[AT] Low oil Pressure on 8n? 8v to 6v adjustment?

Mon Jul 8 09:38:39 PDT 2013

If you change the gauge, and you still do not have any oil pressure, you 
might need to prime the system. 
http://forums.yesterdaystractors.com/viewtopic.php?t=530809

A couple of sites to check for info are:

http://www.ntractorclub.com
http://www.yesterdaystractors.com/nboard/wwwboard1.html

I have a 48 8N (front mount dist), and it runs between 20 to 40 psi 
depending on engine speed and temp.

You also might want to check out this: 
http://www.ntractorclub.com/howtos/pdfs/Tips-for-Ford-N-Tractor-Owners.pdf

Hope this helps,
Howard

On 07/08/2013 10:38 AM, charlie hill wrote:
> If there is a side cover and you don't have a new gasket set don't take it
> off just to check.
>
> Charlie
>
> -----Original Message-----
> From: charlie hill
> Sent: Monday, July 08, 2013 10:06 AM
> To: Antique tractor email discussion group
> Subject: Re: [AT] Low oil Pressure on 8n? 8v to 6v adjustment?
>
> Yeah I forgot about it being a flat head.
> Is there a side cover over the valve train?  I never paid that much
> attention but there should be.  I also don't know about oil filters on
> a an 8N.  Don't know if it's a drain back filter or a pressurized by-pass
> type.
>
> Charlie
>
> -----Original Message-----
> From: Will Powell
> Sent: Monday, July 08, 2013 9:51 AM
> To: Antique tractor email discussion group
> Subject: Re: [AT] Low oil Pressure on 8n? 8v to 6v adjustment?
>
>
>
> Yes, ok, I will try the AC guage, can't hurt. I do see there is a plug in
> the oil line  manifold so putting the AC guage in will be easy... 8n is flat
> head, no valve cover or rockers , a nywhere else to check for flow on the
> 8n?
>
>
>
> I have to believe that the oil pressure is good enough since he was using it
> for about 5 years and never had an issue.
>
>
>
> ----- Original Message -----
>
>
> From: "charlie hill" <charliehill at embarqmail.com>
> To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
> Sent: Monday, July 8, 2013 9:29:52 AM
> Subject: Re: [AT] Low oil Pressure on 8n? 8v to 6v adjustment?
>
> Will if the fitting is the same an AC gauge should work.  I say should
> because while I believe the pressure range is about the same, I don't know
> if there is an issue with the orifice opening size in the gauge or line.
> It's worth trying.  First off take the gauge loose from the line and see if
> any oil
> squirts out.  If not then take the line loose from the tractor and repeat.
> I think the oil pressure is relatively low on both.  Also, the AC oil pumps
> have
> a spring and ball bearing pressure relief that controls to some degree the
> pressure.
> I suspect the 8N has some sort of pressure control on the pump.
>
> Take the valve cover off or look through the fill hole if possible and see
> how the oil is
> flowing to the rocker arms.  If there is plenty of flow you probably don't
> have anything
> to worry about as far as engine damage.
>
> Charlie
>
> -----Original Message-----
> From: Will Powell
> Sent: Monday, July 08, 2013 8:38 AM
> To: Antique tractor email discussion group
> Subject: Re: [AT] Low oil Pressure on 8n? 8v to 6v adjustment?
>
>
>
> Charlie,
>
>
>
> It's dash mounted. Good idea to check the line.
>
>
>
> Does any know if the  oil pressure on the 8n is significantly  different
> from the Oil pressure on an Allis Chalmers?  I have plenty of AC guages from
> the C,WD,D17 that I could use as a test.
>
>
>
> Regards,
>
>
>
> Will
>
>
>
> ----- Original Message -----
>
>
> From: "charlie hill" <charliehill at embarqmail.com>
> To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
> Sent: Monday, July 8, 2013 8:10:54 AM
> Subject: Re: [AT] Low oil Pressure on 8n? 8v to 6v adjustment?
>
> Will,  I don't remember if the oil pressure gauge on an 8N is
> dash mounted or on the side of the engine so this might not apply.
> I once had one of my AC tractors all of a sudden show NO oil pressure.
> After I got over the initial panic of thinking how much a rebuild was going
> to cost me I removed the valve cover and could see there was plenty of oil
> flow and apparent pressure.  Turned out the small steel tube that carries
> oil to the oil pressure gauge had become plugged up with oil sludge.
> I got it cleaned out good and the gauge went back to work just fine.
> Regardless where your gauge is mounted it would be worth your time to
> take the gauge off, then start the tractor just briefly and see how much
> oil is coming out of the fitting and how much pressure it appears to have.
> You can do that in a matter of a few seconds of running time.  That should
> tell
> you if it's the gauge or line to the gauge.
>
> Charlie
>
> -----Original Message-----
> From: Will Powell
> Sent: Monday, July 08, 2013 6:34 AM
> To: Antique tractor email discussion group
> Subject: [AT] Low oil Pressure on 8n? 8v to 6v adjustment?
>
>
>
> Hello,
>
>
>
> Helped my brother-in-law get his 8n running after it had been sitting for
> about 3 years.
>
> Cleaned out the fuel system.
>
>
>
> Engine was stuck. Took out the plugs, sprayed in some WD40. Let it sit for a
> while. Rocked it back and forth in 4th gear. Could see a little bit of
> movement from the fan.  Hit the starter again and it turned over.
> Knocked/tapped a little bit as the valves loosened up then all was fine.
>
>
>
> Rechecked the electrics. Cleaned out the points. Finally got spark. Started
> right up ran like a sewing machine.
>
>
>
> Was 8v and we had an adjustable resistor so we did not fry the 6 volt coil.
> That was a pain. Bought a new stock resistor and  we put in a 6 volt
> battery. What's the process for adjusting the regulator back down to 6 volt
> from 8?
>
>
>
> Also, while it was running I noticed that the oil pressure guage was not
> moving. Throttled it up and I noticed a little bit of movement in the guage.
> Is this normal? Could it be a bad guage, or, Is the engine worn out? It's
> not smoking out the exhaust. Next step is to try a new guage.
>
>
>
> Regards,
>
>
>
> Will
>
>
>
>
>
>
>
> Was tight
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