CAT 3126 oil change. And filter

It is different if there is no oil pressure and there should be some. That means something is broken. We are talking about a situation here when everything is working.

Birken Vogt said:

I had an argument on some other site about this and somebody pointed out a Cummins manual that actually does say to pre-fill them, I saw it with my own eyes.

Nevertheless I am still not pre-filling anything.

BTW, I think a HEUI engine will start with no oil pressure after a filter change just the same as it ever does. It carries its oil in the HEUI pump or some kind of reservoir I think. Somebody correct me if I am wrong.

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The heui pump does have a small reservoir and they will run on it for a few seconds.
The reservoir has a utube that fills it. If that tube fails you will see hard starting after sitting because the heui airlocks.

This is a subject that is as universally polarizing as you can get. There is no in between. If you pre-fill, you are going to destroy the engine. If you don't, you are going to burn out the bearings in 1000 hours. SMH.

Shimmy1 said:

This is a subject that is as universally polarizing as you can get. There is no in between. If you pre-fill, you are going to destroy the engine. If you don't, you are going to burn out the bearings in 1000 hours. SMH.

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This most tempts me to mention covering exhaust stack to keep turbos from spinning, but I would never do that!

From personal observation I see exhausts left open far more often than I see them covered. I really do not know if it even makes a difference in the grand scheme of things.

I did not even know covering exhausts was a thing until I went on the internet. Nobody does it around here.

My take on covering exhaust is this: When you see a covered exhaust, you can bet your sweet a$$ that the driver either A. Had a customer try and blame him a turbo failure, or B. The boss insists that ALL drivers cover exhaust because a customer tried to blame a driver for a turbo failure.

Funny conversation, No one mentioned cartridge type. The DD series 13, 15, 16 Daimlers are all cartridge.
As soon as the cover which retains the cartridge is unscrewed that filter housing drains. So when starting
there is no oil in cartridge until the psi comes up, which takes about 3 to 4 seconds. Plus you must change
oil and filter first then start engine till oil pressure levels at 50, shut off then change fuel filters. If not done
in that order while priming fuel system with empty oil filter it can throw a code of no oil psi and not start.

As far as covering a stack for transport it would have to be a short one. Old Myth like the natural oil in your
hands will ruin a engine insert bearing surface. That comes from people who wear a belt and suspenders--
THEY DON"T TRUST THEIR PANTS.

On a dd I would change one fuel filter and start, then change the other. They really don't like to prime

cfherrman said:

On a dd I would change one fuel filter and start, then change the other. They really don't like to prime

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The DD's will prime quickly if two people do it, short cranking intervals while another keeps priming.