AC Shrader Valve Core Removal/Installer Kit without removing r134a?

[sev]

So I got the r134a Shrader valve core kit and the Mastercool 58490 valve core remover/installer kit. Im suspecting a slow leak on my high pressure service port. The Mastercool kit is the one that you can use to pull the valve cores and replace it without removing the refrigerant in the system.

It took a few tries. At first i could unscrew the valve, but it woudnt't come up through the kit as the tool wouldnt grab it. So I screwed the shrader valve back into place. This happened a total of 5-6 times.


I after tightening up the tool a bit, i managed to grab the shrader valve after being unscrewed under pressure (a little scary). I was able to undo the valve and pull it up through the tool, but of course my luck, the high side valve core is too long, and when you go to use the shut off ball valve, the shrader valve is too long will not clear the ball valve and allow it to close.

This is the step im talking about

So I had to just give up and screw the old high side shrader valve into place. Im worried the ball valve closing and hitting the seal of the old shrader valve might not make it happy.

Quite frustrating, after 5-6 total tries unscrewing the shrader valve on the high side and screwing it back in after failed attempts. I realize the Mastercool kit just wont work with the high side service port on our cars. The shrader valve is too long and the space between the grabber tool and the ball valve is too short.

Has anyone ever successfully used a shrader valve remover kit with the e46? Is there another brand of tool that works?

[jayjaya29]

Hmm would this work? I have no experience with this tool, just came across it.

https://www.fieldpiece.com/product/vc2g-valve-core-removal-tool-with-dual-ball-valves-and-sight-glass/

[sapote]

1. Im suspecting a slow leak on my high pressure service port
2. the high side valve core is too long, and when you go to use the shut off ball valve, the shrader valve is too long will not clear the ball valve and allow it to close.

1. I would use soapy water to check for the buble on the port leaking before replacing the core.
2. From the pic below, the box has a few different length adapters for the purpose. The red line 'A' points to the long adapter to add between the ball valve and the core removal shaft and this should give more room for the valve core to clear the ball valve. I also might back out the nuts 'B' a little just before leaking to gain more space and this could give enough space to clear the valve core off the ball valve.

Which pieces of the tool in the pic that you put together for the removal job?



Btw, I suggest to add the little NylogB lue on the shaft and the o-rings for better seal of the tool:
https://www.amazon.com/Refrigeration-Technologies-RT201B-Sealant-RT201BP/dp/B0C294BCPK/ref=sr_1_1?crid=23L0S94K6Z9FL&dib=eyJ2IjoiMSJ9.0ir sngFXayT5_G-jJYn0kTIOBri3S4i-SovwoRapyjr3OAyH9mfcx44yIlOclh66CO71CKbmdJoPVlAAaI qtv14MEQbDqyQyupt-y0mefvQ.bTLJNr_VOtNrlzMa0gKCHaVnu3XWjc4uUtqseubiAR 8&dib_tag=se&keywords=nylog+blue&qid=1723620256& s= automotive&sprefix=nylog+%2Cautomotive%2C134&sr=1-1

One more: before fully open the ball valve, you should crack open the nut 'B' while opening the ball valve to purge the air out of the tool and inside the valve to avoid trapped air migrating inside the system, during both removal and install the core valve.

[sev]

1. I would use soapy water to check for the buble on the port leaking before replacing the core.
2. From the pic below, the box has a few different length adapters for the purpose. The red line 'A' points to the long adapter to add between the ball valve and the core removal shaft and this should give more room for the valve core to clear the ball valve. I also might back out the nuts 'B' a little just before leaking to gain more space and this could give enough space to clear the valve core off the ball valve.

Which pieces of the tool in the pic that you put together for the removal job?



Btw, I suggest to add the little NylogB lue on the shaft and the o-rings for better seal of the tool:
https://www.amazon.com/Refrigeration-Technologies-RT201B-Sealant-RT201BP/dp/B0C294BCPK/ref=sr_1_1?crid=23L0S94K6Z9FL&dib=eyJ2IjoiMSJ9.0ir sngFXayT5_G-jJYn0kTIOBri3S4i-SovwoRapyjr3OAyH9mfcx44yIlOclh66CO71CKbmdJoPVlAAaI qtv14MEQbDqyQyupt-y0mefvQ.bTLJNr_VOtNrlzMa0gKCHaVnu3XWjc4uUtqseubiAR 8&dib_tag=se&keywords=nylog+blue&qid=1723620256& s= automotive&sprefix=nylog+%2Cautomotive%2C134&sr=1-1

One more: before fully open the ball valve, you should crack open the nut 'B' while opening the ball valve to purge the air out of the tool and inside the valve to avoid trapped air migrating inside the system, during both removal and install the core valve.

