Ninja tips: AC systems |
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Ninja tips: AC systems |
technicalninja |
Mar 24 2023, 07:32 AM
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#1
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Senior Member Group: Members Posts: 1,290 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region |
This thread is my base AC thread for suggestions, questions, whatever...
I run https://granburyautoac.com/ I specialize in automotive heat and air conditioning systems. I've been doing AC work since 1983 and have seen all of the changes, good and bad, that have occurred over the last 40 years. I'm keeping the first post short as they always show up at the top of each page and if long, they clutter up the thread... |
technicalninja |
Mar 24 2023, 08:05 AM
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#2
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Senior Member Group: Members Posts: 1,290 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region |
2nd stupid important tip.
Change the service valves every single time you evac and charge a system. The little valves will seal perfectly for 10+ years the very first time they are used. If they are only 6 months old they might seal a second time. If they are 2 years old or older they will not and all of your refrigerant will leak out slowly over time. The service valves are the single most common leak on ANY system. Originally, they were Shrader valves, but they were not normal tire valves. The material that the seals are made out of was higher quality and can seal at much higher pressures than a standard tire valve. If you have a motorhome that has 100psi tires on it the AC valves are the way to go... There are many styles of valves now. Make sure you're getting the right ones. Some KIA/Hyundia valves are slightly different than the normal JIS valves and swapping them damages the valve seats. I ran out of the KIA valves once. Both the Kia and Hyundia dealers didn't have the correct valves and didn't knpw they were different! I re-used the customer's valves and had to re-do the evac and charge 9 months down the road as the 4-year-old original valves didn't seal properly. I ate the job and didn't charge the customer again. Full blown come back! I believe I am the only shop in town that would have done that... These valves are cheap, replace them every time... Stop the job if you don't have the right parts or you will get additional training! |
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