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Implement Alley Discussion Forum

New Holland 352 Grinder/Mixer

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12-19-2006 06:09:30

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I recently bought a NH 352 Grinder/Mixer at a sale. I have been going over it, servicing it and so forth, I noticed the top bearing support on the vertical mixing auger was pretty weak and appeared to have been damaged by the salt mixed into the feed over the years. It was weak and bent upwards slightly. I have bought a new support from my dealer and now have it installed. What I notice now is that the shaft on the auger does not completly protrude through the bearing. It seems as though the auger is dropped down about 1/2" to 3/4". Does anyone have one of these that could help me determine what needs to be done here? I have not tried to run it this way and do not know if this is normal or not. It does not seem right to me. Thanks! Richard

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12-24-2006 07:45:12

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 Re: New Holland 352 Grinder/Mixer in reply to BarnYard4020, 12-19-2006 06:09:30  
My parts manual shows a spacer at the bottom of the auger(with a set screw) but none at the top of the auger. When standing on the ladder at the rear of the grinder, I can see that there is more of a rise on the left side of the grinder top. It almost appears that the bracket for the unloading auger may have pushed the top up, like excessive downward pressure was put on the unloading auger.I guess I will try extending the ears on the top bearing support. The left side will have to be extended 3/4" and the right side only about 5/8". I don't think this will hurt anything since most of the pressure on the auger is vertcal(straight down to the gear box.)The top bearing will mearly support the top of the auger so as to not wander from side to side.

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ny bill

12-21-2006 18:40:34

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 Re: New Holland 352 Grinder/Mixer in reply to BarnYard4020, 12-19-2006 06:09:30  
i just saw these posts tonight. i have a 352 and 353 nh mixer. i believe the auger attaches to the gearbox which is bolted to the frame. if that hasn't moved, the top must be what moved. the bearing is greasable and i thought there was a lock collar on it too. i'm pretty sure the shaft sticks through the bearing on mine. with the auger loose on the top, can you pull it by hand vertically, as if the bottom shaft was loose? can you shim the new plate away from the top of the tank, so the bearing catches more of the shaft? i'm not giving any real answers, just brainstorming possibilities.

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12-21-2006 20:01:14

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 Re: New Holland 352 Grinder/Mixer in reply to ny bill, 12-21-2006 18:40:34  
Bill--I tried to grab the auger and lift it upward. It does not move at all.The only thing I can figure is the top of the tank must have been pushed upward with an overload of feed in the tank. I was thinking maybe I could weld some extentions onto the bearing support so it extends downward into the tank and thus will let the shaft stick through further. Any other thoughts on this? I rechecked my parts manual and it does not show any locking collar above the top bearing but there is one on the bottom of the auger they call a spacer but in the drawing it appears to have a set screw in it. I think if the bottom collar moved or was loose I would be able to lift the auger upward by hand. This is not the case. I think the lid is bent about a 1/2' to 3/4". Since the top is a welded unit to the round tank I don't think it would be very easy to bend it back. That is why I was thinking of just leaving it alone and extending the ears on the bearing support so as to let it come down further on the auger shaft.

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ny bill

12-23-2006 08:54:24

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 Re: New Holland 352 Grinder/Mixer in reply to BarnYard4020, 12-21-2006 20:01:14  
the shaft on my grinder sticks through the bearing about 3/8". theres no lock collar on top. i can't feel one under the plate, but there seems to be quite a lot of bearing under there, too. probably where the allen screw is. there really isn't much side stress on the auger in one direction or another. if you have well over half the shaft caught in the bearing and a set screw holding it too, how about just running it the way it is? otherwise, i think your solution to extend the ears on the bearing plate is the way i'd deal with it. hth. bill

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12-19-2006 17:56:21

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 Re: New Holland 352 Grinder/Mixer in reply to BarnYard4020, 12-19-2006 06:09:30  
Are you sure the whole top is not bend up in the center.

Does the auger support attach to the top or the sides of the tank?

Maybe the old bearing was holding The top down where it belonged until you let it loose when removing the old bearing.

Just a thought, Gary

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12-21-2006 05:39:10

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 Re: New Holland 352 Grinder/Mixer in reply to IaGary, 12-19-2006 17:56:21  
The bearing support is attached to the top. There was no locking collar above the bearing. My parts manual does not show a lock collar above the bearing. After looking at the top of the grinder I can see it may be bent slightly upward. Someone may have put an excessive amount in the mixer and bent it. Now the question is how to get it back down. I don't know weather this is enough to make the differance or not. The other thing I was wondering if it could be possible for my auger to have sliped downward. Anybody else care to weigh in on this or have a New Holland grinder that could lend some thought?

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