Need help with nh 310 baler. Bill hook not releasing twine.

[mkonger]

Replaced bill hook, baled 35 perfect knots now is doing the same thing of not releasing twine.Old bill hook had a flat spot in roller so I thought I had found the problem. Has anyone had any experience in replacing tensionier? That may be my next step

 

[bjr]

I'm really fighting the knotters on a old 269 (one side just won't tie, frayed bare string ends like twine pulling thru holders). I've built up the ramps where the bill hook roller rides on knotter frame. I've readjusted the knife arm where the half moon plate pulls the knots off the bill hook (make that half moon piece rub "firmly" on the top of the bill hook and the arm is only traveling the proper amount past the BH. I'm on my way into the local NH Dealer to see if he's got a twine tensioner plate assembly on the shelf. You gotta drive out a small pin on the pinion gear to remove them (have extra pins for when you drop one in the dirt), so get the right size of pin punch. I wish you luck. bjr

 

[coondle]

I think all NH knotters are the same in operation and many are identical across a range of machineI have had super^^, 317 (an australian made machine and 570 machines and worked on supre68 69 and 275's
Knots hanging on the bill hook can have several causes
! Knife arm scraper is not adjusted properly the curve of the bill hook. The cure is to (very technical this) hit the knife arm scraper with a hammer and bend it toward the curve of the bill hook it scrapes across
Take the retaining pin out of the knotter assembly and lift up the assembly and the knife arm scraper should contact the curved bit and make lifting the assembly difficult it should take quite some effort to lift the assembly
Even if the knife asrm scraper makes strong contact it can have wear that means there is a lead under which the twine enters and forces the knife arm scraper away from the curved bit if that is the case you may need to grind the knife arm scraper so it makes foll contact across the contact surface in the direction of travel OR buy a new one!
2 Knife arm travel is too short (have yet to see this) Cure is to adjust the knife arm to clear the end of the bill hook by 3/8 inch to 1/2 inch
3. Knife arm roller worn or not there Cure: new roller or knife arm
Blunt Knife ; there is a small triangle shaped knife that cuts the twine Cure: remove the knife arm and knife you do this by pulling out the split pin and with the knotter assembly lifted up wriggle and jiggle til the knife arm comes out(can be tight) sharpen the knife or replace it You may have to drill out 2 rivets but NH can supply little replacement bolts
4Twine holder tension too little CURE tighten the twine holder tension 1/4 turn at a time it is I recall a 9/16 SAE hex nut at the side with a compression spring under it not too much at a time!!!!
5. Bill hok cam too tight CURE loose off the hex head on the flat non-descript spring on the RHS on;ly1/8 turn at a time try the machine after every adjustment
6.roller on the knife arm damaged CURE needs a new knife arm good news is you get a new knife at the same time but you must adjest the knife arm contact to the bill hook
There are about another 6 or seven possible causes but they are very very rare in my experience
I have just read BJR post and the Twine holder problems are rare but first tighten the twine holder spring bolt and check the twine timing if it is retarded string stays on the billhook and check the twine finger timing if that is retarded then string on billhook again but these issues are very rare
Hope this is of some help