Two of the adaptors fit the high side, both are too long and wont allow the shrader valve to come up without interfering with the ball valve. IIRC, it was #2 and #4 (stamped on them).

The part you have labeled as A is not an extender but an adaptor that fits on the bottom for GM/Ford applications. Its too narrow and will not fit the top part, so its not an extension

[sapote]

Two of the adaptors fit the high side, both are too long and wont allow the shrader valve to come up without interfering with the ball valve. IIRC, it was #2 and #4 (stamped on them).

Do you think everyone here own one of these sets? I don't have one to look at the fine number stamped on them, and can't see the number from pics. Point to the pic please, or post the link to the parts.

I assume you added the two adaptors in between the ball valve and the core removal shaft with parts 'B'?

If you add an adaptor (extender) on top of the ball valve then this should gives more space to pull the core far enough to clear the ball valve for you to close the valve. Why this doesn't work?
I think it's not the space problem, but the groove on the shaft is not tight enough and the valve core fell off when it was pulled to the ball section.
You can try to verify this with your new valve core and the tool outside to see: Try to insert it in instead of pull it out, and after the part 'B' is threaded to the ball valve, can you close the valve with no interference by the core attached on the shaft?

In fact, a measurement should prove if the chamber is long enough for the core to clear the ball valve.

[sev]

Do you think everyone here own one of these sets? I don't have one to look at the fine number stamped on them, and can't see the number from pics. Point to the pic please, or post the link to the parts.

I assume you added the two adaptors in between the ball valve and the core removal shaft with parts 'B'?

If you add an adaptor (extender) on top of the ball valve then this should gives more space to pull the core far enough to clear the ball valve for you to close the valve. Why this doesn't work?
I think it's not the space problem, but the groove on the shaft is not tight enough and the valve core fell off when it was pulled to the ball section.
You can try to verify this with your new valve core and the tool outside to see: Try to insert it in instead of pull it out, and after the part 'B' is threaded to the ball valve, can you close the valve with no interference by the core attached on the shaft?

In fact, a measurement should prove if the chamber is long enough for the core to clear the ball valve.

Do you think you're providing any help? Because your'e not. You're asking questions I already answered what you're asking if you read a little closer.

My question isn't about this kit. I have the kit and mentioned this kit wont work with the included parts. The problem is the body that the ball valve is in is too short. It doesn't matter which of the stems I use. Two fit the valve and two don't. The original problem was the groove on the shaft wasnt tight enough as you mentioned and the shrader valve fell back down, but I fixed that and Im able to pull the shrader valve all the way up, but I cant close the ball valve, because the shrader valve does not clear it.

Back to the stems...The two that fit, allow the shrader valve to be pulled up but the shrader valve is too long to clear the ball valve, so you can't close the ball valve to extract it. There is no adaptor in the kit that extends the length of the ball valve core as you mention.

I took a spare shrader valve, dropped it in the ball valve housing with the ball valve closed and tried to screw on a stem and it wont fit.

There is no extender to add as included in the kit. The part you think is an extender is not, its an adaptor to fit over a service port of some sort. It doesnt even screw on to the top of the housing where you extract the shrader valve.

My question is there another valve core tool that works? Has anyone does this?

I appreciate you trying to help.

[sapote]

Do you valve core look the same as ones pointed by the red line?
If yes then this $24 tool should work.

https://www.amazon.com/Remover-Installer-Pressure-Refrigerant-Conditioner/dp/B0CBVBVZ48/ref=asc_df_B0CBVBVZ48/?tag=hyprod-20&linkCode=df0&hvadid=693319229662&hvpos=&hvnetw=g&hvrand=4684006230544419425&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9031191&hvtargid=pla-2202966436281&psc=1&mcid=dc9c9acd3bc03b2c98835f1e416e03e3&gad_source=1

[sapote]

Do you think you're providing any help?

Did you try the new valve core in the tool to see if it clears the ball valve, outside the car?

