Hesston 1091 - How to Replace the belts?

chappie · Oct 11, 2015

One of the belts broke on my Hesston 1091 haybine. The other belt is twisted, so I may as well replace both. But how the heck do I get the belts over that lower pulley? Obviously I needed to remove the shaft from the top pulley (the one that goes to the PTO). That was easy. But getting the belts over the bottom pulley looks impossible. I did remove the 2 bolts that attach the part connected to the sickle blades (looks like a tie rod end). But there is not enough space under it to lower that piece, especially when it's still attached to the sickle bar. Do I need to remove all the bolts going to the sickle bar too? -OR- is there a way to remove that whole "wobbler" assembly? I did remove the cotter pin at the top of the wobbler, but I cant slide it forward. I spent over 4 hours and still have no clue how to get that belt on.

~Frustrated~

--- HELP PLEASE ---
(Photos would be helpful)

Thanks

Brendon Warren · Oct 12, 2015

Your getting close. Those flat brackets that bolt to that bottom Lully need to come off. You also need to pull the cutter bar out enough to allow the woobler to slide straight off of where you pulled that cotter pin.

chappie · Oct 12, 2015

Your getting close. Those flat brackets that bolt to that bottom Lully need to come off. You also need to pull the cutter bar out enough to allow the woobler to slide straight off of where you pulled that cotter pin.
{END QUOTE]

Thanks for the reply. I dont actually understand what you're saying though. What is a "lully"? The cutter bar is now where 90% of the ball joint is hanging over the frame. It's very hard to turn by hand so it's hard to know if it's put as far as it will go.
I bought the belts today, and I asked one of the mechanics for some help, but he said my machine is old and he is not real familiar with it. He said that on the newer ones, the gear box has to come off. I looked at it again after I got home and removing the gear box would not solve anything as far as getting the belts on.

He also said that I should make sure the gear box is not siezed up, because that could eat up the belts too. I tried to turn the gear box with a channel locks on the pulley, but with the chain attached I'm turning a lot of stuff (rollers and so on). So, that's not something that can easily be turned by hand either.

I should mention that shortly after the belts broke, the universal joint broke on the PTO shaft. I had someone else running the haybine and he's not real bright. He mowed 4 or 5 more rows, and said it was not cutting. DUH!!! Then the u-joint broke.
(From now on, I'll run it myself).

But, there is a reason the u-joint broke too. I the other half of the PTO shaft was recently replaced with a longer shaft (that square part that slips into the square hole) was a half inch too long, and was hitting the u-joint. I took that shaft to the local machine shop today and the guy showed me where it was hitting. He said he'll cut off a half inch. (I got the longer shaft because the original PTO shart was too short, and would pull apart on sharp left turns). The machinest said it was not likely the original shaft for the Hesston 1091.

One other thing. The guy running the haybine never locked in the swing out tow bar, so it was swinging in and out. (Another DUH!). But I do find it very hard to swing that tow bar and lock/unlock that pin with the rope on it. I have the same problem on other machines which have a swinging tow bar (tow bar is probably not the right word, but it's the part that attaches to the tractor hitch). What is the trick to moving them? Someone told me to block the tires, but most of the time the blocks move.....

Thanks for all help!

Paul swpa · Oct 12, 2015

What you are calling the wobbler are called sway bars. They won't come off till you pull the part that you took the two bolts out of from between them, then remove the bolt and plate for the center bearing, pull everything off then. If I remember right, after you get the sickle attachment out (I use a heel bar) the belts will pass under the sway bars without needing to take the sway bars off. To turn the machine by hand one end of one of the rolls has flats on it so you can put a big wrench(crescent) on it.

lastcowboy32 · Oct 13, 2015

Did your operator plug the sicklebar with undergrowth or hay, then just keep mowing? If the sicklebar gets plugged badly enough, it won't be able to go side to side, and your belts will burn up.

You removed the bolts on what looked like a "tie rod" (your words), that should disconnect the sicklebar from the wobble drive. At that point, you should be able to move the sicklebar by hand. (others may argue this point, saying that you need a tractor or four-wheeler to pull the sicklebar out of a haybine...I say, if you do, then your guards are either plugged with hay or out of alignment, etc.)

If your sicklebar requires a sledgehammer or tractor and chain to slide it back and forth...then you have an issue. Check for plugged or mis-aligned guards.

I can rotate my 7 foot Hesston (1070...similar...just a little older and 7 feet wide) by disconnecting the PTO from the tractor, standing in front of the reel...then putting one foot on a bar of the reel, pushing down with that foot, while pulling another bar with both hands. Mine turns over just fine like that...the reel turns, the conditioning rolls turn, the sicklebar goes side to side...if you can't do that, maybe something is binding up.

Hesston 1091 - How to Replace the belts?

chappie

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Brendon Warren

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chappie

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Paul swpa

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lastcowboy32

Well-known Member

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