My "new" snowblower was of course a used snowblower. My hydraulic sump is 12 gallons, but I still did not want to mix the unknown "foreign" oil from the hydraulic chute pump into my common sump. I came up with a solution.
I hooked up one hydraulic line to one of the two toplink lines, then "purged" the system. I operated the toplink until clear, clean fluid passed from my sump into the chute pump, and out the free unattached hydraulic line. After a few squirts, pump and lines purged of all old fluid. Then I connected the free line and the chute worked fine. The result was not having any old unknown oil in my sump. Probably not a big deal, but TBN has encouraged me to sweat the details.
Bob
I hooked up one hydraulic line to one of the two toplink lines, then "purged" the system. I operated the toplink until clear, clean fluid passed from my sump into the chute pump, and out the free unattached hydraulic line. After a few squirts, pump and lines purged of all old fluid. Then I connected the free line and the chute worked fine. The result was not having any old unknown oil in my sump. Probably not a big deal, but TBN has encouraged me to sweat the details.
Bob