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Farmall & IHC Tractors Discussion Forum
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Pre- lube Startup

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Mike

03-10-2004 18:29:06




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I have just rebuilt a 46 B, from A to Z. New pistons, rings, valves, etc. Is there a way to pressure up the oil system before starting? Can I take the plugs out and spin it with the starter? The engine was assembled with Lubriplate assembly grease. Suggestions?? Thanks




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Dan Kelley

03-11-2004 10:14:30




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 Re: Pre- lube Startup in reply to Mike, 03-10-2004 18:29:06  
Take an old pump-up garden sprayer. Fill the can of the sprayer with a quart or two of engine oil. Modify the hose to attach to the oil pressure guage fitting on the engine. Pump all the oil into the engine, but stop before you start blowing air into the oil system. You should be good to go.



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Stan(VA).

03-11-2004 04:19:28




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 Re: Pre- lube Startup in reply to Mike, 03-10-2004 18:29:06  
The suggestions you've received all sound good, one more thing that I've used occaisionally is to leave the oil filter loose till the last thing (the very last thing before you hit the starter) and pour the last quart of oil straight down the oil filter openings. If everything is ready to start right up then it won't have time to all drain back yet and that is the quickest I have seen oil pressure jump up.
Stan(VA).

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Randy in NE

03-11-2004 04:05:34




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 Re: Pre- lube Startup in reply to Mike, 03-10-2004 18:29:06  
If you have pre-lubed the bearings and all of the other moving parts then you are ok. Any time you shut off your engine and let it sit then all that you have at startup is a light film of oil that has not dripped back down into the pan. There really isn't much difference between an overhaul with pre-lube and starting an engine that has sat there for months without running. That is why the pre-lubing of the parts is important. You do want to check for oil pressure right away and verify that you are getting oil to the top of the engine.

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gene b

03-10-2004 20:15:19




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 Re: Pre- lube Startup in reply to Mike, 03-10-2004 18:29:06  
What you have done will be OK T he oil pump in the engine will pump plenty of oil when you start the engine. You do want to check the oil in the tappet area when it starts to make sure that the stud in the center of the tappet assy is not blocked.



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lee

03-10-2004 19:23:29




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 Re: Pre- lube Startup in reply to Mike, 03-10-2004 18:29:06  
Pull the plugs as you thought and spin it up til you see some pressure on your gage. No simple way to do it otherwise. the pump drive is direct off the cam gear so the automotive trick above cannot be used. If you really want to over kill it you could rig a means to pump it up external thru the tap where the gage is but I've done it the way you thought no problems.



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42FarmallH

03-10-2004 19:11:41




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 Re: Pre- lube Startup in reply to Mike, 03-10-2004 18:29:06  
There is no way for you to spin the oil pump without turning the whole engine over on that particular tractor.

Personally, I pull the spark plugs and the valve cover - crank it over until you see oil on top of the rocker arms...

Of course if you assembled it with lubriplate you could just fire it up and run at idle for a couple minutes before throttling up...



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Steve from MO

03-10-2004 19:01:03




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 Re: Pre- lube Startup in reply to Mike, 03-10-2004 18:29:06  
Wait for some of the other guys. I know on cars you could spin the oil pump with an attachment on an electric drill. It went in through the hole where the distributor fastens.



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Bob

03-10-2004 19:19:24




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 Re: Re: Pre- lube Startup in reply to Steve from MO, 03-10-2004 19:01:03  
Steve,

You can't do that on the "B", because the oil pump drive is all on it's own, and the distributor does not mount on top of, and plug into, the oil pump, so there is no access from the top to drive the oil pump.

You could pre-lube it by buying a cheap plastic pump up garden sprayer, and putting a quart or two of engine oil in it, making an adapter to attach it to an oil gallery plug, (or the threaded hole where the oil gauge attaches). Pump pressure on the sprayer, and your engine will be pre-lubed. Shut the valve on the sprayer wand off just before the oil is all forced into the engine, so you don't inject a bunch of air.

Professional engine builders use an industrial strength version of this system.

On an engine with unusually low oil pressure, this can be used as a diagnostic tool by dropping the oil pan, and pressurizing the oiling system from the external source. You then look for the area of the engine leaking the most oil, such as a bad bearing, or a missing internal oil passage plug.

The alternative is to remove the spark plugs and crank the engine over, or tow the tractor slowly, until there is oil pressure.

Some engine rebuilders pack the oil pump with petroleum jelly (Vaseline) for faster priming. The petroleum jelly harmlessly disolves into the engine oil after start-up.

It is an old-timers trick to put a couple of extra quarts of oil in a newly rebuilt engine to aid lube on initial startup, and then drain out the excess.

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