Air Conditioning Pressure

[Ginja]

Sorry, silly question but I can't get the search to return a result. I believe the Gen 2's have an issue where two seals on the compressor get compressed and start to leak, requiring emptying the system, replacing the seals and refilling. Is the same issue present on the Gen 3 as I have air conditioning whose performance has decreased over time, in exactly the same way as my Gen 2.

[Steve-Indy]

There are several "O" rings in your A/C system. Time and heat do take their toll...and, the compressor itself does get hot. The two "O" rings a the compressor are fairly easy to change.


Before you start changing out accessible "O" rings, you might want to refill your system using R134a with dye...then inspect everything with a UV light source. Also once refilled, check the two fill-port Schrader valves for leak...such as bubbling though a small amount of soapy water or "spit" smeared over the valve itself. Often times, these valves can be tightened with the proper tool and the leak disappears. Do not try to remove these valves from a pressurized system as the valve can shoot out like a bullet. There are professional tools for dealing with the valves.

In the end, it is best to evacuate/recover the system and refill it with the help of a technician and a proper servicing unit. Admittedly, I often do a refill or two with our Vipers before going to a pro.

A/C Pro sells small packages of "O" rings and a kit for port servicing/repair through auto parts stores for a few dollars each.

[Ginja]

Thanks Steve, I had not thought of checking the Schrader valves, I used to mountain bike a lot so have the tool for them I've no intention of doing anything without the system emptied - I've heard Fatboys tail of depressurising and it not working...

[Old School]

There is a tool available to replace the Schrader valve without depressurizing. I've used them (not on a Viper), they work.

[Steve-Indy]

Agree...As I have posted previously and above...such tools do exist. Mine is a SnapOn and works quite well with a pressurized system...as long s one understands the procedure. I generally do not suggest using it by folks without experience or coaching.