220 hydraulic pump

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   My 220 seems to be gaining oil in the crankcase. The only logical reason would be some bad seals/orings in the pump. Are the repair parts still available, and do I need to be a rocket scientist to reseal it? Will it need to be disassembled entirely to replace the seal, or can I just replace the seal? I am pretty sure the pump is working properly, so I am hoping to get by with the minimum disassembly. Thanks for any advice.

	This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
	The Forum	Parts and Services	Unofficial Allis Store	Tractor Shows	Serial Numbers	History

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
redline Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Collins, IA Points: 1013	Post Options Post Reply Quote redline Report Post Thanks(0) Quote Reply Topic: 220 hydraulic pump Posted: 29 Apr 2010 at 11:50pm
	My 220 seems to be gaining oil in the crankcase. The only logical reason would be some bad seals/orings in the pump. Are the repair parts still available, and do I need to be a rocket scientist to reseal it? Will it need to be disassembled entirely to replace the seal, or can I just replace the seal? I am pretty sure the pump is working properly, so I am hoping to get by with the minimum disassembly. Thanks for any advice.
	If it weren't for the last minute, I wouldn't get anything done!

Sponsored Links

injpumpEd Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 13 Sep 2009 Location: Walnut IL Points: 4953	Post Options Post Reply Quote injpumpEd Report Post Thanks(0) Quote Reply Posted: 30 Apr 2010 at 6:32am
	are you sure it isn't fuel dilution? common thing to leak fuel past the pilot tube seals in injection pump due to broken flex ring/blocked return, or just a very worn pilot tube. HTH, Ed.
	210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!

Hurst Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Midway, Ky Points: 1213	Post Options Post Reply Quote Hurst Report Post Thanks(0) Quote Reply Posted: 30 Apr 2010 at 10:20am
	I had the same thing happen with my 7000's hydraulic pump on the engine. It was just the front shaft seal. Really pretty simple to replace, you just have to take the pump off, then use a seal pick/small screw drive/small punch and wood screw/whatever your preference set up is for pulling seals, pop the old seal out, and put the new one in. Make sure you get the seal number off of it before you pull it out. I got a new seal at carquest for something pretty reasonable. Tractor was down for less than a day. While you have the pump off, it could be a good time to make sure none of the relief valve caps are leaking, and if they are, undo them and put in new o rings. You can usually tell if it's diesel or oil by pulling the dipstick and dabbing it on a papertowel, as the dye in the diesel will show up on the papertowel. Hurst
	1979 Allis Chalmers 7000 5800 Hours

redline Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Collins, IA Points: 1013	Post Options Post Reply Quote redline Report Post Thanks(0) Quote Reply Posted: 30 Apr 2010 at 10:58am
	There is a real good chance it is fuel. I haven't used it much, mostly just putt-putting around the yard so far. It would take a pretty serious leak at a seal to add this much fluid. The fuel level in the tank is higher than the injection pump, so that could be feeding it constantly. Unless the hydraulic level is obscenely high, I don't think it would be able to flow by gravity. I will try the dipstick on the paper towel trick next time I am out in the shed. The seal on the hyd. pump will be much cheaper, but judging by every other part of this tractor to date, it will be both units leaking, and the previous owner probably welded a seal in rather than fixing it properly. I wish someone would have told him that replacement parts really were available. I don't think he knew that. How does a person beat a machine that badly? (I had done some work on it by the time this photo was taken.) Thanks for the responses and ideas!
	If it weren't for the last minute, I wouldn't get anything done!

Hurst Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Midway, Ky Points: 1213	Post Options Post Reply Quote Hurst Report Post Thanks(0) Quote Reply Posted: 30 Apr 2010 at 11:55am
	Another easy way to tell is to send an oil sample out. Costs about $20 at most. Some labs even offer a free first sample (I think blackstone does this). This will tell you for sure whether or not you have diesel fuel in the oil. Hurst
	1979 Allis Chalmers 7000 5800 Hours