Allis monoframe plow question

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   My new to me AC 2000 monoframe plow has the nitrogen charged accumulator system for the hydraulic resets. I opened the valve and some milky/creamy colored oil came out of the quick disconnect that you use to charge the system. I immediately think of water in the hydraulic oil. I speak to a local plow salvage/dealer who seems very knowledgeable. He says that's normal (he says its foam) and means the accumulator is working. He said that the nitrogen reacts with the oil. I said I thought there was a bladder between the nitrogen side and the oil side so how can there be a reaction? Can anyone explain what's going on here. My gut still says there must be water in the oil to make it milky. If I'm correct and it is water how do you flush the system on the plow. I don't want to charge the system and have that milky stuff mixing with my tractor's hyd oil. Any advice would be appreciated.

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Dale Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 11 Sep 2009 Location: Ontario Points: 375	Post Options Post Reply Quote Dale Report Post Thanks(0) Quote Reply Topic: Allis monoframe plow question Posted: 27 Oct 2010 at 5:38pm
	My new to me AC 2000 monoframe plow has the nitrogen charged accumulator system for the hydraulic resets. I opened the valve and some milky/creamy colored oil came out of the quick disconnect that you use to charge the system. I immediately think of water in the hydraulic oil. I speak to a local plow salvage/dealer who seems very knowledgeable. He says that's normal (he says its foam) and means the accumulator is working. He said that the nitrogen reacts with the oil. I said I thought there was a bladder between the nitrogen side and the oil side so how can there be a reaction? Can anyone explain what's going on here. My gut still says there must be water in the oil to make it milky. If I'm correct and it is water how do you flush the system on the plow. I don't want to charge the system and have that milky stuff mixing with my tractor's hyd oil. Any advice would be appreciated.

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maytag Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 30 May 2010 Location: lower alabama Points: 19	Post Options Post Reply Quote maytag Report Post Thanks(0) Quote Reply Posted: 27 Oct 2010 at 6:11pm
	Not sure what type accumulator you have but have to assume it is a bladder type as is most common with mobile equipment. If you have oil, milky or good coming out a gas (N) port more you have a bad bladder. HTH, Tom

Dale Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 11 Sep 2009 Location: Ontario Points: 375	Post Options Post Reply Quote Dale Report Post Thanks(0) Quote Reply Posted: 27 Oct 2010 at 6:17pm
	The milky oil came out the hyd oil fill port (when I cracked open the valve and the male connector seeped a bit) not the gas side. I believe it has a bladder too which makes me think that there can't be a reaction with the nitrogen as much as it is contaminated with water. But again this is all new to me.

maytag Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 30 May 2010 Location: lower alabama Points: 19	Post Options Post Reply Quote maytag Report Post Thanks(0) Quote Reply Posted: 28 Oct 2010 at 11:55am
	The N and oil are seperated by the bladder so there is no reaction, milky oil as you suspected is contaminated with water. No good way to flush thru there without disassembly of the accumulator but it would be time well spent and replace the bladder while you are at it. HTH, Tom

sandylakeimplement Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 18 Sep 2009 Location: Sandy Lake, PA Points: 399	Post Options Post Reply Quote sandylakeimplement Report Post Thanks(0) Quote Reply Posted: 28 Oct 2010 at 12:37pm
	The milkiness would be caused by moisture in the oil not by nitrogen but the nitrogen bladder may be ruptured after all these years. Feel free to call me about how to check the nitrogen side. 724-376-2489 Bill @ S>L>I
	Sandy Lake Implement Sandy Lake, PA 724-376-2489 www.sandylakeimp.com FIND US ON FACEBOOK