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Farmall & IHC Tractors Discussion Forum
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stupid questions about A/Super A motor

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drab cat

03-07-2007 20:45:32




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I"ve got a Yale forklift with a 1953 u2a IH power unit (which seems to be the same motor as in the A and Super A).

Stupid question #1: Where is the fuel pump? I would just follow the fuel line, but the fuel is currently coming from a mountain dew bottle. I"m ruling out gravity feed since the fuel tank is below the carb, but I can"t seem to see it anywhere obvious. We"ll pretend it is hidden on the forklift. Yeah.

Stupid question #2: Is this thing + ground? I know it is 6 volt, but it didn"t have a battery in it when I got it. I think it is, but I"d appreciate a head nod from someone who has one of these motors.

Not so stupid questions: How much ignition timing should this have? When I got this thing the distributor was locked up (due to an overly long screw holding the condenser) and the distributor gear was partially stripped. Needless to say, I need some place to start, and I would prefer starting at the right setting.

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drab cat

05-26-2007 21:26:36




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 Re: stupid questions about A/Super A motor in reply to drab cat, 03-07-2007 20:45:32  
Another stupid question: Where do these typically leak oil from? I have oil hemorrhaging from somewhere near the front of the motor. I can't tell if it is the pan or the timing cover. If it is the pan, I can (sort of) drop the pan and just change the gasket. If it is the timing cover, I'm probably going to have to pull the motor or get used to an oil leak.

Also, this thing smokes like crazy. Right when I fire it up, no smoke. As it sits running, it smokes pretty good. When you give it gas, it looks like I am pulling some sort of james bond thing. After it runs for a long while, the smoke decreases. The smoke seems to be white which would lead me to believe it is water, but the plugs don't look like they are being steam cleaned. Ideas?

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drab cat

03-11-2007 08:11:44




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 Re: stupid questions about A/Super A motor in reply to drab cat, 03-07-2007 20:45:32  
Well I don't like the prices I am seeing on the 6 volt fuel pumps locally, and after looking at the forklift a bit more, I am not sure that it came with an electric one in the first place. I don't guess that really matters, but I still don't care to do the electric if I can help it.

I stumbled upon a vacuum fuel pump made by Mikuni (see link). So which do I go with? I am sensing 14 liters/hour is plenty for this little guy. That translates to 3.7 gph. I don't want to buy it and then realize I was wrong. The next one up is 35 liters/hour, but then I'll have to plug one of the outlets. They are cheap enough at around $20.

I have a vacuum fitting in the intake (currently pinched shut) that I figure I can use for the vacuum source. Should that be hooked up to something at the moment?

And I got the forklift running again. Thanks to everyone for the help. A previous owner did convert it to negative ground so I left it like that. Everything seems to work that needs to work. It does leak gas, oil, and water. No hydraulic leaks though.

Thoughts?

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drab cat

03-08-2007 08:03:03




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 Re: stupid questions about A/Super A motor in reply to drab cat, 03-07-2007 20:45:32  
third party image

I am leaning towards an electric pump. Just above the gas tank (which is most certainly in the original location buried at the very bottom of the chassis underneath the filler neck that protrudes through the side of the forklift and one of the hydraulic cylinders) is a platform with two holes. It is almost like there used to be a pump mounted there. Attached to the carb is a fuel pressure regulator. I can tell someone had it off recently, but the regulator itself looks original--or old anyway.

In the pic, I think you can see the fuel pump boss that Gene was talking about. So a mechanical pump could go there? Considering the gas tank and carb are on the other side of the motor, I think I will go for the electric pump. And yes, the distributor is missing. No need to recount the saga of the missing distributor at the moment.

I guess I am now in search of a cheap 6v pump.

Thanks for your help.

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El Toro

03-08-2007 05:35:19




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 Re: stupid questions about A/Super A motor in reply to drab cat, 03-07-2007 20:45:32  
If there's battery cables still attached, the cable with the large end for the + battery post should be grounded on the tractor. Hal



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Brownie450

03-08-2007 05:05:24




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 Re: stupid questions about A/Super A motor in reply to drab cat, 03-07-2007 20:45:32  
Questions are how you don't make mistakes. Are you sure it doesn't have an electric pump?



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gene bender

03-08-2007 04:55:51




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 Re: stupid questions about A/Super A motor in reply to drab cat, 03-07-2007 20:45:32  
There is a placeon the block in front and a little below of the filter for the fuel pump ALL cams on the 113 engines have a lobe for the fuel punp but not all the blocks have the boss and hole for it. There is probably a dipstick under the filter also. The blocks used for aux like on a baler, combine and other uses had the plate i have one and have seen these blocks used on the A,B and C tractors even have a cutout by the filter for a starter which was left hand drive as it mounted from the front instead of the rearwhich was where the starter mounted on the torque tube. I had a customer who tried to use the tractor starter mounted on the block and i told him that it had to run left hand that was why he couldnt get the starter to work he reversed the fields and found a left hand bendix and now it starts. The charging system probably is DELCO REMY and could be pos grnd as thats he way my baler motor is.

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Nat 2

03-07-2007 23:06:20




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 Re: stupid questions about A/Super A motor in reply to drab cat, 03-07-2007 20:45:32  
The original engine was designed for gravity fuel feed. I don't think it has provisions for a fuel pump. Are you sure the fuel tank is in the "stock" location?

It was probably positive ground, unless Yale was weird at the time. Most everyone was positive ground. Really doesn't matter. All that'll happen if you get it backwards is the generator won't charge until you polarize it, and then the Ammeter will read discharge when the generator is charging.

Find TDC on the compression stroke for cylinder #1. Use the thumb-over-plug-hole trick, feel for whooshing air, then line up the mark on the pulley with the timing pointer on the engine. Pull the distributor cap, turn distributor until rotor points at #1 tower on distributor cap when you replace it. That should be good enough to start.

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