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2000 - Volume #24, Issue #6, Page #42
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"Oil Vac" Made From Milker Vacuum Pump

A used milker vacuum pump, belt-driven by an electric motor, makes a dandy "oil vacuum" for sucking oil out of engines, transmissions, and gearboxes, says John Rissler, New Enterprise, Pa.
  "It was cheap to build and helps keep my shop neat and clean," says Rissler.
  He bought the vacuum pump cheap from a local dairy farm and mounted it along with a new electric motor on a 10-gal. tank that oil drains into. The tank mounts on a steel frame outside Rissler's shop.
  Rissler drilled a hole in one end of the tank, then welded a pipe fitting into it. A 1/2-in. dia. plastic hose attaches to the fitting and runs inside the shop through the shop wall. There's a 2-ft. length of 1/4-in. dia. copper tubing that serves as a suction wand. To suck out oil, Rissler inserts the wand directly into the engine dipstick tube.
  The vacuum pump is also plumbed into the end of the tank to create suction. Once the tank is full, oil gravity-flows out a drain plug at one end of the tank and into a 55-gal. barrel for disposal.
  Rissler farms and also operates a business selling and servicing small engines and lawn mowers. "I use it to change engine and transmission oil and to remove excess oil when too much was added to an engine. It also works great for repriming hydrostatic transmissions. I just stick the tube into the return line and work the valve until the oil comes through.
  "I flip a switch inside the building to start the motor. It's a lot quicker than draining oil the conventional way and also much cleaner. I can make adjustments, sharpen blades, etc., while draining the oil without having to watch it all the time.
  "I paid about $100 for the motor and $55 for the vacuum pump. My total cost was less than $250. Commercial units on the market sell for $1,000 or more.
  "The small vacuum pump I used is no longer commonly used by dairies because most dairy operations now run more than three milkers. As a result you can buy them cheap."
  Contact: FARM SHOW Followup, John Aaron Rissler, 3409 Brumbaugh Rd., New Enterprise, Pa. 16664 (ph 814 766-2117).
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2000 - Volume #24, Issue #6