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Allis Chalmers WC oil pressure?

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Case1783alt
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PostPosted: Mon Oct 01, 2018 5:59 am    Post subject: Allis Chalmers WC oil pressure? Reply to specific post Reply with quote

My dad and I have just yesterday got a 1941 Allis Chalmers WC running. When my dad checked the oil pressure gauge however, it read no oil pressure. He thought it was just the old gauge, and put in a new gauge. When we started it again, there was no oil pressure. He could feel it with his thumb when he put it over the hole. Could anyone determine why there is no pressure readable on a gauge, or do WC tractors just have a low PSI?
 
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Butch(OH)
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PostPosted: Mon Oct 01, 2018 7:09 am    Post subject: Re: Allis Chalmers WC oil pressure? Reply to specific post Reply with quote

The pressure at the gauge port is low, did you use the correct gauge for the application? Most regular 80 lb gauges wont read anything. First thing to do is remove the oil filter. There should be a length of tubing that presses in the center of the housing and protrudes into the element, if it is missing the guage will read zero. The gauge will also read zero while a new element is filling. The engine is fine for most uses with very low pressure at the guage, I think the line between low and normal is about 5 lbs?
 
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Case1783alt
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PostPosted: Mon Oct 01, 2018 7:29 am    Post subject: Re: Allis Chalmers WC oil pressure? Reply to specific post Reply with quote

Well, we did just add a new oil filter, and had ran it only about 5 times for around 10-20 seconds at a time (Dad was testing oil pressure). And, the gauge he tried was around 100PSI. I think we could try the original gauge again.
 
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old
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PostPosted: Mon Oct 01, 2018 8:21 am    Post subject: Re: Allis Chalmers WC oil pressure? Reply to specific post Reply with quote

The WC as with many A/C engines use a oil filter back pressure system that build pressure in the filter. If you put on the wrong type filter or the up right pipe that goes into the filter stayed in the old filter you will have very low oil pressure.
 
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DrAllis
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PostPosted: Mon Oct 01, 2018 8:36 am    Post subject: Re: Allis Chalmers WC oil pressure? Reply to specific post Reply with quote

10 to 12 psi is spec numbers. Anything over 5psi would be good enough. That standpipe has to be in there. The filter should be cotton string inside, not paper.
 
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Case1783alt
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PostPosted: Mon Oct 01, 2018 9:19 am    Post subject: Re: Allis Chalmers WC oil pressure? Reply to specific post Reply with quote

To be honest, the oil filter my dad grabbed was just some Kleenite filter he had sitting on a shelf that hadn't been opened since probably the 80s or 90s. Does anyone know if we should get a new oil filter and if we do, what kind and number?

I know nothing about the filter, other than it is a Kleenite. I might be able to get the number later, but right now I am in school.
 
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PostPosted: Mon Oct 01, 2018 9:31 am    Post subject: Re: Allis Chalmers WC oil pressure? Reply to specific post Reply with quote

I use the Wix 57011 filters on all my A/C machines. I did have to go out and look at 4 machines before I found one that I could read the Wix number and that was on the WD45 I have. But that filter will work on a WC or B or C or WD etc.
 
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Case1783alt
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PostPosted: Mon Oct 01, 2018 10:41 am    Post subject: Re: Allis Chalmers WC oil pressure? Reply to specific post Reply with quote

Okay, I'll get my dad to buy that oil filter. Will that most likely fix the problem for the no oil pressure? I'm not sure if this matters much, but when my dad filled the tractor with oil, the bottom of the barrel had water and a bit of that got into the tractor. We know how to get it out, but Would that at all affect the pressure?
 
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PostPosted: Mon Oct 01, 2018 10:56 am    Post subject: Re: Allis Chalmers WC oil pressure? Reply to specific post Reply with quote

A small amount of water will not effect oil pressure but it can cause major problem with causing damage to the engine if it is very much at all. When ever you change a filter on these tractors you need to be sure the stand pipe stays on the filter housing or you will have not oil pressure
 
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Case1783alt
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PostPosted: Mon Oct 01, 2018 12:18 pm    Post subject: Re: Allis Chalmers WC oil pressure? Reply to specific post Reply with quote

Okay, we'll drain the water from the oil and then I'll see if we can get that oil filter. Thanks, everybody for your help on figuring this issue out.
 
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Jim.ME
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PostPosted: Mon Oct 01, 2018 2:01 pm    Post subject: Re: Allis Chalmers WC oil pressure? Reply to specific post Reply with quote

Other filter numbers for you if the Wix is not local to you:
AGCO/Allis Chalmers 70240912
NAPA 7011
Baldwin T300-M
Fram C159
Hastings LF405
Fleetguard LF571

For your reference I have attached a photo of the tube in a D14, which uses the same filter and tube. If missing, the tube is Allis Chalmers part number 70203899.



 
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Case1783
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PostPosted: Mon Oct 01, 2018 2:18 pm    Post subject: Re: Allis Chalmers WC oil pressure? Reply to specific post Reply with quote

I'm not sure if I remember, but I think that tube was bent. Does that affect it at all? Also, yes this my other account. I just use the account I initially posted with when i'm at school.

My dad may have that NAPA filter, we'll see.
 
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Jim.ME
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PostPosted: Mon Oct 01, 2018 3:03 pm    Post subject: Re: Allis Chalmers WC oil pressure? Reply to specific post Reply with quote

As long as the tube is tight in the base I don't think a slight bend will hurt it. Does it have a slight sweep to it like someone pulled it away from the block when removing the filter? Too much bend might case it to open a bigger path in the media for the oil to run down through. If it was bent enough to crack it or the base so the oil can dump before reaching the upper end of the tube it will be a problem. The tube pulls out it doesn't thread into the base.

The Kleenite filter may be correct if it is packed with fiber, don't have any info on them. Filters that sit on a shelf for years can get dirty if packaging isn't tight and develop rust inside from temperature and humidity changes, so a new filter will be better.

The Wix filter used to be 51011 and worked fine, but a number of years ago they decided to "improve" it by building them with paper media like newer filters. These were a disaster as the engines would not build oil pressure with them. I did an oil change on one of my tractors during that time and experienced the problem first hand. Soon after this was found and they received enough complaints, Wix returned to the packed media and brought out the 57011 to replace the 51011. That is the quick story of why people mention being sure you have the string or other packed media, not paper, in the filter you use.
 
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Case1783
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PostPosted: Mon Oct 01, 2018 5:39 pm    Post subject: Re: Allis Chalmers WC oil pressure? Reply to specific post Reply with quote

Okay, that's interesting.

Tomorrow my dad should be able to get a filter. If not it might be a few days. Once we get it, we should be able to swap the filter and see if we can get this problem fixed. Once again, I thank you all for your suggestions on helping this issue.
 
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D beatty
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PostPosted: Tue Oct 02, 2018 10:00 am    Post subject: Re: Allis Chalmers WC oil pressure? Reply to specific post Reply with quote

Make sure that filter looks like the one on the right.

 
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