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Farmall & IHC Tractors Discussion Forum
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674 brakes

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marvin yenglin

05-01-2007 06:45:02




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Just purchased a 674 International. Need help with brakes. Is there a reservior for fluid. How do you bleed. I need to pump 3-4 times to get them up. Thanks, Marv




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Fromjb2

05-01-2007 15:47:08




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 Re: 674 brakes in reply to marvin yenglin, 05-01-2007 06:45:02  
Hi Marvin, always found it was easier to bleed the brakes when the hydraulic fluid was at operating temperature. Run engine at fast idle about 1100 to 1200 RPM, with clear tubing on bleed screws open bleed screws and let hydraulic oil drain into clean container. Continue bleeding until there are no air bubbles then close bleed screws. Return hydraulic fluid drained to the reservoir. May have to repeat a couple times until all air is out of the system.

JimB

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georgeky

05-01-2007 16:53:09




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 Re: 674 brakes in reply to Fromjb2, 05-01-2007 15:47:08  
If you use a long enough hoses you can put the ends of it right in the filler hole on the tractor and won't have to catch it in a container.



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georgeky

05-01-2007 09:00:43




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 Re: 674 brakes in reply to marvin yenglin, 05-01-2007 06:45:02  
The brakes are hydrostatic, so that means they draw oil from the tractor resivoir, which is the rear end. On the back of the tractor above rear axle there is a bleeder on each side. You can slip a small hose over the bleeder and place the other end of it in the filler spout on the back of tractor, then hold the pedals down and open the bleeder and let tractor run and it will bleed itself. If you will use a clear hose you can see when you have air free oil running through it. These tractors tend to need O rings evey few years in the brake system. I recommend you find someone who really knows these to work on it, as most folks forget some of the O rings when putting new ones in. I also urge you to get an IT manual for your tractor as it will explain all this better than I can, and other things too. They can be ordersd here as well as other online sites, or can be picked up at TSC or other farm stores. IH 51 I think is the manual you need.

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Jrry

05-01-2007 12:58:42




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 Re: 674 brakes in reply to georgeky, 05-01-2007 09:00:43  
I think the tractor needs to be running for a couple of minutes before opening the bleeder so the resoirvoir can fill also.



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