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6080 hydraulic pump prime
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rowtooe View Drop Down
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Joined: 20 Oct 2010
Points: 23 		Post Options Post Options   Thanks (0) Thanks(0)   Quote rowtooe Quote  Post ReplyReply Direct Link To This Post Topic: 6080 hydraulic pump prime
    Posted: 26 Mar 2012 at 6:44pm
Allis Chalmers 6080. When I shut the tractor off, I loose the prime on the hydraulic pump, no steering or other hydraulics when I restart. I re prime and everything works. What could be causing the loss? The rear end acts as the tank for the fluid. Please let me know if any of you have had the same problem. Thanks  Pete
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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: 26 Mar 2012 at 7:53pm
Check the suction line for leaks.  It can lose its prime without visable leaks, as the leak can be small enough that air will go in but fluid won't go out.  Not completely familiar with the 6080s suction line routing, but if it has any large hose connections or connections with doughnut gaskets, that would be my first place to look.

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: 26 Mar 2012 at 10:21pm
Front seal in pump needs replaced.  MACK
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Points: 23 		Post Options Post Options   Thanks (0) Thanks(0)   Quote rowtooe Quote  Post ReplyReply Direct Link To This Post Posted: 27 Mar 2012 at 4:34am
Mack, do you mean the gasket where the pump mounts to the tractor? Or internally? Thanks

Pete
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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: 27 Mar 2012 at 6:27am
The shaft seal in pump drive shaft.  MACK
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Points: 23 		Post Options Post Options   Thanks (0) Thanks(0)   Quote rowtooe Quote  Post ReplyReply Direct Link To This Post Posted: 27 Mar 2012 at 2:54pm
Thanks Mack, I will give that a try, It makes sense.

Pete
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