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New Holland 66 Baler Timing

A

Anonymous-0

Well-known Member
A drive change broke a link on my old NH66 baler. It is a great old baler, knots great and is gentle on the alphafa. It is the chain that drives the chamber plunger. I could just replace the chain, but I'm not sure if there are any timing issues when doing it. Can anyone provide some advice?
 
Yes it has to be timed. As far as how to do it, it would be hard to explain here. If its like my Nh271 the info you need is on a decal on the twine box lid and its very easy to time one. I know because that chain broke on my 271 this summer and I was back up and running in a couple hours. Would have been faster but had to drive 50 round trip to buy the chain
Hobby farm
 
I grew up on a farm and the first bailer we had was a NH 66.I think the part you are referring to is the Wadboard. Yes it has to be timed to where it is putting the hay in the chamber when the main plunger is in the return stroke, but I cannot remember exactly where the timing marks are.I know you have to center the main plunger with the arm straight up betweeen the marks on the bale chamber and the wadboard has to be placed in a certain position before connection of the chain but I just can't remember,but it's only been 40Years ago.
 
I have the parts and service manuals for the supper 66 you can have them for the postage if they would help. My e-mail is open
Jim
 
Replacing knotter drive chain requires timing.or you will break twine needles. I know. There are timing marks on the bottom side of knotter assy. They have to be aligne with plunger in exact location, refer to your manual please. Marks are very visible if you sit on a bucket and look at front side of knotter assy toward lower portion left side
 
I would start by pulling the wad board as far as possible from the bale chamber and push the plunger fully extended into the bale chamber. I would use the flywheel to turn it through one complete cycle by hand to see if everything clears. You may be able to adjust it so that the wad board goes a little further into bale chamber without being hit by the plunger? I used to operate a NH Super 66, but never had a manual.
 
Thanks for all the great comments. The chain is the one that drives the plunger, it runs from the front of the baler back to the same drive that powers the wad board. I bought a new chain last night and will try to get it installed tonight, I think (hope) I might have it figured out. Looks like rain this weekend and my alphalfa is already down, I don't like using the round baler on it if I can avoid it.
 
The New Holland Model 66 Operators Manual has this:
Wadboard Iming
Correct wadboard timing is essential in maintaining proper clearance between the wadboard and the plunger. Time the wadboard as follows:
Turn the flywheel until the plunger is in its extreme position toward the front of the baler. Loosen the wadboard drive chain and set the wadboard so that it extends into the bale chamber to its full extent with approx. 3 l/2 inches between the end of the wadboard and the left side of the bale chamber.
Install and tighten the wadboard drive chain and wadboard driven chain. Turn the baler manually to make certain that the wadboard has proper clearance at each end of its stroke.
 
Hi, I'm doing a project for my school involving a New Holland 66 Baler, and i was wondering if there is anyway to adjust the knotting system or anything else to cut down the bale length to 2 ft? Thanks!
 
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