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Farmall & IHC Tractors Discussion Forum
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Oiler Gear Gone On 1940 Farmall A Tractor

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Brian

04-01-2004 18:39:03




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Is there anybody out there that knows how to take gear box apart so I can replace the oiler gear on this tractor model? The way I read my shop manual it is a job that falls under basic procedures it looks very difficult to me. I really need some advice.

Thanks
Brian




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Lewis

04-02-2004 10:00:26




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 Re: Oiler Gear Gone On 1940 Farmall A Tractor in reply to Brian, 04-01-2004 18:39:03  
I have been using my Super A for many years without the oiler gear. Just do not let it run in neutral, none of the gears are then getting oil.



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Bob

04-01-2004 21:39:15




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 Re: Oiler Gear Gone On 1940 Farmall A Tractor in reply to Brian, 04-01-2004 18:39:03  
One thing about the oiler gear... it is most needed when the tractor is not moving. As long as the tractor is moving, other gears are in mesh and throwing oil into the oil trough.

During periods when the tractor is idling in neutral, with the oiler gear missing is when there is no oil being thrown in the trough for the bearings.

We had a "B" 20 or 30 years ago that we mowed and raked hay with. For some reason, the gear broke, and got chewed up and fell to the bottom of the tranny in pieces just when we needed the tractor the most. We picked the chunks out of the bottom, and changed the oil. And since nothing is as permant as a temporary fix, we ran it 4 or 5 years that way before replacing the gear, with no apparent ill effects.

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Brian

04-01-2004 22:30:09




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 Re: Re: Oiler Gear Gone On 1940 Farmall A Tractor in reply to Bob, 04-01-2004 21:39:15  
See I also have a rattling noise when I'am moving so this could be pieces of gear causing this. What are the chances if I drive this tractor that were the teeth are missing on the gear that it could catch the gear wrong and tear everything up? Or would that never happen? I sure would like to try this first because it sounds like tearing it apart is a real big headache

Thanks Brian



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Bob

04-02-2004 09:29:38




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 Re: Re: Re: Oiler Gear Gone On 1940 Farmall A Trac in reply to Brian, 04-01-2004 22:30:09  
My oiler gear was aluminum, so it might not be so likely to hart the other grears. I'm not sure if they all are. However, if a big chunk of the oiler gear went through a set of the tranny gears you'd probably break something. I hate to say it, but if you've got a nasty rattle, you'd probably better fix it. It might turn out to be a tooth out of one of the steel gears, or a bad bearing, besides the obvious problem with the oiler gear.

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Brian

04-02-2004 11:13:19




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 Re: Re: Re: Re: Oiler Gear Gone On 1940 Farmall A in reply to Bob, 04-02-2004 09:29:38  
I took the top of thee gear box off this morning and I also drained the oil there were a pile of aluminum teeth in the bottom of the gear box I cleaned them all out and I still have the noise. What are the chances that the oiler gear is trying to ride on the gear it is supposed to and it can't because a lot of the teeth are gone and maby that is were my noise is comming from?

Thanks
Brian



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lee

04-02-2004 06:53:46




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 Re: Re: Re: Oiler Gear Gone On 1940 Farmall A Trac in reply to Brian, 04-01-2004 22:30:09  
The oiler gear is free wheeling on the counter shaft and can get out of sync with the reverse gear driving it if teeth are missing. Further damage is possible if not likely. Toss a coin.
Apparently you have seen the oiler gear damage with the trans top off. What does the rest of the gearing look like? What caused the damage? What is the overall condition of this tractor? It is decision time for this tractor. It is not worth going in there in my opinion to do just the oiler gear. If it needs other work (seals, brakes) and you plan to keep it, now is time to do it. Or you can drive it til it breaks (or maybe it doesn't) and then fix it. Or sell it now as is.

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Brian

04-02-2004 16:16:39




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 Re: Re: Re: Re: Oiler Gear Gone On 1940 Farmall A in reply to lee, 04-02-2004 06:53:46  
The rest of the gears look ok. It looks like I'am missing 1/2 of the gears on the oiler gear. I guess the bad part is the brakes were replaced last December along with all of the seals. I know this sounds very-very crude and not my type of thing to do but how about taking a cold chizzel to the remaining gears (ouch) so I don't have the problem with the awfull sounding noise that happens in all gears except reverse and neutral that is somthing else I don't understand if the oiler gear is most important in neutral why don't I get the noise there to.

Thanks
Brian

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Brian

04-07-2004 16:55:41




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 Re: Re: Re: Re: Re: Oiler Gear Gone On 1940 Farmal in reply to Brian, 04-02-2004 16:16:39  
To All:
I broke the rest of the teeth off run and goes down the road (with no noise) like nothing ever happened It appears that aluminum gear bent somehow and tried to mesh with reverse gear.

Thanks All
Brian



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lee

04-02-2004 20:03:41




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 Re: Re: Re: Re: Re: Oiler Gear Gone On 1940 Farmal in reply to Brian, 04-02-2004 16:16:39  
In neutral, the countershaft is not rotating so the oiler gear gets to the spot where there are no teeth and stops turning. When you drive the tractor the countershaft is turning and the oiler gear (although free wheeling on the counter shaft) is turning into the reverse gear that drives it. Teeth are likely getting knocked off one by one. If you can devise some means to fix the position of the oiler gear, maybe wire it to the case, so it cannot turn you can fix the noise problem without knocking the teeth off.

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Brian

04-04-2004 17:59:42




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 Re: Re: Re: Re: Re: Re: Oiler Gear Gone On 1940 Fa in reply to lee, 04-02-2004 20:03:41  
Thanks for all of the usefull info from everyone that wrote. I think I'am going the route to try and wire that gear out of the way. My tractor is a Industrial A so I don't think there is much of a difference between my tractor and all the other A Farmalls. I don't want to do any major repairs right now due to a spring tractor show. I think if I don't try and run any PTO implements I should be allright I think.

Thanks Again
Brian

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lee

04-01-2004 20:10:23




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 Re: Oiler Gear Gone On 1940 Farmall A Tractor in reply to Brian, 04-01-2004 18:39:03  
I assume you have the I&T manual. What they call Basic Procedure is just a quick overview of what needs to be done to get where you need to go. In the case of the oiler gear, you are right, this is a most major repair. The tractor must come all apart. I'll just outline it here without much detail. Remove the rear wheels. Remove the final drive/differential shaft housing assemblies as unit assemblies at the diff house. Remove the PTO rear cover and belt pulley attachment assembly.
Remove the differential bearing retainers and remove the differential. Split at the transmission case/clutch house. Separate just enough to disconnect at the transmission drive flange. I think you can just split here without splitting at the engine/clutch first. Remove the trans top cover. Remove the drive flange from spline shaft. Remove the front bearing retainer. Remove spline shaft. Remove countershaft front retainer and remove the countershaft. Strip counter shaft to get to oiler gear, the last gear on the counter shaft. Obviously this brief paragraph leaves a lot to the imagination. You will need some pretty good mechanical ability, equipment and tools to pull off this repair. What happened to your oiler gear?

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