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Farmall & IHC Tractors Discussion Forum
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1206 hydraulics still down .....

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Asking Again

06-20-2007 05:07:15




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Well, I posted this problem some time ago. My friends 1206 hydraulic oil gets contaminated with water and everything shuts down. Drained out ALL of the oil (yes, there was water in there) from all the drain plugs (3) and replaced it plus a new filter. The oil in the final drives was separate from the tranny/differential. Still nothing happening, the steering is as dead as a doornail. I don't know if I have hydraulic pressure to the hoses. Anything that you might suggest doing or maybe a hint of what the problem might be? Is there a location on the tractor where I can test to see what sort of hydraulic pressure I have in the system?

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the tractor vet

06-20-2007 07:42:03




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 Re: 1206 hydraulics still down ..... in reply to Asking Again, 06-20-2007 05:07:15  
Well lets get down to some things here , (1) Does your PTO work??? if ya have no PTO then ya ain't going to have any hyd's. anywhere (2) does the three point go up or down ??? if not then back to # 1 If the PTO is not working then ya have a problem with the PTo input . Now if it is working and ya are full of hyd. fluid and it has a new filter and it is still not picking up prime then ya run the engine at 2000 RPM and turn the steering wheel to the left till it picks up prime or after 2-3 mins. of this and still no prime . Then ya can try taken a blow gun and removing the trans dip stick and stick the nozzel down in there a bit and with a rag to sorta help hold the air in with the engine running at lets say 12-1500 RPM blow air in , it will take a bit to pressure up the transmission . NOw be warned that doin this can and will give ya a bath in hyd oil if ya just pull the blow gun out fast after she does pick up prime . Just don't get carried away with pressure lets say that 10-20 lbs will do the job . Now as for pressure checking first you will need a good gauge that can read 600 lbs atleast depending where ya check if ya are going to test at the teltail lite then a gauge that reads up to 60 lbs is fine and it should read around 10-15 lbs there on the bottom lower right ya should have around 235-300 depending on what spring is in the pressure reg. you will also need the fittings to make the hook up . Now be warned don't go and think that will just start adden homemade shims here and there and will make this puppy work you will not be the first that launched the MCV into orbit . Since i have no idea on where your at and more then likely i can't just run over myself ya may be way ahead of the game to BIT THE BULLET and seek PRofessional help as you both can waste a ton of time and money foolen with it and end up getting hurt or screwnsomething up that will cost more then the repair itself would.

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trulyred

06-20-2007 06:05:43




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 Re: 1206 hydraulics still down ..... in reply to Asking Again, 06-20-2007 05:07:15  
Water in the hydraulic system usually comes from condensation depending on climate even if the tractor is kept inside. You can prime the MCV pump, the one on the side of the TA housing by removing the flow divider (1 inch head plug facing the rear on the MCV valve) the spring and the spool. Then crank the engine with out letting it run until oil flows from the removed flow divider passage.



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El Toro

06-20-2007 05:48:10




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 Re: 1206 hydraulics still down ..... in reply to Asking Again, 06-20-2007 05:07:15  
There should be a pipe plug on the outlet of the pump for installing a pressure gauge. The old lettered tractors had this feature so I would think your tractor would have it so IH mechanics
could troubleshoot for problems. Hal



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