This is a pneumatic operated coolant filler. I use it every time I fill a vehicle with coolant. It is one of those tools not many people know of, but need to! It will suck all the air from the coolant system and replace it with coolant. Meaning no more pesky air bubbles that you have to burp after repairs or leaks!
Many different companies offer this product, you will definitely get what you pay for with this item. I have found the cheaper versions of this kit will do well for the DIY person. If you are working on vehicles often you will want to invest in a decent one with a warranty. The seals where the attachments go tend to leak on the cheaper versions after time. It is also important to find one that has the screen attachment at the end of the pickup tube. (shown in picture) It will prevent all debris from getting sucked back into the system while filling.
“This tool is a coolant filler tool, but I use it in two different ways! “
Usage 1: Filling
- While the coolant system is empty, you will first locate the proper attachment to fit the vehicle you are working on. Some kits will come with a universal fitting attached, to allow for you to simply just firmly press it into the coolant cap without having to worry about finding the proper attachment.
- Set up and attach the coolant filler to the vehicle.
- Direct the clear tube without the screen into a drain pan.
- Direct the other clear tube with the screen deep to the bottom of your new coolant your wanting to use.
It is always best to keep the drain pan low, and the new coolant as high as you can. That way gravity will work in your favor when you begin to fill.
- Be sure to shut all valves on the filler tool to begin.
- Connect your air hose to the filler tool.
- Slowly open the valve next to the air hose first. This should now start to create a vacuum in the coolant system. It is ok to leave the valve all the way open and allow the machine to draw a vacuum for at least 5-10 minutes. Most systems will allow you to achieve around 25 vacuum.
- Once your gauge has stopped around 25 vacuum for at least 5-10 minutes, you can shut the valve off. This will now initiate the leak down test. You will want to now leave both valve turned off for at least 5-10 minutes. This will test the system for leaks. If the vacuum gauge drops at all during this time it is a good indicator you have a leak somewhere in the system. (not all leaks will be noticeable under a vacuum, if you are suspicious of a leak it is always recommended to pressure test the system as well.
- Fill. You now make sure your hose with the screen at the end is completely submerged in coolant. Then turn the other valve connected to that fill tube. Coolant will begin to rush from coolant container into vehicle. Be sure to monitor the coolant container to make sure it doesn’t go dry during this process. If it gets low you can shut the valve swap the hose to another container with more coolant and open the valve to continue. Do this until the vacuum gauge reads zero.
- Test. The system should be completely full and have no air pockets in the system. It is always best to start the vehicle with the heater on and let it completely warm up still to insure all air burps from system. Then check coolant level again.
Usage 2: Repairs
Filling coolant systems with this tool makes it hassle free. Another amazing thing it allows for is small repairs without having to drain the system!
Just attach the tool to the coolant neck while the vehicle still has coolant. And leave the air valve open, allowing it to draw a vacuum, you will be able to replace various coolant sensors or heaters without spilling a drop!
Highly suggest this tool to any mechanic out there. Thanks for reading.