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D19 oil pump
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ditchman24 View Drop Down
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Joined: 22 Jun 2017
Location: Watkins Iowa
Points: 106 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ditchman24 Quote  Post ReplyReply Direct Link To This Post Topic: D19 oil pump
    Posted: 06 Feb 2022 at 9:15pm
I am looking to possibly replace the oil pump in my D19 Diesel. Rebuilt the motor and put new gauges in but still shows lower oil pressure on the gauge. Below normal at idle and mid at WOT. Have no good gauge to verify actual pressure yet. Dose anyone offer a remand pump? Haven’t found much on the internet. Thanks for any info.
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chuck (WI) View Drop Down
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Joined: 07 Feb 2010
Location: wisconsin
Points: 200 		Post Options Post Options   Thanks (0) Thanks(0)   Quote chuck (WI) Quote  Post ReplyReply Direct Link To This Post Posted: 07 Feb 2022 at 6:38am
Did you try to adjust the oil pressure relief valve at all
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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: 07 Feb 2022 at 7:31am
Those engine normally carry good oil pressure. I would look for Debra under relief valve in block or in oil pump.                     MACK
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 21957 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 07 Feb 2022 at 7:43am
The last low oil pressure D-19 diesel I was involved with, was rebuild by someone else who installed -.010" mains or rods on a crankshaft reground to -.020".  Oil pressure was just barely decent on a cold start and then kept falling the warmer it got.
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ditchman24 View Drop Down
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Joined: 22 Jun 2017
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Points: 106 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ditchman24 Quote  Post ReplyReply Direct Link To This Post Posted: 07 Feb 2022 at 9:56am
Yes I adjusted the relief valve. Bearings are correct. I double checked them. I am going to locate a good oil pressure gauge and double check pressure.
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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: 07 Feb 2022 at 7:33pm
There should also be a relief on oil pump. Pull the plunger out of both and check for something under plunger or a bad seat.                     MACK
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tbran View Drop Down
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Joined: 14 Sep 2009
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Points: 3531 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tbran Quote  Post ReplyReply Direct Link To This Post Posted: 07 Feb 2022 at 9:32pm
Someone correct me if wrong - but do not those oil pumps have a torque, not bolted up to the block via flange?.  Seems like we had one come in after customer overhauled and tab on pump was broke allowing pump to drop down..
When told "it's not the money,it's the principle", remember, it's always the money..
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 21957 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 07 Feb 2022 at 9:45pm
Correct. Ear can be broken off the pump easily if overtorqued.
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ditchman24 View Drop Down
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Joined: 22 Jun 2017
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Points: 106 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ditchman24 Quote  Post ReplyReply Direct Link To This Post Posted: 20 Feb 2022 at 2:09pm
I got a good gauge hooked up on it today and found the new replacement gauge reads low. I'm not 100% sure what idle pressure is supposed to be but the new gauge confirmed 30+ max throughout throttle range. Book says 25-40.
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