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Old 02-21-2011, 12:58 AM   #1
95F1504x4EB
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Need a reference picture for a 1995 a/c high pressure port, please.

Like the title says, can someone post up a picture of the inside of a 1995 factory high pressure a/c port?

I was under the hood today checking things, and I kept hearing an intermittent slight hissing noise. I finally traced it down to the high pressure port. I could feel the refrigerant escaping through the cap which must have been cracked because as soon as I tried to tighten it; it broke in my hand and refrigerant was now spewing out forcefully. I put my hand down over the port and held on while I had my brother run and grab the high pressure hose from my manifold gauge set. I snapped the fitting on quickly and only lost a slight amount of refrigerant.

Now I am thinking to myself how the F was the valve leaking anyway. I grabbed one of my picks and decided that I was going to use it and somehow close the valve when I take the hose back off. When I snapped the hose fitting off I was expecting refrigerant to come rushing back out, but it did not... the valve seemed to be holding now.

I used my pick to feel around inside the high pressure port, and I found that there is no visible schrader valve but a rubber ball looking thing. Any other R134a system that I have worked on had large schrader valve stems on the high and low ports of the system (my low side has the valve stem). Then I started thinking that maybe something broke off from inside the old cap and was now lodged on top of the valve stem, holding it slightly open at times.

I put the hose fitting back on to make sure I don't lose any more refrigerant, but I just don't know why the valve won't hold on its own, unless it's worn out or something.

I appreciate the help.
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Old 02-24-2011, 06:49 PM   #2
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Bump. Anybody?
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Old 02-24-2011, 09:35 PM   #3
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Where is this high pressure port you are talking about? you want a pic of the back of the AC compressor?
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Old 02-24-2011, 10:19 PM   #4
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Thanks Shadofax.

I am talking about the port where you hook up the red hose of the manifold gauge set. It's in the line from the compressor to the condenser.
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Old 02-25-2011, 01:30 AM   #5
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here's what I have in my 95, looks the same as what you described

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Old 02-25-2011, 01:51 AM   #6
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Not sure which is high presuure and which is low pressure, but here are the two AC Ports on my 1990.


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Old 02-25-2011, 11:38 AM   #7
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yo,

The A/C service port fittings used in R-134a refrigerant systems are a two-piece design. The top portion of the fitting is aluminum and is threaded to the bottom part and sealed with an O-ring seal. These fittings can be serviced through the use of either the High Side A/C Fitting Socket D94L-19703-A or the Low Side A/C Fitting Socket D94L-19703-B providing the system is first discharged. Refer to Section 12-00 for discharging procedures. The valve seal is an integral part of the aluminum fitting piece which must be replaced if the seal leaks. The Schrader valve core used on R-12 systems is not used in the R-134a system.
The high-side fitting is the largest and special adapters are required to attach service equipment to both the high- and low-side system ports.
Rotunda R-134a High-Side Quick Disconnect 176-R0037 or equivalent.
Rotunda R-134a Low-Side Quick Disconnect 176-R0036 or equivalent.
Rotunda R-134a Manifold Gauge Set 176-R032A or equivalent.
Always reinstall the A/C charging valve caps (19D702) on the service access gauge port valves after servicing the A/C system to prevent dirt from entering the valve or refrigerant system.
High-Side Service Port
http://www.thedieselstop.com/faq/949...ges/m5306a.gif

For New Valve/Cap PN
see
Air Conditioning Parts Catalog, Bronco & all Fords w/Ford Part Numbers & Illustrations 108MB PDF Source: by fordinstallersupport.com AT http://www.fordinstallersupport.com/...logs/ac200.pdf

See page 189
CAP ASSY. (CHARGE VALVE) — Cont’d
1999 F150; (High Side) ............................ YF-2038
F150; (Low Side located on Accum) YF-2441
F Series, F-250 Pickup; U/8500#
GVW ............................................... YF-2441
F250/550SD; Series (Low Side #1) YF-2089(2)
F250/550SD; Series (Low Side #2) YF-2441(2)
F250/550SD; Series (High Side #1) YF-2038(2)
F250/550SD; Series (High Side #2) YF-2442(2)
1998 F150/250; U/8500 GVW ................. YF-2038
1997 F150/250; U/8500 GVW ................. YF-2038
F250/350; o/8500 GVW, Low Side YF-2122
F250/350; o/8500 GVW, High Side YF-1803
1996-94 Low Side . YF-2122
High Side YF-1803 See page 283 for a pic & use on other Fords and years


1993-81 All From 10/80 ............................... YF-970
1981 All Before 10/80 ............................. NA
1979-72 w/Factory Air ................................. YF-880

CHARGING VALVE (CORE ASSY.)
See page 289 for a pic & use on other Fords and years
------

Motorcraft YF1803 Motorcraft A/C System Valve Core and Cap Kit $3.39 - RockAuto.com
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Old 02-27-2011, 04:55 PM   #8
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Thanks for all the help and the informative links!!!

I am thinking that someone has replaced some stuff on my truck before because I have a schrader valve on the low side, unlike slim724's system:



I wish I had a schrader valve on the high side to get rid of that rubber ball POS.



