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Farmall & IHC Tractors Discussion Forum
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How do you prime an oil pump?

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ddg

01-27-2005 14:54:04




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Getting ready to put the Super A back together, new main & rod bearings, pistons, sleeves, etc. I worked on the oil pump, and have it ready to install. After it's bolted in, and geared to the cam, how can I prime the system without starting the tractor? Of course I'll oil the bearing shells, cylinders & stuff I can get to before I put it back together, but instant oil pressure would be best. I guess I can remove the plugs & hand crank it for a while & hope that works. Any ideas?

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brtx

01-28-2005 17:15:03




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 Re: How do you prime an oil pump? in reply to ddg, 01-27-2005 14:54:04  
if you are going to be rebuilding many engines i would consider getting a small air tank.make sure it is clean.install one line on tank with the other end going to thr oil galley where oil gauge line is attatched.add a little air to the tank and shortly your engine will be lubricated.filter will be prelubed.i would still lubriplate all the bearings to keep them lubed while doing your assy.try not to run tank dry as that may take some of the oil away from where you want it.if you go that route make sure prelube tank is capped off when not in use.

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El Toro

01-29-2005 07:41:01




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 Re: How do you prime an oil pump? in reply to brtx, 01-28-2005 17:15:03  
This the best way to prelube your engine using a pressure vessel. One of those old brake bleeder's
by Wagner are ideal for this after removing any brake fluid.

We used this procedure on all our engines. I spin the oil pump with a drill if possible at home. Hal



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gusc

01-28-2005 12:27:13




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 Re: How do you prime an oil pump? in reply to ddg, 01-27-2005 14:54:04  
I used exactly the same system as MagMan on every car/truck engine I overhauled and it works great. Vaseline is a petroleum product (It used to be called petroleum jelly) so it dissolves in engine oil. Can't beat STP on cams & bearings either

Just stuff the pump full, much easier than trying to turn the pump with a drill. To keep from losing the vaseline just don't turn the engine over a lot by hand unless the pan is full of oil.

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El Toro

01-28-2005 03:54:31




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 Re: How do you prime an oil pump? in reply to ddg, 01-27-2005 14:54:04  
You should prime the pump by submerging it in engine oil and rotate the gear until oil is seen being discharged and then install it on the tractor. A light coating of lubri-plate on the bearings is good too. Squirt some oil into the cylinders if the engine had been sitting since you rebuilt it, then attempt a start. Hal



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MagMan

01-27-2005 15:00:43




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 Re: How do you prime an oil pump? in reply to ddg, 01-27-2005 14:54:04  
Back when I used to fill the gears in the oil pump with Vasolene on cars that I put a new pump in they would pick up real fast. I dont know if this is advised here or not. Alls I have ever done is used STP on bearings and the rings when putting them in and some on the cyl wall then turn her over with out the plugs untill the guage rises. JON



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captaink

01-27-2005 15:00:17




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 Re: How do you prime an oil pump? in reply to ddg, 01-27-2005 14:54:04  
I put some oil in the pump before I assemble it. Then before I start the engine I do just what you said until the oil pressure gauge comes up. Then I put the spark plugs in, leave the switch off start cranking until the oil pressure gauge starts to come up (which shouldn’t be long) and then turn the switch on. Usually it will pop right off and you have “instant” oil pressure. Don’t choke it until after the switch is on and it shouldn’t flood in the short time it takes the oil pressure to come up.

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Dick Davis

01-28-2005 01:26:59




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 Re: Spray with a good epoxy primer in reply to captaink, 01-27-2005 15:00:17  
LOL, Sorry couldn't resist



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