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Farmall & IHC Tractors Discussion Forum
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BRAKES ON 806

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HARLEN LARSON

02-16-2006 16:39:53




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WHEN I FIRST PUSH ON THE BRAKE PEDALS I HAVE NO BRAKES AT ALL BUT IF YOU HOLD THE PEDAL FOR A FEW SECONDS IT STARTS TO PUSH BACK AT YOUR FOOT AND THE BRAKES WORK REAL WELL UNTIL THE NEXT TIME YOU NEED THEM AND THEN NOTHING AGAIN. ANY IDEAS?




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HARLEN LARSON

02-16-2006 18:35:05




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 Re: BRAKES ON 806 in reply to HARLEN LARSON, 02-16-2006 16:39:53  
IF THE CHECK VALVES ARE LEAKING WHAT KIND OF A FIX AM I LOOKING AT? IS THIS A MAJOR REPAIR?



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the tractor vet

02-16-2006 19:01:10




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 Re: BRAKES ON 806 in reply to HARLEN LARSON, 02-16-2006 18:35:05  
Not a big deal to check out , there is one under the fitting on the top of the MCV where the line comes off the top nad goes over to the brake and one under the fitting on the brake valve where the line goes in . One 5/8 wrench and one 11/16th wrench is all that is needed for tools and maybe a dentist pick . One other thing that can cause this symptiom is that one of the brake adjusters is stuck and that the plates and disc's are setting wrong in the drum and it takes a bit for the hdy. fluid to force the pistion out far enough to make the brake work or the return springs are stuck . Myself i would just pop the drums off and look at what i have in there .

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HARLEN LARSON

02-16-2006 19:34:49




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 Re: BRAKES ON 806 in reply to the tractor vet, 02-16-2006 19:01:10  
OK, I'LL LOOK AT IT IN WARMER WEATHER AND WILL PROBABLY HAVE MORE QUESTIONS I AM SURE. THANKS FOR NOW FOR THE INFO.



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the tractor vet

02-16-2006 18:15:42




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 Re: BRAKES ON 806 in reply to HARLEN LARSON, 02-16-2006 16:39:53  
Well the bleeding will get any air out but i am thinking that one of the two or both of the check valves are leaking and not holding the hdy. oil in the line



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P Backus

02-16-2006 17:53:46




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 Re: BRAKES ON 806 in reply to HARLEN LARSON, 02-16-2006 16:39:53  
Sounds like they need to be bled. There is a bleeder valve on top of the brake housing. My manual says to attach a bit of hose to direct the hydraulic fluid away from the housing. With engine idling, have someone hold the pedal down and open the bleeder screw until fluid comes out without bubbles. Repeat with the other brake.
Paul



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P Backus

02-16-2006 17:52:43




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 Re: BRAKES ON 806 in reply to HARLEN LARSON, 02-16-2006 16:39:53  
Sounds like they need to be bled. There is a bleeder valve on top of the brake housing. My manual says to attach a bit of hose to direct the hydraulic fluid away from the housing. With engine idling, have someone hold the pedal down and open the bleeder screw until fluid comeout without bubbles. Repeat with the other brake.
Paul



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