Concave motor longevity - Page 3 - The Combine Forum
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post #21 of 38 (permalink) Unread 04-13-2019, 01:52 PM
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Actually they’re made in Spain.
https://www.doga.es/drive-systems.html
I was talking about the combines engine, it is made in China


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post #22 of 38 (permalink) Unread 04-13-2019, 07:17 PM
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I thought the concave only changes with ACS when a different crop is selected or maybe when a work condition is changed.
The resume from headland settings will only change fan and sieve settings from memory


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post #23 of 38 (permalink) Unread 04-16-2019, 04:21 AM
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Just an FYI, automation doesn’t control the concave motor at all so if you have unsolicited movement of the concave motor there’s a separate issue.
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post #24 of 38 (permalink) Unread 04-16-2019, 09:24 AM
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I have to wonder if the casting is simply not strong enough for the motor torque or the vibrations are causing fractures. Maybe worth trying to weld a strap across the casting to strengthen or some other option to add support/strength in the area of the breaks. If they keep breaking in the same spot then that would be further evidence.

Movement of the concave due to slugging should be taken up by slop in the gear mesh and even if it does reach the motor worm gear, it should simply spin the motor shaft and not break the casting.
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post #25 of 38 (permalink) Unread 04-16-2019, 09:46 AM
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I have always cleaned around the motor when changing concaves for another crop. Thought maybe all the junk jammed around it might break mount or internals when motor has to readjust to the different crop setting. Or continually doing it will cause stress and failure over time. Not saying that was the cause, just something that came to mind.
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post #26 of 38 (permalink) Unread 04-16-2019, 10:23 AM
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Nothing that controls that concave looks near heavy enough IMO. I never really paid attention to my Massey or Gleaner set up but no grief so far. Looks like Case should have made the concave adjustment move slower mechanically and taken some of the stress off that electric motor assembly. To much torque being sent back hitting wads and wet crop. I just stopped and looked at the pic again. Strange place to break. It should have broke where the bolts mount you would think. Its almost like something hit the motor.
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post #27 of 38 (permalink) Unread 04-16-2019, 10:28 AM
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A large hose clamp would work. From bottom of the motor over top of the worm gear housing would add piles of strength.
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post #28 of 38 (permalink) Unread 04-16-2019, 10:48 AM
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Does ACS not stand for Automatic Crop Setting?
Does that not include concave clearance and rotor speed if it is?

Doesn’t matter though, this is mechanical problem, how it is actually set is irrelevant.

CIH breaks this, New Holland breaks concave bolts, Deere breaks bolts on Active Concave, see any trend here?
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post #29 of 38 (permalink) Unread 04-16-2019, 01:04 PM
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Does ACS not stand for Automatic Crop Setting?
Does that not include concave clearance and rotor speed if it is?

Doesn’t matter though, this is mechanical problem, how it is actually set is irrelevant.

CIH breaks this, New Holland breaks concave bolts, Deere breaks bolts on Active Concave, see any trend here?
Claas doesn't move concave on auto settings either.

And I believe New Holland has since got rid of the shearbolt and replaced with something better. Can't remember exactly what they did though.

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post #30 of 38 (permalink) Unread 04-16-2019, 03:29 PM
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Claas doesn't move concave on auto settings either.

And I believe New Holland has since got rid of the shearbolt and replaced with something better. Can't remember exactly what they did though.
Hope so, what an awful setup, can't beat Claas on that one.

Your Claas doesn't auto set the concave/cylinder speed but mine (newer) one does.
And for 19 it will use Quality Cam to completely auto set entire combine.
We'll see...

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