haybine stub guard adjustment

joe201 · Oct 1, 2015

I have a nh 479 hay bine that has stub guards on it and I need some advice on how to adjust the stub guards.I got this machine a month ago and cut about 2700 bales and it did a great job.Now its not cutting very good. any advice and or how to would be a big help.
Thanks Joe

hd6gtom · Oct 1, 2015

are the sickle sections sharp enough to cut what you are cutting?

rpllr · Oct 1, 2015

Not aware that they are adjustable in any way but check the edges of them where the knife runs against them if they are worn and rounded over it will not cut good. I assume the sections are in good shape? Are the hold downs on top keeping the section against the guard?

joe201 · Oct 1, 2015

the 479 manual says to keep them adjusted ( shimmed ) to .010 to .015 and some of my sections have .050 between the hold down clip and top of the sections. My guards don't look like they are worn real bad , so I am wondering if I can take the hold down clips off and bend them down to get back into the .010 range. They look good except the tips are slightly bent up. The bottom side of the hold down clips are smooth and I hope to bend them down and reuse them. I measured the old sections and they were .090 and the new sections are .115 and I'm going to replace the sections after I cut the last 2 fields. I found a place to get the high clips for 8.53 and the regular clips for 5.78 and the guards for 12.64 but times 17 the price adds up. Thanks for all your input and advice.
Joe

Andy Martin · Oct 1, 2015

Have you sighted down them to make sure they are all in line? With the knife out you can bend the high ones down and help the knife run true if you've hit anything to bend them up.

Chris in SK · Oct 2, 2015

Yes, adjust the knife by shimming or bending the hold down clips. We used to have a heavy piece of steel rod/bar with a ring welded about 6 inches up, that you could hook on the guard point and bend them, but mostly they'd just snap if they were bent badly already. Not sure with the 479, but they can start cutting bad when the knife drive bushing is going out so maybe check that if the 479 has one? Disconnect it at the drive end and see if you can slide the knife. They are usually tight somewhere!

GordoSD · Oct 3, 2015

Find a piece of black pipe about 5 feet long and just large enough ID to fit over a stub. Takes quite a bit to bend them. Practice on the old ones before you replace.
Check your local farm/fleet stores. Around here you can buy a ready to install new 9 foot bar and sections for about
$100.

Our Farmer · Oct 3, 2015

I adjust mine with a BFH. Slip a rod or punch or something between the cutter bar and the clip, then whack the end of the clip down a little till it tightens up to where you want it. As far as guards binding, I run a string between the two sides of the head along the tips of the guards. You'll see real quick which ones need a little attention.

joe201 · Oct 3, 2015

do you mean put something between the clip and section from the side and then smack the end of the clip ?
Thanks joe

haybine stub guard adjustment

joe201

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hd6gtom

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rpllr

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Andy Martin

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Chris in SK

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GordoSD

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Our Farmer

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