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220 hyd. pump??
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Mike NEIN View Drop Down
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Joined: 15 Jan 2010
Location: Rome City, IN
Points: 405 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike NEIN Quote  Post ReplyReply Direct Link To This Post Topic: 220 hyd. pump??
    Posted: 06 Sep 2012 at 2:46pm

The 220 hyd. pump loses it's prime just as soon as I shut it off. I'll start it right back up and nothing. If I loosen the plug on top of the pump, it will prime and work all day but shut it off and it's gone. Where should I look or what needs done? Rebuild pump?

                                   Thanks, Mike
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Hurst View Drop Down
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Joined: 11 Sep 2009
Location: Midway, Ky
Points: 1218 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Hurst Quote  Post ReplyReply Direct Link To This Post Posted: 06 Sep 2012 at 3:16pm
Front shaft seal, doughnut gaskets on suction line, gaskets on suction line, and the short stub hose on the suction line (on my 7000's engine mounted pump it is right behind the engine frame rail on the bottom of the hydraulic pump).
 
Hurst
1979 Allis Chalmers 7000
5800 Hours
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MACK View Drop Down
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Joined: 17 Nov 2009
Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 06 Sep 2012 at 9:30pm
Clean the screen in rear end where suction line comes out.   MACK
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Mike NEIN View Drop Down
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Joined: 15 Jan 2010
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Points: 405 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike NEIN Quote  Post ReplyReply Direct Link To This Post Posted: 07 Sep 2012 at 6:54am
When we changed the rear end and flushed the system out cleaned the screen and it still has done this. I just don't understand why you can run it all day shut it off start it right back up and you don't have any hydraulics, but the pto runs until you prime it. 
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