Posted by Geo-TH,In on January 13, 2015 at 10:48:43 from (50.104.121.187):
The last two times I've changed my hyd oil, it stunk. I'm using the oil the Manufacture recommends. Changing the filter and oil every 300 hours like recommended. This time I changed it at 250 hrs, still stinks.
Part of my problem is the hyd holds 5 gallons. About 1 gallon can't be drained. It's in the pump, hoses, 11 cylinders, and hydrostatic motor.
So, I've been wondering what is the best way to flush out the old stinky 1 gallon without taking everything apart? 44 hose fittings, some can only be gotten to by removing the cylinder form backhoe. NO WAY, NO HOW, DON'T EVEN THINK ABOUT IT. I just had a battle removing the leaky stabilizer cylinder.
Options I've been pondering: Only put 1 gallon in hyd, run all the controls up and down, put the rear wheels up and run them forward and backward. Then when I drain it, half the old gallon of old will remain.
If I did this a second time procedure a second time, then I would be left with a quart of old, then a Pint, then a half pint.
Or do a 2 gallons fill and flush twice? or fill it with 4 and drain it all out?
Either way, I would be using 4 gallons. A 4 gallon fill and flush will leave me with 20% of a gallon remaining. One gallon at a time will leave me with 6.25% of a gallon.
My question is, will adding a gallon at a time be safe to do with out damaging the pump? 2 gallons?
What's the best and safest option to clean up the hyd? I plan to go just 150 hours instead of the full 300 and see what happens. Oil is cheaper than a new pump.
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