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Implement Alley Discussion Forum

NH Haybaler problems

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Ossie

07-07-2007 14:08:59




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Have a NH 315 that I just bought used and the drive train is driving me crazy. Busted 2 yokes on the splinded part of the flywheel in less than 200 bales!!!!! !!! NO shear bolt breaking or anything?? Can not see the rason why....NEED some help anyone else experience a NH that would burst a PTO yoke and never share the bolt ?? those suckers are $142 a piece!!!!!




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Blue Buddy

07-09-2007 16:24:00




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 Re: NH Haybaler problems in reply to Ossie, 07-07-2007 14:08:59  
mosy likely cause of broken ears on PTO yokes is the slip clutch not slipping and transferring the jerk to the powertrain, easy trick with any slip clutch, back them off, make them slip, stick a big block in the plunger knives and slip them when loose, retighten, when operating normally in the field any slip clutch should be warm when you lay your hand on it, too hot to hold? slipping too much so tighten, cold like the flywheel? loosen a bit and try again, should be just warm, throwers make the clutch slip every toss

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Chuck Bergstrom

07-07-2007 19:38:35




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 Re: NH Haybaler problems in reply to Ossie, 07-07-2007 14:08:59  
Ossie, Just thought of one more thing. The clutch,
O'running clutch: Are the pins stuck,or the pins &
springs not correct and don't retract? How about
the tractor PTO: Does it have independent PTO that does not "feather" or going in under too much
rpm? Good Luck, Chuck



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Sid

07-07-2007 17:14:02




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 Re: NH Haybaler problems in reply to Ossie, 07-07-2007 14:08:59  
It seems you guys have discussed all but two of what I would consider obvious possibilities. How about tongue length and the distance of drawbar below PPTO? Is the 315 a square baler? If so how about flywheel bearing.



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Gary in TX

07-07-2007 14:53:36




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 Re: NH Haybaler problems in reply to Ossie, 07-07-2007 14:08:59  
I was having a similar problem on a 469 haybine once. If I remember right I was told I was turning too sharp with it and it was binding up somehow. That would be the only thing I could think of right off if everything else is doing what its suppose too.



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Chuck Bergstrom

07-07-2007 14:28:04




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 Re: NH Haybaler problems in reply to Ossie, 07-07-2007 14:08:59  
Ossie, The 315 doesn't have that trouble unless
something is wrong. Dumb question, but is the
hitch fully into field position? Does the PTO
assy. slide easily in and out. Is the
distance from the end of the pto to center of
hitch pin correct(don't have info in front of me
but about 15 1/2" ?? on a 540 RPM. Is your slip
clutch stuck solid?? Is it factory shafts?-the
yokes need to be in sync.,- see manual. Chuck

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Ossie

07-07-2007 14:33:27




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 Re: NH Haybaler problems in reply to Chuck Bergstrom, 07-07-2007 14:28:04  
Yep to all of the above Chuck.... that is what has me puzzeled /? All new factor drive train put on this week. hitch is 15 inches as per NH for 540 slip clutch working all shafts teloposcoping as should. joint at 180 degree angles !!!!!aaaaa h what can I be missing ??? I am the guy that the other NH folks come to for the answer and I can not fix my own baler !!!!! !!!!



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Ossie

07-07-2007 15:01:27




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 Re: NH Haybaler problems in reply to Ossie, 07-07-2007 14:33:27  
Make that joints at 90 degress..... ....I am the one 180 degrees out of aline ..LOL.....
Thanks for the help folks..we will whip this thing yet!!!!!



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Randy as in Randy-IA

07-07-2007 15:57:36




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 Re: NH Haybaler problems in reply to Ossie, 07-07-2007 15:01:27  
Hi , 90* apart ? The yokes on any solid shaft need to be lined up ear to ear down the shaft . This includes the slip shaft . Is that what you meant to say :) ? The only ones at a 90 would be the next solid shaft unless you have a cv joint . ...Randy



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Ossie

07-07-2007 16:03:06




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 Re: NH Haybaler problems in reply to Randy as in Randy-IA, 07-07-2007 15:57:36  
90 degrees a cv joint...you are quite correct. have not found anything that indicated that NH had a problem with these slip clutches???? Going to take clutch apart tomorrow and check it...do you happen to know the ft.lbs of torque for the slip on the NH 315 as I do not have manuel on the baler?? Thanks



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EH in SC

07-10-2007 16:21:18




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 Re: NH Haybaler problems in reply to Ossie, 07-07-2007 16:03:06  
Ossie, My manual says:
For ser #573420 and below set to slip @ 3300in. lbs torque length of tension springs should be approx 1-7/8"-for ser #573421 and above to 4800 in lbs.length of tension springs should be approx 1-3/8". Obviously all springs should be adjusted evenly. Hope this helps, best of luck, Ed



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Randy as in Randy-IA

07-07-2007 16:41:45




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 Re: NH Haybaler problems in reply to Ossie, 07-07-2007 16:03:06  
No Ossie , Sorry I don't . I don't know anything about the NH balers . I was just commenting on the powershaft yoke alignment . A cv joint is nothing more than a shaft with two yokes in it effectively making it a very short shaft in sync with itself . If the two yokes on a telescoping shaft are 90* apart then they are out of sync and will vibrate themselves to death . It will almost certainly break a yoke . Look at a u-joint , the trunnion has to move at each end of the shaft equally to run smooth . I might be preachin to the choir here . I have slip clutch info for a 14t baler but that NH is way out of a 14's league I think . You might try a slip test before you take it apart . If it works that would put you in th ballpark . The 14t slips at around 375 - 500 ft pounds if I remember right , or 38 to 50 lbs of weight at the end of a ten foot bar . Don't know if the NH would fall into that category or not . Good luck figuring it out ! ...Randy

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