 2018, 09:47:46 am

Pics aren't displaying.

Title: Re: Replacement Liquid Line between Condenser and Evaporator
Post by: ehjorten on July 02, 2018, 11:03:22 am

How about now BD?  I forgot to put those pictures in my shared album.

Title: Re: Replacement Liquid Line between Condenser and Evaporator
Post by: bd on July 02, 2018, 11:14:40 am

Perfect.  Looks sharp!

Title: Re: Replacement Liquid Line between Condenser and Evaporator
Post by: ehjorten on July 02, 2018, 12:12:38 pm

copied the wrong install picture.  Fixed!

Title: Re: Replacement Liquid Line between Condenser and Evaporator
Post by: bd on July 02, 2018, 02:17:18 pm

The "Fixed" pic is not displaying.

Title: Re: Replacement Liquid Line between Condenser and Evaporator
Post by: ehjorten on July 02, 2018, 02:43:27 pm

Argh...technology!  ;D

Title: Re: Replacement Liquid Line between Condenser and Evaporator
Post by: topp on July 05, 2018, 06:57:46 pm

Rock auto sells them I think, but good job on those

Sent from my SM-G955U using Tapatalk

Title: Re: Replacement Liquid Line between Condenser and Evaporator
Post by: ehjorten on July 06, 2018, 08:30:18 am

AC Delco only makes the Suburban one with the extra Rear A/C Port.  The one without Rear A/C is disco'ed and not even VPI has stock.  There are some Rear A/C Block off kits that give you a machined slug of aluminum, an o-ring, and a nut to block off the rear port, but I wanted something that didn't have that extra port.  I have also found that for whatever reason, be it a combination of OE and Aftermarket parts, but my original line did not align with my new condenser at all!

I didn't take the AC Delco 15568999 out of it's packaging from RockAuto to see if it fit or not, as I wanted to be able to freely return it.  AC Delco 15568998 is the one without the Rear A/C port, but it is no longer available.