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Making oil pump priming plug accessible

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Shorty
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Making oil pump priming plug accessible

Postby Shorty » Fri May 19, 2017 8:33 pm

Hello--I am new here so be gentle if I am asking an old question/topic. I'd like to have good/easy access to my oil pump priming plug without pulling my Touch Control Hydraulic lines. I have been thinking about maybe even buying a spare line set to see if I can make room between the lines for a small pipe fitting (or fittings) to pass through between the lines. Right now my return line has the shape of the set screw plug worn into it's backside. I can fix that, but I am wonder if anyone has modified this area to have kink-free steel lines and access to that plug also.---Thanks for any help or ideas.
Dad's Cub is my Cub and I love it like he did !!!! :)

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Glen
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Re: Making oil pump priming plug accessible

Postby Glen » Fri May 19, 2017 9:06 pm

Hi,
Here is a picture of where the hole is that I use for priming the oil pump. Just remove the oil filter top, and oil filter, and it is easy to see, use a light if you need to.
I fill a clean oil can with motor oil, and pump it into the hole, you might need more than one filling of the oil can to fill the passages in the engine.
Watch the oil gauge after starting, it takes up to 25 seconds for the gauge to show pressure, it has to fill the oil filter housing before the gauge will show pressure. :)
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Cub oil filter.jpg

BigBill
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Re: Making oil pump priming plug accessible

Postby BigBill » Fri May 19, 2017 10:46 pm

When I was rebuilding gravely tractors I took a Chevy small block oil pump and threaded the outlet hole and ran a hose to the oil system. I let the intake hose into a quart of oil. To powered the oil pump with a 1/2" drill. I ran the pump till the front pto clutch had oil.

With Chevy engines I use a distributor with the gear turned off. I prime the system driving the distributor with a 1/2 drill.

I'm going to have to make a oil pump system for the Cubs too.

I always pack the oil pump with grease to prime it. If your not priming it with a external pump. This way the pump has suction right away.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.

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Re: Making oil pump priming plug accessible

Postby Barnyard » Fri May 19, 2017 11:57 pm

I scrapped that engine several years ago, but I'm glad that pic of its oil port still lives on! :lol:
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Re: Making oil pump priming plug accessible

Postby muleboss » Sat May 20, 2017 8:27 am

If you use the tractor much you should only have to prime it once. Why go to all that work for a one time use?

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Re: Making oil pump priming plug accessible

Postby ScottyD'sdad » Sat May 20, 2017 9:07 am

muleboss wrote:If you use the tractor much you should only have to prime it once. Why go to all that work for a one time use?

Agreed!
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Re: Making oil pump priming plug accessible

Postby J3 Driver » Sat May 20, 2017 9:20 am

My cub has an Allen head screw on top of that port that you can access without removing the filter. I've primed it through that already.

I'd take a picture but my cubis at a shop getting a valve job.

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Re: Making oil pump priming plug accessible

Postby staninlowerAL » Sat May 20, 2017 2:32 pm

J3 Driver wrote:...an Allen head screw on top of that port that you can access without removing the filter. I've primed it through that already...
If you can remove it! I've not had much success with removing it.
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)

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J3 Driver
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Re: Making oil pump priming plug accessible

Postby J3 Driver » Sat May 20, 2017 6:03 pm

Mine came right out. Easy peasy.

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Glen
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Re: Making oil pump priming plug accessible

Postby Glen » Sat May 20, 2017 9:07 pm

Hi,
I remember it was your pic of the block, Bill. :)

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Re: Making oil pump priming plug accessible

Postby pickerandsinger » Sat May 20, 2017 9:30 pm

muleboss wrote:If you use the tractor much you should only have to prime it once. Why go to all that work for a one time use?
.....I was puzzled by that also...Mine sit all winter unused and I don't have to prime them...
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Re: Making oil pump priming plug accessible

Postby John *.?-!.* cub owner » Sat May 20, 2017 9:41 pm

If you have to prime it very often there is a good possibility the nut that mounts the intake is loose. It is necessary to drop the pan to check that though.
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Re: Making oil pump priming plug accessible

Postby Smarg » Sat May 20, 2017 11:01 pm

I restored my cub, emptied the oil pan, ran some kerosene through it, and put new oil in with some Marvel Mystery Oil for the valves. My oil pressure gauge tells me it has good pressure. I never primed anything like what is described.

Does the oil pump prime itself, or must you do it manually? Am I in danger here?

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Re: Making oil pump priming plug accessible

Postby Bob McCarty » Sat May 20, 2017 11:03 pm

If the gauge shows pressure, you don't need to prime it.
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we need to think differently."
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Smarg
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Re: Making oil pump priming plug accessible

Postby Smarg » Sat May 20, 2017 11:09 pm

Thanks Bob.


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