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#1 |
Registered User
Join Date: Jul 2017
Location: Utah
Posts: 35
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R134a fitting installation
I’m slowly replacing and updating parts to get my AC working again, and purchased an R134a fitting retrofit kit. Couple of questions for the experienced:
(1) It came with two high-side fittings (different thread sizes) and one low-side fitting, is this to account for different sizes of high-side sizes or is there a third fitting somewhere in the system? (2) There doesn’t seem to be a way to remove the old fittings. Do the adapters just screw on to the existing fittings, and I just need to remove the Shrader valves from the old ones? |
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#2 |
Senior Member
![]() Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,901
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Re: R134a fitting installation
There should only be two fittings. You don't need to remove the old fittings, or even the Schrader valves (at least with the adapters I've seen). Just make sure the old fittings are clean and install the new ones over them.
__________________
I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson |
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#3 |
Registered User
Join Date: Mar 2021
Location: Goodrich ND
Posts: 55
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Re: R134a fitting installation
The systom I converted to 134A the the adapters just screwed on the existing fittings and I did not have to remove the Shrader valves from the old ones
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#4 |
Registered User
Join Date: Sep 2011
Location: Ark City, Kansas
Posts: 3,332
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Re: R134a fitting installation
The fittings I have used, required removing the old Schrader valves.
Some older cars used the same size fitting on the high and low sides, and some used different size fittings. I'm thinking the kit was made up, to fit many applications... |
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#5 |
Registered User
Join Date: Jul 2017
Location: Utah
Posts: 35
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Re: R134a fitting installation
I think the kit I bought requires the old Shrader valves to be removed, because the bottom of adapter center pin touches the top of the old center pin and prevent the new valve from opening.
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