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Will be installing a Mitsubishi 24K mini split soon. I plan to hook it up with a prefab line set, (so no need to change the refrigerant charge or flare the lines) but don't know what tools to get to purge/evacuate the lines. I have a Yellow Jacket R410A gauge/manifold set, a 3CFM vacuum pump...

After rebuilding two Champion R15B pumps over the past two years I felt it was time to share what I learned, in the hope that I can save others some time and effort. Basics: The Champion R15B pump is a two-cylinder, two-stage, splash lubricated design, utilizing a cast iron crankcase and a cast...

Guys, this one has me stumped. I've rebuilt my fair share of Champion air compressor pumps, but have never seen anything like this. Was told it came from a building that was torn down. The model number on the tank is HR3-6, so it should have had an R15B pump... except it didn't. The pump in...

Picked up at an estate sale this morning for $60. Made by Walker, don't see any other markings. It's about four feet long, I assume it's an old truck service jack. Anybody know more about this?