This is how I am keeping the system from leaking out all the refrigerant until I can get a new cap.(so ghetto)

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Old 02-27-2011, 05:30 PM   #9
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yo, That's a great way to save the refrigerant and your $!
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Old 04-12-2011, 11:09 PM   #10
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Bronco Info: 1995, F150, MAF 5.0L, 4R70W, BW 1356, 3.31 gears, 31x10.50s, Eddie Bauer Edition
Well it turns out my little ghetto setup did not hold the refrigerant in like I had hoped so now I am looking for new a new high pressure valve to replace mine.

miesk5, I got a new cap (YF1803) and a new charging valve (YF2090) per the part numbers on page 189 of the link you provided. The cap fits on the fitting perfectly, but the new valve is not similar to the old one. I don't think there will be anyway to put the new valve in the old fitting once I take it off.

I haven't been able to find any place that sells just the charging port, you have to buy the whole hose assembly. Does anyone know where to find just the replacement charging port?

I did find one website that sells all kinds of a/c parts: http://www.rossairworks.com/
On the bottom of the last page of this catalogue I found a part (2899026) that "may" work, but I don't know:
http://www.rossairworks.com/images/s...t_adapters.pdf

New valve I bought (YF2090):
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Old 04-13-2011, 09:30 AM   #11
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yo,

I don't know why the Ford MC cat is wrong.
go to your local Ford dealer Parts dept to show them what you have bought and ask them to print out the parts illustration


I tried 4Seasons on line cat

but it just shows the package
http://www.4s.com/Online%20Catalogs-...g/Content.aspx
Their Cross Refernce Search for YF2090
Shows:
Part Number: 59347
High Flow JRA Service Port Valve Core
Description; For R134a Service Ports. Has neoprene seal for R134a usage
same pic as the MC unit you posted

So, looking at my 96's Serv Manual again...

The A/C service port fittings used in R-134a refrigerant systems are a two-piece design. The top portion of the fitting is aluminum and is threaded to the bottom part and sealed with an O-ring seal. These fittings can be serviced through the use of either the High Side A/C Fitting Socket D94L-19703-A or the Low Side A/C Fitting Socket D94L-19703-B providing the system is first discharged. Refer to Section 12-00 for discharging procedures. The valve seal is an integral part of the aluminum fitting piece which must be replaced if the seal leaks. The Schrader valve core used on R-12 systems is not used in the R-134a system.

The high-side fitting is the largest and special adapters are required to attach service equipment to both the high- and low-side system ports.

Rotunda R-134a High-Side Quick Disconnect 176-R0037 or equivalent.
Rotunda R-134a Low-Side Quick Disconnect 176-R0036 or equivalent.
Rotunda R-134a Manifold Gauge Set 176-R032A or equivalent.
Always reinstall the A/C charging valve caps (19D702) on the service access gauge port valves after servicing the A/C system to prevent dirt from entering the valve or refrigerant system.


I don't see anything on replacing high or low valves other than that.


I'll look at the manual again in a few..will bbl
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Old 04-13-2011, 12:38 PM   #12
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Thanks, miesk5

I typed in that Kysor part # 2899026 (that I got from a site last night) in the 4 Seasons cross reference field, and it turned up 4 Seasons part # 59946.

That "looks" like the fitting I need. Maybe I can contact 4 Seasons and ask them now.

From what I remember reading about the Kysor part last night, it contains a schrader type valve rather than the rubber ball thing.

Again, thanks for your help!!!
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Old 04-14-2011, 07:44 PM   #13
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It turns out the local Advance Auto Parts had the part so I went down and picked it up after work. ~$5



Looks like I will not be getting rid of the rubber ball anytime soon.


Backside of the rubber valve:


I will probably replace the black o-ring with a green one because it looks like regular rubber and not HNBR. I also got a bottle of PAG 46 because a little leaked out so I'll add a little.

I am gonna try and get the system pulled down and charged back up this weekend. Will post the updates.
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Old 04-15-2011, 09:28 AM   #14
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yo,
wow! Good job!

I still can't figure out both Ford's MC On-line catalog and the official MC parts look-up site is incorrect; I'll try and send them a message about this soon!

on da O ring;
Air Conditioning - O-Ring Removal From Spring Lock Coupler - Service Tip Article No. 95-2-2
ISSUE Some technicians may use small screwdrivers to remove O-rings from spring lock coupling fittings. This practice can and has resulted in scratches across the O-ring grooves in the fittings. Loss of refrigerant charge in the system may result.
ACTION It is recommended that a plastic toothpick, or equivalent tool, be used to remove O-rings. Refer to Figure 1. Do not use the metal O-Ring Tool (T71P-19703-C). Only plastic O-Ring Tool (F5VH-17B017-AA) is approved for O-ring removal.

I like how those guys n' gals @ Ford can get dn to da nitty-gritty, but change parts in a wink.

@ diff sets of hands I guess?
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Old 04-18-2011, 08:19 PM   #15
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Well, I learned something else this weekend.

The YF2090 that is supposed to fit the high side port actually fits my low side port.

Prior to this I had my dealer order me a YF2198 valve which is supposed to fit the low side, and obviously was not going to work with anything on my truck. It looks just like a schrader valve in a from a tire stem, and it's going back to Ford ($8).

I put the new valves on the truck, replaced all of the HNBR o-rings throughout the system (execpt for the two large ones on the back of the compresor-I'll have to find that size), added a splash of PAG 46 oil, and will be ready to recharge this weekend. I WIN!
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Old 04-19-2011, 01:35 AM   #16
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Both the high and low ports in my 95 are the check ball type, I wonde how you ended up with 1 schrader style valve?
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Old 04-19-2011, 06:49 AM   #17
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Quote:
Originally Posted by slim724 View Post
Both the high and low ports in my 95 are the check ball type, I wonde how you ended up with 1 schrader style valve?
A Prev owner or shop did it with what they had on-hand.
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