NH 7ft. Haybine Wobble box?

Hey guys, Going to the auctions soon. Looking for a 7 foot New Holland haybine to replace my Gehl 1090. We always hear about the "wobble box" on these forums, and how they are pricey to fix. Since I never had NH Moco, I was wondering what to look for so I don't get stuck with another expensive project. Maybe you guys could enlighten me? My Gehl has kind of a steel pitman soooo.... Replacing the Gehl cause the gear box has a huge crack in it. Leaks 90 weight all over . LOL thanks fellas. Time to make hay soon. Let's see what we can break this year!
 
Its not a box. No gears running in oil. We just call it that. Its a eccentric shaft with flywheel/belt pulley with a yoke on it. Combine heads use kinda the same setup.
 
One big thing to look for on those is in the gearbox not the wobbler. Rock it back and forth at the clutch to check for play in the gearbox. There is a keyway in the shaft that starts to egg out. On the wobbler check for up and down play where it bolts to the cutter bar. Good luck. They're good machines with a little preventative maintainence.
 
Unless you need the compactness of the 7' to fit narrow gates and roads then I would go 9' cutter. Especially If the 2 M's (assuming Farmall M's ?) in your handle are to be the mowing tractors you will be more fuel efficient pulling the 9'.

You will likely burn the same amount of fuel pulling either with a Farmall m, so might as well have the 9'.
 
Hi, Yes I have a bunch of M's (an addictiuon) but I do most of my haying with a compact diesel. Been pulling the 9 footer (Gehl) for 5 years and when i open afield around 11am its sloooowww going.I'm in upstate NY. Lots of rain and heavy dew. Watched my neighbor do my fields last year with his 7 footer, and he was sailing! Less draft, lighter machine. He did my fields quicker than I ever could with my 9 footer. What you say makes sense , yes But I was impressesd with the New Holland. Thanks for your input. Regards.... Darryl
 
I think your neighbor likely had his machine in tip top shape sickle section and guard wise. That would have more to do with it than the 7' compared to 9' part assuming ample tractor hp, torque, and weight of a Farmall m. But on a small lightweight compact diesel tractor then I would want the 7' too. Behind the Farmall m though I would want the 9'.

On top of that some brands cut better than others, and the type of guards can make a difference too (stub verses traditional).

I have cut in the dark after dew and in the rain with my Hesston 1120 (9' sickle based mower conditioner). That was some tough cutting in those conditions and my Farmall h did decently well running it. Normally use my Farmall m on the moco as it handles it better, but she started running poorly which is why I ended up cutting well after dark and in the rain in the first place - sure was not my original intended plan. Took me a bit to switch tractors.

Anyway, I was impressed with my moco machine and I do not keep it in tip top shape either (shoestring budget operator).
 

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