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Common problems with B/C oil pressure?

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Category: Allis Chalmers
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=39113
Printed Date: 18 Jan 2025 at 6:13pm
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Topic: Common problems with B/C oil pressure?

Posted By: Don(MI)
Subject: Common problems with B/C oil pressure?
Date Posted: 17 Oct 2011 at 7:55pm

Guess what?

My ol' girl decided she wanted to quit pumpin oil! Ya, yikes!

Have a model 'C', and noticed the oil pressure gauge was not working, I mean the needle is all the way to the left and will not move, at all.

Checked into it tonight, and changed gauges, still....no oil pressure.

Then took the oil filter off. Fired it up, still.......no oil pressure.

Scratchin my head on this one. I have not tore into it yet, but was wondering..What are the common issues with no oil pressure on B/Cs ?

I did notice a little oil sludge in the base of the oil filter spicket, where is screws on, laying in the bottom. Will a little oil jello be enough to do this? Could the oil pump gear be spinning on the shaft, if the pin snapped?

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Galatians 5:22-24

"I got a pig at home in a pen and corn to feed him on, All I need is a pretty little girl to feed him when I'm gone!"

Replies:

Posted By: MNLonnie
Date Posted: 17 Oct 2011 at 8:26pm

I am having the same problem with my C. If I squirt oil down the tube inside the oil filter then fire it up it will have pressure. Mine is losing prime which means split the tractor and fix the pump so off come the cultivators. You could try squirting oil in yours to see if it changes anything.

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Waukesha B, B, IB, G, styled WF, D15, 615 backhoe, 2-Oliver OC3's, 4 Ford Model T's, 3 Model A Fords, AV8 Coupe, AV8 Roadster, 1933 Ford Wrecker

Posted By: Jack(Ky)
Date Posted: 17 Oct 2011 at 8:52pm

It sounds more like the pin in the end of the cam that runs the oil pump. I think they have the same setup as my old D14 and it did that one time.JP

Posted By: CTuckerNWIL
Date Posted: 17 Oct 2011 at 9:06pm

I f you have "jello" in the filter housing, It's could be a lot thicker down on the bottom of the suction screen, stopping the pump from working.

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Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF

Posted By: Norm Meinert
Date Posted: 17 Oct 2011 at 10:32pm

if you put oil in the pipe above the pump and start it up the oil pressure comes back that means the oil pump is bad. I rebuild the oil pumps. call 815-865-5372 or http://www.normsactractors.com - www.normsactractors.com

Posted By: Dick L
Date Posted: 18 Oct 2011 at 5:32am

The first thing to try is to prime the pump. If it will not prime then you need to check for a broken drive pin that is located at the back of the camshaft. This pin can be checked and replaced by removing the pan without splitting the tractor. The pin is located just in front of the rear cam bearing. I took pictures to help someone put in a pin this way several years back. If priming the pump does not get the oil pumping I will hunt them up.

Posted By: alan-nj
Date Posted: 18 Oct 2011 at 6:57am

my rc would lose prime. when i finally got around to taking it apart, i found that the spring inside the oil pump was broken. put a different spring in and works great now, doesn't lose prime. alan

Posted By: Jerry (Ohio)
Date Posted: 18 Oct 2011 at 11:43am

Had trouble with my B losing prime a couple of years ago. Put a bottle of STP in oil and have had no trouble since

Posted By: Don(MI)
Date Posted: 18 Oct 2011 at 6:26pm

BAD NEWS....

Tried putting oil in the filter tube, no luck.

Looks like I will be pulling the pan off in the near future and taking a look at the pump. I happen to have a couple extra, that might come in handy.

-------------
Galatians 5:22-24

"I got a pig at home in a pen and corn to feed him on, All I need is a pretty little girl to feed him when I'm gone!"