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Was it the motor or the shaft that the motor turns that the concave hangers mount to?* I know that it has been a weakness breaking the hangers and the best solution I came up with is to run the concaves tighter rather then more open.* When the concaves are too far open the mounts that hold the adjusting rods are perpendicular and there seems to be too much leverage on them.* as the concaves close the mounts move closer to parellel (sp.) and hence less leverage.
 

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I think that was a huge problem with all of the 70 series machines, we broke 4 motor/housings. Has anyone seen the 2009 70 series to see if they changed it? I hope they did, dealers in mb and sk couldn't stock them things fast enough. Its all coming out of deeres pocket too as warranty, it doesn't seem to happen on the 60 series.
 

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Ive seen these break due to the screws getting too much stress, loosening and then strippin out splitting the box apart. These are not made by deere and im sure that the same manufacturer makes a more heavy duty actuator. Try Kaman industrial tech I know they can get these actuators, there are model numbers on them if not they can I.D. the unit by shaft diameter, stroke, etc.
 
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