[rfoster225]

im new to my 9760 and after about 30 acres I had chaff and straw built up on top of the rotor behind the cab alll the way up to the feeder house clutch. Is this coming out of the joints in the rotor housing? thanks in advance

 

[jmf]

You probably have a small hole on top of rotor tube would be my guess, that's what my 9760 did anyway.

 

[rfoster225]

thanks there seems tobe a gap in the balck plastic joint covers on the rotor could that be a problem

 

[skgrain]

chaff build up is normal unless it is causing you isssues. Its too bad they make so many little shelves to hold chaff. In alfalfa seed one year the thing wanted to go on fire all day cause it was holding some tinder dry chaff on some little shelves.

 

[gopherchoker]

I would say its the gap between the black cover #6 and the rotor tube. http://i1229.photobucket.com/albums/ee475/pederbilt/thecombineforum.com/HP14106________UN05JAN04_zpsa34a85f9.gif

 

[wavesofgrain]

These gaps are normal. I use duct tape.

 

[quappelle]

It's possible someone had the cover off to replace the rotor bearing or rotor speed sensor and didn't get it back on right.

 

[rfoster225]

thanks for the all the replys. this is after the JD tech replaced the seal however on the rotor cover. We put new foam on the front rotor cover along with dual 1/8 inch x 1/1/4 strap all the way over and the foam is still present when we looked at it after harvesting sunday afternoon. is it possible the chaff is being blown forward from the engine air?

 

[ricefarmer09]

Make sure your plastic side rotor cover doors are closed properly and tucked under the channel they are supposed to be under. This is the only time we get any chaff under the hopper. The easiest way to clean this mess is with a gas powered leaf blower.

 

[chompy]

I discovered some small wear holes at the front left side of the top rotor cover on mine. They would allow some chaff build up over a day, but not as much as you are describing.

Sounds like ricefarmer might be on the money. If you don't have those black plastic covers installed correctly at the top, it will make a mess fairly quickly. It's a rookie mistake I made last year!

With the covers correctly in place, and no holes, there should be hardly any chaff on top of the rotor after a day of harvesting.

 

[Lood]

Make sure your plastic side rotor cover doors are closed properly and tucked under the channel they are supposed to be under. This is the only time we get any chaff under the hopper. The easiest way to clean this mess is with a gas powered leaf blower.

Exactly what happened on my 9660sts last season. Mechanic did not put the left front cover back properly and all the chaff blew out thought that gap. Only after close inspection, did i see the problem. Another indicator was the wheat sample that I couldn't get clean enough. Direct result of the wind escaping at the rotor cover door.