Astro Pneumatic Tool 7856 Universal Air Powered Cooling System Pressure Tester

I bought this just like it is an swapped out the hose from my snap on pressure tester an adapters onto this tool it works flawlessly no more bursting coolant from the bottle because you forgot tooo release the air pressure no more pumping I’m getting old I’m trying too save body a few steps for the future it quik faster then the traditional tester this a much better design an cheaper then buying the hole set .i do this on. Professional level it must have for the tool arsenal

Used it to test my 1994 Peterbilt 379 with a 3406E Cat. Had to get a radiator cap with the male fitting in the top to connect to. Worked great!

I bought this as an alternative to the Snap-On version that costs $281 before tax and I am glad I did, it is the same tool. Part of our preventive maintenance inspection at work is to pressurize the cooling system on Class 8 trucks and using a manual pump to pressurize these large systems is time consuming and tiring. This can pressurize them in seconds and you can regulate the pressure you want to pressurize them to. The pressure release button at the end of the hose is a nice feature because you can slowly release the pressure so you don't blow coolant all over the place. This tool will save you money, time, and hassle when testing cooling systems of any size. I do wish it had come with a case and an adapter for putting it on the tanks but it didn't so I bought a GM adapter (Astro 7858541) that had the fitting I needed for the quick connect and used the twist lock adapter off of my old manual tester with it.

Works great! I love having this it makes diagnosing cooling system leaks so much easier. Also saves a lot of time verse using the hand pump testers. Highly recommend. I have a Matco tools master cooling system tester and this works with it, Uses the same fitting.

This is so much easier for systems that have major leaks, you can easily search for them while the air compressor does the air control, only goes up so high in pressure due to the regulator, less then 30psi. Doesn't come with an air hose fitting atleast mine didn't. Great value and build quality, you can also change the hose end to another style if you don't have the quick attachment kinda. Other Amazon sellers have some great kits with quick attachments to go with this item.

Vacuums 3 gallon system to 20inhg in about 5 minutes. Would not go any lower, which is a little disappointing. Snap on goes to 25inhg. But it’s $650. So I will deal with it. It connects to other brands of adapters.

How come I have been manually pumping up cooling systems for all these years? I have a matco master cooling system tester at the shop and it works great but I saw this and figured i would give it a shot, sounds great right? Well shoot, none of my adapters are this quick connect style but I took the hose off of my manual pump and it threaded right into this unit. Forget about it, never going back to manual unit again. Takes about one second to build pressure it’s great! Works really good for help draining the cooling system also. Excellent product! Would highly recommend!

So nice to lift the car with steady pressure on the system

Sinceramente lo recomiendo muchísimo vale la pena, si mal no recuerdo dice el Manual que no debe de pasar de 100 psi el compresor, te ayuda bastante también puede drenar el anticongelante lo más que se puede, siempre y cuando no tenga una fuga grande, lo recomiendo yo lo compre el años pasado y es la fecha sigue

Connect one end to your cooling system. Plug in your air line, set the PSI to match the PSI on the cooling system you are working on and let it build pressure. If there is a leak this will find it quick instead of pumping the manual type cooling pressure tester for minutes at a time. Works great!

Good quality, great design and function

Very good Coolant Pressure Tester, fast and accurate. Would be nice to have a coolant cap adapter kit to go with it.

Works really well Had a problem with it leaking right out of the box where it connects. But took the quick connect apart and lubed the O rings up has be working leak free for a month now. I use this all the time as a truck and coach mechanic. It saves alot of time on those big systems