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Shrader Valve replacable?

graycenphil on Sat June 28, 2008 2:52 PM User is offlineView users profile

Year: 1999
Make: Dodge
Model: Ram 2500 Cummins
Engine Size: 5.9Diesl
Refrigerant Type: R134

Great forum, thanks.

My system seems to be leaking refrigerant; a few days after charging it no longer cools. I see some green dye around both the low and high pressure service ports. Sometimes I hear pressure releasing when I unscrew the cover.

So my question is, can I just replace the shrader valves, and are they the same ones as on a tire? Or is there something else I should be considering?

Thanks again.

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99 Dodge 2500 Cummins (on WVO)
02 Jetta TDI )on WVO)
06 Jep Liberty CRD
Central ir in the house, installled by me. I love A/C.

Chick on Sat June 28, 2008 5:06 PM User is offlineView users profile

The low side is a replaceable shrader valve, but not the same as a tire, different sealing compounds I believe. The high side if it has a teflon ball type, the service port is changed, not the valve. The cap is the primary seal, so be sure the rubber gasket is inside the cap.. Hope this helps..
The replaceable high side port will look something like this...


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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

graycenphil on Sat June 28, 2008 5:44 PM User is offlineView users profile

Thank you Chick. So does the high side just unscrew?

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99 Dodge 2500 Cummins (on WVO)
02 Jetta TDI )on WVO)
06 Jep Liberty CRD
Central ir in the house, installled by me. I love A/C.

Chick on Sat June 28, 2008 5:50 PM User is offlineView users profile

Yes, but make sure all the refrigerant is recovered.. here's a line from a caravan to give you an idea .. Be careful not to twist the nut on the bottom off the line....



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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

graycenphil on Mon June 30, 2008 1:44 PM User is offlineView users profile

Thanks again. I'll let you know next week when I tackle it.

Phil

-------------------------
99 Dodge 2500 Cummins (on WVO)
02 Jetta TDI )on WVO)
06 Jep Liberty CRD
Central ir in the house, installled by me. I love A/C.

graycenphil on Thu August 14, 2008 4:49 PM User is offlineView users profile

I changed the low pressure shrader valve fine (thanks Arizona Mobile for the parts and tool).

The Dodge dealer insists the high pressure service port is not available, and you have to buy the whole line. Is this possible, or can I get the port somewhere other than the dealer?

Thanks again.

-------------------------
99 Dodge 2500 Cummins (on WVO)
02 Jetta TDI )on WVO)
06 Jep Liberty CRD
Central ir in the house, installled by me. I love A/C.

mk378 on Thu August 14, 2008 4:59 PM User is offline

Some are completely welded on. Those will have to have screw-in valve cores though. Don't know if Dodge did that. If it's a ball valve type it must unscrew from the line because the ball wouldn't be able to withstand the heat of welding the fitting on.

Your truck is right from the time when they used those lemon evaporators. Everyone thinks that their service ports leak and it can be hard to tell because some dye will blow out every time the hose is removed. Also the plastic cap is supposed to be able to hold full pressure even if the shrader leaks. Usually the real leak is somewhere else.

graycenphil on Thu August 14, 2008 6:21 PM User is offlineView users profile

I don't see any dye around the drain from the evaporator; naturally I hope that is not leaking. I have heard it is a weak point on these vehicles.

I cleaned the high pressure port off well, and after running the A/C for a few hours it is pretty green, so I assume it must be leaking some.

It sure looks like it should unscrew, and looks like a ball in there, but Dodge insists they don't sell the part. Does anybody sell them aftermarket? I hate to use a junkyard part on that.

My other thought is to buy the whole line (I assume it must include the valve). An online Dodge place sells it for $42. It is the "liquid line" that I want, right? Then I can just swap the valve with mine.

Thanks again.

-------------------------
99 Dodge 2500 Cummins (on WVO)
02 Jetta TDI )on WVO)
06 Jep Liberty CRD
Central ir in the house, installled by me. I love A/C.

Edited: Thu August 14, 2008 at 6:32 PM by graycenphil

chris142 on Thu August 14, 2008 9:23 PM User is offline

Napa has the port you need. Take it off and give it to the counter clown. They are all the same. GM, Dodge, Ford, VW etc all use the same port. It's about $13. It unscrews out of the hex thats welded to the line. Many people try to unscrew the nut that welded to the line and rip it off.

TRB on Thu August 14, 2008 9:50 PM User is offlineView users profile

$ 13.00 dollars I need to rasie my price. Page two of this link.

http://www.ackits.com/c/Miscellaneous/Miscellaneous+Products.html

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When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com

HECAT on Fri August 15, 2008 9:58 AM User is offline

Too bad you cannot sell to NAP*, Uh.. the Big Box Auto Parts Stores; but your price is probably not low enough for them to make the 400-500% markup they need. Its probably very expensive to manage so many car care products, chrome accessories, air fresheners, seat covers, floor mats. Oh yeah, lets not forget about that little stash of imported car parts they keep behind the counter. The labor costs alone must be staggering; to have such competent and qualified professionals working behind the counter that can run out into the parking lot like a flash, pull codes, check A/C pressures, diagnose the problem with your car, and recommend a "can of this" to fix it.

"Counter Clown" now thats funny!

When I walk in, I tell them to turn their brains on, and they all instantly begin refreshing their screens (ha ha). Some of them have given up a long time ago, and will just turn the screen around and slide over the keypad for me to use. As much as I like to harass them about quality, knowledge, and my favorite "magic in a can" products; can't blame these guys, there just trying to make a buck being a clown.

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HECAT: www.hecatinc.com You support the Forum when you consider www.ackits.com for your a/c parts.

FLUSHING TECHNICAL PAPER vs2.pdf 

graycenphil on Fri August 15, 2008 11:43 AM User is offlineView users profile

The NAPA dealer near my home is pretty good. But I just went to the store near work and had no luck at all. First they wanted to sell me a set of gauges, then a shrader valve, then an R12 conversion kit. Maybe I just wasn't being clear.

Anyway, I just ordered one form you guys. Not your biggest sale of the day, but thanks just the same.

-------------------------
99 Dodge 2500 Cummins (on WVO)
02 Jetta TDI )on WVO)
06 Jep Liberty CRD
Central ir in the house, installled by me. I love A/C.

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