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Implement Alley Discussion Forum

NH 256 repairs.

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Jim Stone

03-11-2004 16:13:08




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I am in the process of the "refurbishing" an NH 256 rake and am trying to replace the bearings in the rakes. That is, the bearings on the pipes that hold the raking teeth. I have successfully removed the c-clip and can not get the bearing loose from the holder. Any help would be greatly appreciated.

Thanks,
Jim




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Chip

03-12-2004 05:43:17




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 Re: NH 256 repairs. in reply to Jim Stone, 03-11-2004 16:13:08  
Taper bearings(cone&race)?.If its the race (pressed in),your trying to get out ,run abead of weld on it,where the rollers run, let cool.They will come right out.



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colekicker

03-12-2004 05:42:22




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 Re: NH 256 repairs. in reply to Jim Stone, 03-11-2004 16:13:08  
Heat and beat baby. If that doesn't work, cut it out. These little minor repairs will keep you from spending the big bucks later. Sure, the other parts may be worn out, but replacing the parts meant to wear is a lot cheaper than a spider or a axle housing. We gotta remember, maintenance on a rake is just like the maintenance on the tractor pulling it. Take care of the little stuff so we don't have to spend the big bucks.

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Steve from New Holland

03-12-2004 04:37:42




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 Re: NH 256 repairs. in reply to Jim Stone, 03-11-2004 16:13:08  
All I'll say is: "This was not one of New Holland's better ideas"!!!! Enjoy. Steve



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Gary in TX

03-11-2004 20:31:53




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 Re: NH 256 repairs. in reply to Jim Stone, 03-11-2004 16:13:08  
Hey or should I say Hay Jim,
Just got done completely changeing all the tine bar bearings on one of my 56 Rakes. KellyC has the right idea on pulling the bearings, thats how I do it too. Too put mine back in I just placed the bearings on the tine bar and used a bolt as a punch and drove them all home, worked pretty good although I know a bolt is not really a good choice for a punch. I'm postin a pic of mine on impliment photos when I get done as it got a paint job and will get decals too. Oh, yea almost forgot, new tires as well.

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kyhayman

03-11-2004 18:11:57




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 Re: NH 256 repairs. in reply to Jim Stone, 03-11-2004 16:13:08  
Just finished doing both mine and my dads. Finally after screwing up two ends (on two different bars naturally) I resorted to heat. Takes about 5 mins with a Victor Journeyman cutting head to heat the end of the bar enough. I put the net back on, heated the end of the bar, and hit (the bar, on the steel, not the cast end) two or 3 times with a 2 pound engineers hammer. Bearing pop right out. Bearing wear toast but the way mine looked I wouldn't have reused anyhow. Cleaned the inside up (after it cooled) with a little emory cloth and filled with grease, new ones pressed righ in with a ball pein and a drift punch. Total time per rake was about a day. Make sure to not tighten any of the bars or the spider hub until all the bars are started.

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Kelly C

03-11-2004 18:00:55




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 Re: NH 256 repairs. in reply to Jim Stone, 03-11-2004 16:13:08  
I am doing this also on my Nh55 rake. This stinkin bearings dont just come out. I had to make a tool for this. I found a peice of pipe that was bigger than the bearing but smaller than the hole the bearing is in. I cut a section of the pipe and cut a piece of flat steel and drilled a hole in it to fit over the pipe.
I cut a section of pipe so that with the flat steel on it the tip of the bolt/bearing would just protrude enough to get the nut on it.
Then when you tighten the nut it pulls the bearing out.
To put the bearing back in. They dont just slidee in.I use a big socket that just fits the outer part of the bearing but is smaller than the hole and bash it in. Have to get it below the lip for the c clip.

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Jerry C. (Wi)

03-11-2004 21:09:05




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 Re: Re: NH 256 repairs. in reply to Kelly C, 03-11-2004 18:00:55  
I was wondering how some people got those bars off, I haven't needed to yet. But everything else is worn out, wheel hubs, axel bearings, even repaired gearbox bearings 3 times ( last time drilled and tapped for grease fittings) and had to weld new teeth into bevel gear in gearbox on a Sat. afternoon so I could get hay baled before rain hit next day. That was 3 years ago.



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