Vacuum Transducer To Hold Fluids In Tank

Best Practices for Vacuum Transducer To Hold Fluids In Tank

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I use a solvent blow gun. Connect the suction line to the hyd reservoir and use a wire tie to hold the trigger open....... word of caution using this method. Dont open the trigger to wide or you will start pulling oil from the tank.I have used my A/C vacume pump and have also used a shop vac.

I use a coolant air lift. It provides plenty of vacuum in the tank and all i had to do was make a bigger cone out of a rubber bushing to compansate for some of the bigger tank openings

I made mine with an old cap i drilled and tapped and some tubing welded together to make a venturi. A ball valve regulated the air flow.

Cat sells the transducer, i have the part number in my toolbox. I could get it for you tomorrow. We have a nice set up in our tool room at work but it would take a little work to get one set up but in my opinion it will be well worth it. Once you have the transducer you need an air regulator and a spare cap for what ever tank your making the repair on. The transducer has pipe threads on it and has three ports; plus, minus and plus+minus. So you connect the spare cap to the minus port of the transducer with a small piece of pipe. ( iam not sure what size pipe it is i would guess around 3/8"). then you connect the regulator to the transducer plus port. Attach whenever size air chuck you us on the other side of the regulator. and the plus minus side is the vent. Screw the cap on the tank and crank the regulator to about 30psi. if oil starts spraying out then there is too much of a vacuum. Hope this helps, Let me know if this is hard to follow.

OK, talked to one of the Cat field mechs, Cat part # 5P0306. The 623's have a relief valve on top of the hyd tank, I could probably remove it and adapt the transducer there instead of an extra cap. Thanks for the help, paranoid about making a mess anymore

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motrack said:I use a solvent blow gun. Connect the suction line to the hyd reservoir and use a wire tie to hold the trigger open....... word of caution using this method. Dont open the trigger to wide or you will start pulling oil from the tank.I have used my A/C vacume pump and have also used a shop vac.Click to expand...Does that actually work using a a/c vac pump

Yes depending on how big of a hole you’re planning on making. Small hydraulic line should have minimal spill. Taking the main line from the tank to the pumps, won’t help much.

Frank Brothers said:Does that actually work using a a/c vac pumpClick to expand...Yes it does work well with in reason , use often on cooling system with shop vac for changing frost plug heater, fuel tanks ectPic is changing a valve on bottom of full fuel tank recycled freon tank is protect the pump from any fuel sucked up

We had a guy setup a shop vac. Was all proud of the time savings till someone tripped on the extension cord and it unplugged.Whoops!

I use the Caterpillar one. Keep in mind, you will need to regulate the air flow to the transducer, or you can drain the reservoir right out the exhaust port like a fountain.Also you can support Bezos by purchasing the same thing from Amazon for less than $15. I’ve been purchasing the TCV-15HS. Lots of Chinese companies use the same part number. I use them for pulling down large transport tankers for the EPA method 27.​

I just bought the caterpillar one but not from cat. It is made by air-vac and the part number is TD260M. Considerably less money. I’ve also used the horrible freight vacuum pumps with some success but I tend to break the flimsy plastic case they are in.

I use the cat ones at work with a large air muffler on it to keep the noise down. At home I tore apart a HF air operated vacuum pump (for a/c) for the Venturi in it. It just had 1/8” pipe thread fittings in it and no threads to attach a muffler on it. For $15 it works great.

I have a Fox Venturi Products Eductor, Part # 611210-060 from the USA that I purchased 30 years ago for about $100 Canadian back then.Have done some jobs that without would of needed 100 Bags of floor dry but lost only a cup or two.Well built and would buy again. Made of quality brass.Simon C

I use the cat one as well. Just priced one a couple of months ago and they want like $225 for them now. I also have one from harbor freight that works ok for the money

Acecadet said:I use the cat ones at work with a large air muffler on it to keep the noise down. At home I tore apart a HF air operated vacuum pump (for a/c) for the Venturi in it. It just had 1/8” pipe thread fittings in it and no threads to attach a muffler on it. For $15 it works great.Click to expand...I threw a brand new one out this summer, had it for 15+ years and never used it. Go figure, a use for it.

Zewnten said:Yes depending on how big of a hole you’re planning on making. Small hydraulic line should have minimal spill. Taking the main line from the tank to the pumps, won’t help much.Click to expand...Cat use to sell shims that resemble lollipop or blocking plate that you put over ports while. Worked good

some cat part numbers5P-0306 - transducer308-6636 - expanding plug

hoganhopper said:Cat use to sell shims that resemble lollipop or blocking plate that you put over ports while. Worked goodClick to expand...They still sell them but a plasma cutter or torch can make them a lot cheaper haha

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