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Ford 9N, 2N & 8N Discussion Forum
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Oil Pressure

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00fxd

06-05-2005 11:04:05




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I lurk on this board quite a bit and have learned many things about my '40 9n. When my tractor sits for a couple of weeks the oil press my not come up until I shut down and remove the big nut on the front of the eng and pour some oil down. That orifice must go into the oil pump. I then have instant oil press. I learned that here. This is not a good situation because each time I start it it takes a while for the press to come up, or maybe not at all. Is there a better way to keep the oil pump full? I REALLY don't like her runnn' dry.

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ZANE

06-05-2005 13:32:08




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 Re: Oil Pressure in reply to 00fxd, 06-05-2005 11:04:05  
Very first rule. No multigrade oil in the N engine.

If you now have 30W which is what it is supposed to run then drain it out and put in 40W oil.

If this doesn't fix it then it is a pan pulling job and a pump rebuild and possibly a new pick up tube. The pickup tubes are bad to become loosened where they are soldered to the pump housing and this can cause problems of lose of prime and engine failure.
Zane

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FLAcharlie

06-05-2005 11:23:50




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 Re: Oil Pressure in reply to 00fxd, 06-05-2005 11:04:05  
been there done that.
Worn-out oil pump gears, time for a oil pump overhaul.



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00fxd

06-05-2005 15:18:31




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 Re: Oil Pressure in reply to FLAcharlie, 06-05-2005 11:23:50  
Thanks guys, does the pan come off? It looks like it does, I was told that it did not - had to split the tractor. Are they shell bearings? Maybe I should slide rod bearings in at the same time.



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Rob

06-05-2005 15:32:13




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 Re: Oil Pressure in reply to 00fxd, 06-05-2005 15:18:31  
You do have to support the tranny and pull the front axle support off to the side or at least support it. Move it to make room is what I like. The FO-4 Shop manual gives you one good way to go.
The N uses bearing inserts and you might slip in some plasti-gage to determine if you would gain anything by replacing them. You need to measure before you buy inserts anyway. If the crank has been ground or is worn you"ll need or can use oversized inserts so it"s not like you can just order inserts and have them when you pull the pan.

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00fxd

06-07-2005 10:09:36




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 Re: Oil Pressure in reply to Rob, 06-05-2005 15:32:13  
Thanks guys. How many hours labour to pull the pan?



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Rob

06-07-2005 11:51:50




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 Re: Oil Pressure in reply to 00fxd, 06-07-2005 10:09:36  
How many labor hours?

How many labor minutes maybe but that"s the experienced and ready shadetree mechanic. Another guy just sticking his toe into the waters spending most of his time looking for tools and jackstands and stuff could take an hour or even possibly, maybe even two. Two hours for sure you can have the oil pump off and sitting on the bench.
An oil pump pick-up tube that is solid will sing when you thump/tap it. If it"s loose or cracked it will more like clunk. Drop the pan straight down to the floor before you pull it to the side to avoid smacking the pick-up tube around because the tube reaches all the way down to the drain plug. You drop the pan some you can look in there to see what you got.

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00fxd

06-07-2005 15:06:18




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 Re: Oil Pressure in reply to Rob, 06-07-2005 11:51:50  
Thanks Rob, I'm quite mechanical and have a very good selection of tools. I even know where they all are! Dropping the pan would be easy enough, just wondering how big a deal it is removing the front axle. If thats the case it sounds easy enough. I'll get at it!



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