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Farmall & IHC Tractors Discussion Forum
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Farmall A Questions from a Newbie

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Bob B

07-27-2003 19:17:14




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Hi Guys,

I'm new to this Farmall A stuff, I've had a '59 Cub for the past few years and love it. This weekend I drove up to New Jersey and picked up a restored 1939 Farmall A my dad found. The guy who owned it bought it restored and just drove it in a few parades each year. I ordered the manuals, but they are going to take a few days to get here. In the meantime I have some questions about the tractor I'm hoping you can answer. Don't laugh.

1. Uh....where's the dipstick? How do you check the oil level in the engine? I see two "L" shaped petcock arms hanging out of the top of the oil pan on the left side, but have no clue what they are for. Please tell me how to check the oil. And where do you put the oil in.....in the breather tube?

2. This tractor is magneto with manual start. How does the handle store? I see where it clips in next to the seat but does the end you grip just lay against the left fender, or is there a better way?

3. The tractor has a mechanical switch to ground the mag, which I assume is incorrect since it's not painted red. All the tractor parts guys only list a single prong electric switch as correct for magneto. What I've got now is a cable (like a lawnmower throttle) that connects to the side of the mag and slides a contact (I assume) into a similar contact on the mag and she quits. If the electrical switch is correct where is it wired to and what happens to the mechanical contact on the side of the mag? (The mag does have an IH logo so I assume it's correct).

4. On the back of the speed quadrant (the side facing you when you are in the seat) is an upside down "L" shaped bracket with a hole in it. The hole is in the horizontal plane, not vertical. What goes in the hole?

5. The oil pressure gage on the tractor now is obviously wrong (it reads 0-200 psi). What was the range of the correct IH gage and what did it look like? (I mean what did the face look like, numbers or a colored bar)

6. Ok, I give up....where is the Serial Number plate on this thing? I'm assuming it was lost or removed before it was repainted but I figured I could at least find the rivet holes. I've been told it was on the clutch housing, and then on the brake cover right under the floor board. Not on mine. If the person who told me this meant the sheetmetal cover on the end of the platform that protected the brake rods I'm out of luck....this tractor doesn't have one. Any other ideas where it should be? (Please be exact in your description, I already feel like an idiot not being able to find where it was mounted)

7. How much play in the steering wheel is normal? I can turn mine almost half way around, which makes for some fun driving when you need to turn fast. Do you take the slop out the same way you do on a Cub?

Sorry for the type of questions I'm asking, but I'm really lost without those manuals. Any info you can provide me would be greatly appreciated.

regards,
bob

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Farmalldan

07-28-2003 10:21:22




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 Re: Farmall A Questions from a Newbie in reply to Bob B, 07-27-2003 19:17:14  
Bob, The cable kill switch is correct for early Farmall A & B tractors. Without parts book, I cannot tell you the change over serial number. If you don't want this mag and kill arrangement, I'll trade you a later mag and switch for it. The bracket beside your throttle is for the kill switch. It is not correct for your tractor, indicating a likely problem with the steering support shaft and replacement of same. The serial number plate was on the brake shaft cover on very early '39 models (later models on LH seat support). If it's gone, look for engine number on RH side of engine block just below number one plug. Originally chassis and engine numbers matched. If yours does not indicate '39 model, engine was likely changed. I don't believe oil petcocks are original with "L" shaped handles. I suspect these are aftermarket replacements. Other clues to '39 model are Dzuz hood fasteners (through mid '40 or so) instead of J hooks and missing reinforcement gussets on final drive housings where implements attach.

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Bob B

07-28-2003 19:34:30




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 Re: Re: Farmall A Questions from a Newbie in reply to Farmalldan, 07-28-2003 10:21:22  
Thanks to all who commented on my questions, it's all becoming a little clearer now.

FarmallDan,

I checked below the #1 spark plug and found the following code:

6342 DB 2

from which I assume 6342 is the S/N, as it fits in the range of 1939 A S/N listed on this website. I don't have a clue what the DB or the 2 on the second line mean. What you said about the steering shaft is probably true, it looks brand new, no pitting or corrosion...so it's probably new, which explains the extra bracket. If the "L" shaped oil petcocks might not be original, what was the original like? Seems like a dumb way to check the oil level, but I guess Mr Dipstick hadn't been invented yet in 1939. My tractor does have the DZUS type fasteners on the hood and is missing the gussets on the final drive housings. Thanks again for the info, this is fun.

