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D17-19 PS ?
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Bill Deppe/AC Salvag View Drop Down
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Joined: 12 Sep 2009
Location: Maquoketa, Iowa
Points: 968 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Bill Deppe/AC Salvag Quote  Post ReplyReply Direct Link To This Post Topic: D17-19 PS ?
    Posted: 27 Mar 2020 at 1:47pm
What would be the problem when fluid is forced up through the fill breather on a D17-19
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Alex09(WI) View Drop Down
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Joined: 15 Mar 2012
Location: CECIL WI
Points: 1698 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Alex09(WI) Quote  Post ReplyReply Direct Link To This Post Posted: 27 Mar 2020 at 2:07pm
A. overfilling the reservoir
B. air leak on suction side of pump
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Stan R View Drop Down
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Joined: 03 Dec 2009
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Points: 943 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Stan R Quote  Post ReplyReply Direct Link To This Post Posted: 27 Mar 2020 at 3:21pm
c. wrong oil ??
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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: 27 Mar 2020 at 8:34pm
Moisture in oil.        MACK
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DaveKamp View Drop Down
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Joined: 12 Apr 2010
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Points: 5637 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DaveKamp Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2020 at 9:20am
Or just not enough oil. 

Low oil level causes aeration, and the foamed-up oil takes more volume than in non-aerated (liquid) state, so it belches it up the pipe.  Moisture exacerbates the circumstance because it goes from a high pressure, to a low pressure, back to a high pressure, then starts to boil, which means the air bubbles are actually steam...  the fluid would have a milky (or curdled-milky) look to it when cool.

Lots of guys deal with chronic low oil level and overflowing tanks, and don't realize that one begets the other in a viscious cycle (ooh... I should'a said Viscous Cycle... but Britain stopped making them back in oh... '55...)

If, when cold, the level is okay, and it foams it up immediately, it could be a pinhole leak in a suction line, or a pump seal that isn't...
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chuck (WI) View Drop Down
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Joined: 07 Feb 2010
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Points: 200 		Post Options Post Options   Thanks (0) Thanks(0)   Quote chuck (WI) Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2020 at 3:12pm
Had this problem last summer, it was the seal on the shaft behind the pulley, got it at advance auto for $4 bucks, the seal didn't look bad but blew fluid out the breather hole and had lots of air in the system, put new seal in and works like new
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chuck (WI) View Drop Down
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Joined: 07 Feb 2010
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Points: 200 		Post Options Post Options   Thanks (0) Thanks(0)   Quote chuck (WI) Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2020 at 3:15pm
Was referring to the seal on shaft behind poly on the power steering pump
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Bill Deppe/AC Salvag View Drop Down
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Joined: 12 Sep 2009
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Points: 968 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Bill Deppe/AC Salvag Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2020 at 4:32pm
Thanks for all the input.  We've had to disassemble this D19D engine three times to finally fine the source of it not maintaining constant oil pressure, which is another issue. I'll follow these ideas this week and let the results be know
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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: 29 Mar 2020 at 9:17pm
The pump does not maintain pressure all the time. Only when you turn steering wheel, then only enough pressure to do the job.        MACK
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