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Implement Alley Discussion Forum

How to time an NH 268 baler?

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07-26-2003 07:40:10

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Borrowed a NH 268 Hayliner. On first revolution the plunger came back and caught the needles at or near the top of the stroke and snapped both. OUCH! (You break it, you fix it.) Have the new needles installed, and timing seems the same, turning it over by hand: Plunger comes back, and catches needles at top of stroke. This seems about 180 degrees out to me. (Have an Oliver 60-T here, and needles are at top of stroke when plunger is all the way forward.) How should the 268 be? How do I check, and reset the timing on the 268? How could it have slipped? Owner says it was working fine when he put it away.

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Steve from New Holland

07-27-2003 17:16:34

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 Re: How to time an NH 268 baler? in reply to RayP(MI), 07-26-2003 07:40:10  
Ray, there are 3 things that MUST happen to properly time any New Holland baler. What Dan said about needles and plunger relationship is totally correct and more acurate, but hard to explain. So let's try a more simpler method. 1. Set the plunger like Kelly shows you in that photo. 2. Needles MUST, I repeat, MUST be all the way back in home position.(Finish turning the knotter/needles forward untill they are back home against the stop mechanism.) 3. Align the marks on the knotter driven sprocket and the casting immediately to the right of the sprocket. You should now be timed. By the way, your feeder unit does not need timed on a 268 baler. Also, I doubt that the baler ever was out of time. Something else happened and the safety latch apparently is not working. But that is a whole other story. Steve

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07-29-2003 19:37:36

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 Re: Re: How to time an NH 268 baler? in reply to Steve from New Holland, 07-27-2003 17:16:34  
Steve, Think you're right - something else came out, perhaps in transit. Owner came over and we hand turned it thru a number of cycles, and everthing ran OK. So then we put power to it, and it ran OK. Then we set it by the barn, and rebaled about 15 bales of loose hay without a problem. Thanks to you and the other guys for their information. By knowing what to look for, we were able to assure ourselves that the timing was right before we went and did something else stupid! Made excellent rebales - can hardly wait for the next field to be ready to bale! (And I can return the borrowed Oliver 60-T, which has been doing a lousy job!)

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Kelly C

07-26-2003 08:14:14

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 Re: How to time an NH 268 baler? in reply to RayP(MI), 07-26-2003 07:40:10  

Funny how that thing could get that far out of time just sitting.
I have photos of timing a 68. and have a 268 but not sure how to time the feeder on the 268. My Manual has not arrived yet.
To check the timing on the knotters. Put the plunger in the upright possition between the timing marks ( see photo). Then go back and look at the knotter clutch thats the part that the chain drives. There are 2 sets of hash marks or a series of dots. These should line up with in 1/2 inch. If not its out of time. You take off the chain that drives the knotters and turn the knotter drive untill the hash marks line up. Reinstall the chain and and turn the fly wheel by hand one time around and recheck the timing.
Then trip the knotters and run it through a tying cycle and see if the needle safety latch is working.

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07-26-2003 08:00:02

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 Re: How to time an NH 268 baler? in reply to RayP(MI), 07-26-2003 07:40:10  
Timeing should not have slipped as it is all mechanical. Needles should enter bale case just behind the face of the plunger when it is on the back stroke. That way as you say they should be done and out when plunger returns. There is a safety stop that should keep the plunger from coming back when needles are not in home position. With plunger drive arm straight up or between notches or punch marks on front of baler, timing marks on needle drive should line up. I would also check that feeder arm inner end is between notches or marks on back of feeder housing. If feeder is right and only needle drive is off, you need to adjust needle drive chain. If both needles and feeder fork are off adjust on main drive chain. A few days ago someone mentioned an internet site where someone goes through the timing proceedure.

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