regards,
bob

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Farmalldan

07-29-2003 10:07:47




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 Re: Re: Re: Farmall A Questions from a Newbie in reply to Bob B, 07-28-2003 19:34:30  
Bob,
Forgot your question about petcocks. The factory petcock (at least on later tractors) has a diamond shaped head. However, I'm not certain about earlier petcocks. I need to look at a F-12 or F-14 to see what they had. The early A shared may of the standard components with these tractors. The purpose of the petcock was related to using distillate and kerosene fuel. These heavy fuels required quite a bit of heat to vaporize. If the engine wasn't hot enough, vaporization was incomplete and the raw fuel did not burn. Instead, it washed by the rings and into the crankcase, diluting the engine oil. Standard operating procedure for these fuels was to drain one quart from the crankcase at the end of the day and replace it with one quart of motor oil. This was done by opening the lower petcock and allowing the oil to drain down to that point. Then you closed the petcock and added a quart of oil. Add to the mix a suspicion of the accuracy of dipsticks and it makes a little more sense, doesn't it.

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Farmalldan

07-29-2003 09:53:32




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 Re: Re: Re: Farmall A Questions from a Newbie in reply to Bob B, 07-28-2003 19:34:30  
Bob, the number you found looks like a part number instead of a serial number. Was it cast into the block? The serial number is hand stamped on a machined pad at the very top of the block where the head joins it. It should begin with "FAAM" followed by numbers (I think). The "FAA" designates your tractor as a Farmall A and the "M" indicates an engine serial number. A blank serial number pad (if that is what you have) would indicate a replacement block which should have been stamped by the mechanic who replaced it. A replacement engine will have a serial number, but somewhat different than you would expect for a "39 model. I have seen a number of A's and B's with steering shaft supports that have been repaired at the bottom by welding. My theory is that water accumulated in the tubes and corroded the tube away at the bottom. It appears yours was replaced sometime with a better unit.
Good luck.

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Haas

07-28-2003 06:00:12




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 Re: Farmall A Questions from a Newbie in reply to Bob B, 07-27-2003 19:17:14  
Question 2 The crank handle stores in the clips. On the one we had in my youth, the handle end was always laid on the foot platform. I guess against the fender would be OK too.

Question 4 The bracket on the back side of the throttle quadrant is where the magneto cut off ignition switch is supposed to go. It's one of the pull push IH ignition switches.



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glenshoe

07-28-2003 04:28:32




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 Re: Farmall A Questions from a Newbie in reply to Bob B, 07-27-2003 19:17:14  
Bob, the serial number plate on mine is on the left seat bracket under the seat. It's hard to see without getting some light on it and sometimes you have to gently rub it to get the characters to stand out. Enjoy. It's a great little tractor. Glenn



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Vern

07-27-2003 21:36:31




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 Re: Farmall A Questions from a Newbie in reply to Bob B, 07-27-2003 19:17:14  
Loose steering is common on "A"s. There is a pinch bolt through the arm under the gearbox.



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New Super A Man

07-27-2003 20:12:27




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 Re: Farmall A Questions from a Newbie in reply to Bob B, 07-27-2003 19:17:14  
The only thing that I can help you with is checking the oil. If you look, one of the petcocks will be higher up on the pan than the other. It is the one toward the front on my Super A. The upper petcock is like the full mark on a dipstick. The lower one is like the quart low mark on a dipstick. If you open the upper one and a little oil drips out, you are full. If a lot runs out fast, you are over full, leave it open and drain some off. If none comes out, open the lower petcock. If some runs out, you should be ok for now. If none comes out, you are low, add some oil. You are correct, the oil goes in the tube under the breather cap. On my SA it is marked OIL, don't know about an A. Maybe not exactly as the books will explain, but thats how it was explained to me. Hope this helps a little.

Kevin

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Shaggy

07-27-2003 19:48:30




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 Re: Farmall A Questions from a Newbie in reply to Bob B, 07-27-2003 19:17:14  
Hello and good score on the A. The 2 Lshaped arms are for checking the oil. As for the crank, the way I have mines is with the handle going down along the clutch pedal I am not sure if its right but it works.The mag switch sounds wrong,it should have a 1 post switch or a grounding tab on the mag itself.The bracket?no clue.the oil pressure should have a Low or High low being in the red.The serial number tag should be on theseat bracket next to the trans.And a half a turn of play isn't to bad. To tighten it you may have to drop the front axle and try to tighten the bolt on the pitman arm. I may not right on all of this but I close. Have fun and good luck.

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