Connect the manifold gauge set as discussed above. Connect the yellow hose to the can tap valve and windshield replacement seat (turn clockwise) the valve. Close the blue gauge on the manifold gauge set. Open the valve on the can tap valve. Slowly open the valve on the blue or "low-side" gauge and let the refrigerant flow from the refrigerant can into the system until you see a reading of 60psi on the "low-side" gauge. TIP: Placing the refrigerant can in a pan of hot water will allow the vapor refrigerant to enter the A/C system quicker. WARNING: Do not invert the refrigerant can. Doing so will allow liquid refrigerant to enter the system resulting in a ruined compressor.
If the crack looks exactly the same when completed, it's very likely the technician didn't inject the resin properly. A properly completed repair with cause each area of the damage to disappear from at least from one angle of vision (ex: looking from one side, looking from below, looking from above, etc.).
If the crack is small, then we can still fix them. Those hairline cracks and small holes are easy to fix. The car owner will only spend a minimal amount when they fix them. This will save them more money that they can use for other purposes. To change the entire windshield can cost a week's allowance. In this case, it is wise to invest in quick-fix solutions for small cracks and holes for the car windshield. When we buy windshield repair kits today, it comes with an instruction guide that is easy to follow. It also comes with tools that are necessary in fixing the crack or holes. Quick repair kits and solutions are available in any department store and local auto shops.
Since the windshield is a safety precaution and a major area of your car it will need to be in excellent conditions. If you ever plan to sell or trade in your vehicle you will not get a full value or may even lose a sale if the windshield is not in good condition. It is not safe and it definitely does not fix auto glass repair look good!
Your windshield is what protects you and your passengers from any debris from the road that could come into your vehicle and harm you. For example some things that may hit your windshield are rocks, trash, cigarette butts, and other things that hit your windshield. It is important to keep your windshield in good condition so it can do its job and protect you. If you windshield is cracked, chipped or broken in any other such way it will not be able to do its job. Also it can actually significantly decrease your safety. Having a broken, chipped or cracked windshield can make it easier for debris to come through your windshield and actually send the glass flying your way as well.
Because both rear door windows were inoperable, I assumed that there must have been some other electrical glitch, such as a bad control module. Well, you know what they say about assuming. I did a little internet research and found that the General Module controlled the locks and windows and that sometimes, the relays go bad and need replacing. I found some relays for the General Module and ordered them for $75. They arrived a few days later.
I want to congratulate you on your decision to start a windshield repair business. It can be a fun journey and profitable experience with the right guidance.