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Farmall & IHC Tractors Discussion Forum
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1256 Steering

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Brian in AR

03-28-2007 10:08:36




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I have a 1256 wide front tractor with a steering problem. When the tractor is sittig still it is very hard to get the wheels to turn. As soon as you pull off the steering works fine. All hydraulics are working fine. The brakes are fine also. Could it be a bad pilot valve or what?




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J S Hull

03-31-2007 08:44:08




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 Re: 1256 Steering in reply to Brian in AR, 03-28-2007 10:08:36  
I had the same problem with my 826. The MCV had a small chuck busted off by one of the oil galleries.. Bought a used MCV and put that on and it steers perfect. (there not cheap-about $500 for a used one)



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Owen Aaland

03-28-2007 14:09:15




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 Re: 1256 Steering in reply to Brian in AR, 03-28-2007 10:08:36  
Is this a problem that occured after you made a change, such as installing wider tires? Wider wheels and tires can greatly increase the force needed to steer the wheels. The axle is designed so that the axis of the steering spindle, if extended to the ground, would come out in the center of the tire tread. This allows the tire to pivot on the ground when steering. Moving the tire out, away from the axis, forces the tire to move in an arc rather than pivioting.

If the tires are not the problem, it is possible that the steering pressure relief valve has failed or the o-ring on the valve has blown out. Any leak or other problems in the MCV should cause some change in the brake operation while steering or cause the oil pressure light to come on.

Problems with the steering hand pump, the control valve, or the steering cylinder should still be noticable with the tractor moving.

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