New Holland 273 sq baler how do I adjust over riding clutch?

Shealray

Member
Made 60 square bales fine. New field grass thick

Pto turns but slips and will not move fly wheel.
Fly wheel will rotate and move pickups.

I know of the 2 pins they look good not making enough contact
to move fly wheel so guessing have to adjust clutch.

Have a manual for older baler does not say how to adjust.

Please help.
 
I'll bet the spring that push the pins out are bad or broken so the pins do not come out as far as they should and engage to drive things or the pins are stuck pushed in. Seen both happen on more then one baler
 
I am with Old, pins worn, springs broke, worst plate in slip clutch cut thru where pins catch. Yoke holes wallowed out. This machine is 40-45 years old.
 
I thought the over running clutch allowed the flywheel to continue to spin faster than the PTO as when you disengage the PTO. That's when I
hear mine at work - I think.

If the drive shaft won't spin the flywheel, could it be a sheared flywheel shear bolt? Even if it's sheared, the flywheel when turned will move the
plunger and everything down stream of it.

Probably off the mark, but just a thought.

Lots of hay down in my neck of the woods. Best week/weekend to make hay hay around here since just before Memorial Day.

Good luck,
Bill
 
If your 2 pins are spining the clutch disc mite be worn to much to grab them. It is the part that is between the clutch fiber discs. Take it out and weld up and grind down the area the pins grab. Have you tryed tightening the spring bolts? The 2 springs that push on the pins can be replaced with ones from the hardware store. Just get some good stout ones.
 
Like the others say:

Did the shear pin shear? That is 95% of the issues.

Did the fiber disk break out of the slip clutch, think there are 2, when they break out you need new, metal on metal won't work.

Do you have a wad of hay or a stick in the chamber, a looser clutch will slip on that, back flywheel up carefully a round or two and clean out.

The clutch you mention is 2 pins that catch on cogs on a spiral ramp, can slip fine one way,me gauge the other way. The ramps can wallow out,
the springs behind the pins can break, things can get wallowed out and loose enough the pins could fall out. On my older baler just take the bolt
out of the middle of the pto right there, and it all slips apart, you'll have the 2 metal pins and springs on the ground if they are still there.

Nh has on line parts diagram, look up your model there for drawing.

Paul

Paul
 
(quoted from post at 19:49:47 08/01/15) Like the others say:

Did the shear pin shear? That is 95% of the issues.

Did the fiber disk break out of the slip clutch, think there are 2, when they break out you need new, metal on metal won't work.

Do you have a wad of hay or a stick in the chamber, a looser clutch will slip on that, back flywheel up carefully a round or two and clean out.

The clutch you mention is 2 pins that catch on cogs on a spiral ramp, can slip fine one way,me gauge the other way. The ramps can wallow out,
the springs behind the pins can break, things can get wallowed out and loose enough the pins could fall out. On my older baler just take the bolt
out of the middle of the pto right there, and it all slips apart, you'll have the 2 metal pins and springs on the ground if they are still there.

Nh has on line parts diagram, look up your model there for drawing.

Paul

Paul

Update
Replaced springs on the back of the pins with new ones.
Had older new Holland baler with a better clutch ramp for pins so used it. PTO is definitely not moving fly wheel. OK so yes there was a wod of little wet hay in chamber making the clutch slip. Did all the above went back to the field lets talk about windrow and what gear and rpm to use.
I think in some spots the hay is a little wet still. Also think windrows are to big hay is thick. I am use to making big wind rows for round baler.
So I am going to divide the rows to make them smaller and rake more.
Neighbors let me have there little 3 acres or less fields so not much room the spread out windrows when grass is thick like this year. Do you have measurement of how deep the ramps for the 2 pins are suppose to me for maximum contact of pins?
Thanks for the helps all
 
Some of these guys are confusing the overrunning clutch with the PTO SLIP clutch. Thatis your problem, slip clutch is slipping.
First lock the plunger or the flywheel then with a BFW on the pto shaft. It should take 100 lbs of force 24 inches from shaft center to rotate the shaft. I'm guessing you are at about 50.
To adjust the clutch tighten each of the 6 clutch bolt nuts a quarter turn each. Repeat until you have the 100 lbs. (the ones with the springs on the back)
Wouldn't hurt to break the clutch down and sand all the rust and junk off the discs and the plates.
 
Drive at a speed that produces a bale about every 16-18 seconds. If you have really big windrows you could be using Low/TA back.
 
Yup, great use for the 5 speed with a TA, we ran a whole lot of hay and straw through the nh270 in super low. Big windrows. Makes really nice bales with big windrows -if- you can match the speed to the windrows. With a 5 or worse a 4 speed, you just have to keep to lighter windrows.

Paul
 
(quoted from post at 13:54:26 08/02/15) Some of these guys are confusing the overrunning clutch with the PTO SLIP clutch. Thatis your problem, slip clutch is slipping.
First lock the plunger or the flywheel then with a BFW on the pto shaft. It should take 100 lbs of force 24 inches from shaft center to rotate the shaft. I'm guessing you are at about 50.
To adjust the clutch tighten each of the 6 clutch bolt nuts a quarter turn each. Repeat until you have the 100 lbs. (the ones with the springs on the back)
Wouldn't hurt to break the clutch down and sand all the rust and junk off the discs and the plates.

Please explain how the 2 pins work with the clutch. I know they have to make good contact to move the fly wheel. If the pins slip over the ramps(not sure what you call it) the pto spins and fly wheel will not move.
Clutch is designed with friction plates to slip if it meets to much resistant from baler jams (correct)? If clutch spring is adjusted to 100 lbs will this help the 2 pins to make better contact?

I did go the field and hay was drayer and bales where made. I have a lot more little fields to do just want to make sure baler is adjusted correct.
 

This is what I did.

I have a ford 5000 ran it in first gear at 3/4 throttle went slow let baler pick up wind rows. When I ran into really thick part of windrow I hesitated a little to let the baler suck up the hay. This worked well did not clog up this time.
 

This little field if you call a field it is very small about 50 feet x 600 feet. Grass was thick windrows where hard to make consistent. Some times bales where close together and sometime far apart.
 
I'm not shure how much to build that disc plate up to. Just as long as the two pins will catch. As old as that baler is I bet that could be your problem. clean up where your fiber discs with sand paper or something to ruff it up.
 
(quoted from post at 19:35:15 08/04/15) I'm not shure how much to build that disc plate up to. Just as long as the two pins will catch. As old as that baler is I bet that could be your problem. clean up where your fiber discs with sand paper or something to ruff it up.

thanks
 

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