[sev]

Do you valve core look the same as ones pointed by the red line?
If yes then this $24 tool should work.
https://www.amazon.com/Remover-Installer-Pressure-Refrigerant-Conditioner/dp/B0CBVBVZ48/ref=asc_df_B0CBVBVZ48/?tag=hyprod-20&linkCode=df0&hvadid=693319229662&hvpos=&hvnetw = g&hvrand=4684006230544419425&hvpone=&hvptwo=&hvq mt =&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9031191&h vt argid=pla-2202966436281&psc=1&mcid=dc9c9acd3bc03b2c98835f1e4 16e03e3&gad_source=1

No, the one you have the red line next to is the valve for the low side, that works fine in the master cool kit, its shorter.

The high side port has a much longer schrader valve. here's a pic





Left one is the high side, right one is the low side. Note the difference in length

[sev]

Did you try the new valve core in the tool to see if it clears the ball valve, outside the car?

I sure did. Before I made the post.


Here's what I typed in the original post in a crappy video I took after having too many beers. for anyone else trying to follow this:

https://youtu.be/3rW9rTPySPE?si=ZxPmEpdBHFnlJSba

and part 2:

https://youtu.be/eMj3KfN48sg?si=kTra9YRkkGXE8y7L

[sapote]

OK, I just watched your video about the problem.
If your valve core is 0.75" long then the core removal tool I used for my Mini Split should work, and here is one sample:

https://www.amazon.com/WADEO-Remover-Installer-Teflon-Compatible/dp/B08FBVYD28/ref=sr_1_3?crid=263KX8E9HKN3K&dib=eyJ2IjoiMSJ9.NlD SES3ks2NibdT-VLIG2R3dh6hxDHj1XrV3K6m3PpyqHJQtIVcNu89S7RAH0NvJxS wgjFp3X5b_jR80BrVWR1ZspACFRPWiJty4Wk_W5aoaeodp_pyk FQFImsyuSsAAQ8MkxS3U4geWL4SWVt7_urdnMHWtxBJOo6D8nc ZeR51e8SuADTNb7TFrR3Wj02wHwJMNZZLF_hJG0ij-TEwizAwDC68BZou2jrIDRkj5Q0ogT-I6rSVswe5lPol4tDD9TlWEKb3b-vNW822LhH1viF5sQa1SkavEoixh34QCNm8.kWjpZl3fzK5wf9J IdyNUc70EO26AdkKjhGzd4M1X0KE&dib_tag=se&keywords=4 10a%2Bvalve%2Bcore%2Bremover&qid=1723702686&sprefi x=410a%2Bvalve%2Bco%2Caps%2C125&sr=8-3&th=1

[sev]

OK, I just watched your video about the problem.
If your valve core is 0.75" long then the core removal tool I used for my Mini Split should work, and here is one sample:

https://www.amazon.com/WADEO-Remover-Installer-Teflon-Compatible/dp/B08FBVYD28/ref=sr_1_3?crid=263KX8E9HKN3K&dib=eyJ2IjoiMSJ9.NlD SES3ks2NibdT-VLIG2R3dh6hxDHj1XrV3K6m3PpyqHJQtIVcNu89S7RAH0NvJxS wgjFp3X5b_jR80BrVWR1ZspACFRPWiJty4Wk_W5aoaeodp_pyk FQFImsyuSsAAQ8MkxS3U4geWL4SWVt7_urdnMHWtxBJOo6D8nc ZeR51e8SuADTNb7TFrR3Wj02wHwJMNZZLF_hJG0ij-TEwizAwDC68BZou2jrIDRkj5Q0ogT-I6rSVswe5lPol4tDD9TlWEKb3b-vNW822LhH1viF5sQa1SkavEoixh34QCNm8.kWjpZl3fzK5wf9J IdyNUc70EO26AdkKjhGzd4M1X0KE&dib_tag=se&keywords=4 10a%2Bvalve%2Bcore%2Bremover&qid=1723702686&sprefi x=410a%2Bvalve%2Bco%2Caps%2C125&sr=8-3&th=1

interesting. Wonder If i could fit the quick disconnect for the high side on there?


I dunno if its worth trying or if I should throw in the towel and just pay a shop to handle it

[sapote]

interesting. Wonder If i could fit the quick disconnect for the high side on there?


I dunno if its worth trying or if I should throw in the towel and just pay a shop to handle it

Length of your valve core?