Pressure tank oil filler bmw transmission differential

Pressure tank oil filler bmw transmission differential
A quick way to fill your differential fluid in your car/truck. The pumps are slow and messy, hard to get in position, etc. I took a garden sprayer (that is meant to be pressurized) and converted it into a pressurized pump for differential and transmission fluid to work on cars.
I used a one gallon garden sprayer (Spectracide #27019 at Lowes (about $13USD)), added a chuck to use a compressor to pressurize it (optional (note do NOT use over 20PSI)). A 90 degree 1/4 turn water valve ($4USD) with a 3/8" compression fitting on one side and a 3/8" hose fitting on the other side. Removed the sprayer valve, and replaced it with the water valve, added the tire valve and it works great (and it was much easier than I thought it would be).
Throughput is about 1 liter / minute.
I have not found a commercial tool that does this for civilian use. I put a 2" piece of 3/8" clear tubing ($0.25/ft) over the hose fitting side of the valve just for a little extra reach (I needed a 6" piece for the front diff) adjust to your own needs. And a hose clamp on the hose end for security ($0.50USD).
 
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Step 1Add the tire valve

Add the tire valve
Add the tire valve to the tank, drill a 29/64" hole in a flat spot on the top rim of the tank.
Make sure the edge of the gasket will fit up through the hole for a good seal.
You might need a rat tail file to clean up the hole.
These are the 0.45" (to 0.625) valves at Napa and Advanced Auto Parts.
I guess you could use a 1/2" drill bit, but I liked the tight fit of the 29/64" bit.
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3 comments
Mar 10, 2010. 7:56 AMoakironworker says:
Thanks this a great idea and write up
Greg
Jul 8, 2009. 3:00 PMJohn Kiniston says:
I made a brake bleeder out of one of these bottles last year, I adapted a spare cap to my brake reservoir to the end of the sprayer using a couple plumbing fittings so I could pressure-fill the brake system on my Volvo 240.
Jul 3, 2009. 9:47 PMikssk says:
This is so cool, to bad i don't work on cars anymore.

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Author:janfiu