AgTalk Home
AgTalk Home
Search Forums | Classifieds | Skins | Language
You are logged in as a guest. ( logon | register )

JD 9600 combine vibration
Jump to page : 1
Now viewing page 1 [50 messages per page]
View previous thread :: View next thread
   Forums List -> Machinery TalkMessage format
 
farmrn
Posted 6/10/2017 21:36 (#6064358)
Subject: JD 9600 combine vibration


Southern IL
Vibration when turning on separator, but goes away after cutting for a while, seems to disappear after about 75 bushel in hopper. Don't see anything obvious, Thanks
Top of the page Bottom of the page
nav698
Posted 6/10/2017 21:45 (#6064380 - in reply to #6064358)
Subject: RE: JD 9600 combine vibration


SW MN
Cylinder has dust in it or check main driveshaft ujoints
Top of the page Bottom of the page
High Cotton
Posted 6/10/2017 21:46 (#6064383 - in reply to #6064358)
Subject: RE: JD 9600 combine vibration


Southern Illinois
Most common is dirt inside cylinder, usually goes away shortly, I'm guessing you just started running.?
Chopper have all blades? You could also check the driveshaft that goes through tank. Good luck
Top of the page Bottom of the page
730diesel
Posted 6/10/2017 21:51 (#6064402 - in reply to #6064358)
Subject: RE: JD 9600 combine vibration


NE ND
Have 9650 with 2400 hrs. U joints on driveshaft looked fine, but took apart to inspect. One was already worn through hardened finish on cross. Maybe weight on all that sheet metal around the driveshaft somehow deadens it.
Top of the page Bottom of the page
foxchasefarms
Posted 6/10/2017 21:52 (#6064403 - in reply to #6064383)
Subject: RE: JD 9600 combine vibration


Dust build up in the cylinder....some guys throw golf balls inside to keep the dust from settling in there....I have never tried it. Taking the plates out will fix it.
Top of the page Bottom of the page
fredro1
Posted 6/10/2017 21:54 (#6064409 - in reply to #6064358)
Subject: RE: JD 9600 combine vibration


Southeast Missouri
Dust collects on the back side of the rasp bars while you are running. When you disengage separator, and move the combine down the road dust falls off the back side of the bars and becomes unbalanced. If you turn the separator on and then kick it back off and let it stop completely, it helps a lot. Do it 3 or 4 times before starting to harvest crop again.
Top of the page Bottom of the page
Turbo 8820
Posted 6/10/2017 21:54 (#6064410 - in reply to #6064358)
Subject: RE: JD 9600 combine vibration


S.E. Washington
Another thing to check is the separator drive shaft, the long shaft running from the gearbox under the cab with the header clutch on one side and the separator drive on the other. It has a hollow tube center with machined ends that can break out.

Edited by Turbo 8820 6/10/2017 22:08
Top of the page Bottom of the page
CND
Posted 6/10/2017 22:58 (#6064522 - in reply to #6064410)
Subject: RE: JD 9600 combine vibration



Anamoose, ND
Make sure the bolts holding the gear case behind the cab have not broke. We had a similar vibration in a 9650 walker, once you had 70 bushels or so in the hopper the vibration would go away. Turns out one of the mounting bolts had broken off. We fixed that but still had a slight vibration and in the end we found the countershaft was bent. Apparently something happened all at once that bent the shaft and broke the bolt. Anything strange happen recently? Break variable speed belt? Plug the cylinder?
Top of the page Bottom of the page
730diesel
Posted 6/10/2017 23:00 (#6064525 - in reply to #6064522)
Subject: RE: JD 9600 combine vibration


NE ND
CND - 6/10/2017 22:58

Make sure the bolts holding the gear case behind the cab have not broke. We had a similar vibration in a 9650 walker, once you had 70 bushels or so in the hopper the vibration would go away. Turns out one of the mounting bolts had broken off. We fixed that but still had a slight vibration and in the end we found the countershaft was bent. Apparently something happened all at once that bent the shaft and broke the bolt. Anything strange happen recently? Break variable speed belt? Plug the cylinder?


Do you remember if you just saw the head of the bolt gone?
Top of the page Bottom of the page
longtimefarmer
Posted 6/10/2017 23:07 (#6064535 - in reply to #6064358)
Subject: RE: JD 9600 combine vibration


ncks
Also check front walker bearing.
Top of the page Bottom of the page
CND
Posted 6/11/2017 03:26 (#6064610 - in reply to #6064525)
Subject: RE: JD 9600 combine vibration



Anamoose, ND
Yes we noticed the head of the bolt had snapped off.
Top of the page Bottom of the page
soya257
Posted 6/11/2017 04:56 (#6064616 - in reply to #6064358)
Subject: RE: JD 9600 combine vibration


farmrn - 6/10/2017 21:36

Vibration when turning on separator, but goes away after cutting for a while, seems to disappear after about 75 bushel in hopper. Don't see anything obvious, Thanks


We had the golf balls thing and the vibration just kept getting worst and finally took the filler plates off( like so many on AT suggested) and there was so much dust that collected
was unreal.
There was dirt or dust that was in there like cement , clean it up and left the filler plates off and the vibration is down to not noticing any.
Top of the page Bottom of the page
scooter75
Posted 6/11/2017 06:04 (#6064645 - in reply to #6064522)
Subject: RE: JD 9600 combine vibration



St George IL
I had similar on a 9500. Mine turned out to be the primary counter shaft was out of round. I could see as the separator coasted to a stop a slight wiggle in the gearcase behind the cab. I finally found mine by taking one belt off at a time eliminating various things. Finally got down to just the counter shaft.
Top of the page Bottom of the page
SBAL
Posted 6/11/2017 06:40 (#6064672 - in reply to #6064616)
Subject: RE: JD 9600 combine vibration


Can you leave the plates off when doing wheat I clean my dust out daily
Top of the page Bottom of the page
nav698
Posted 6/11/2017 06:57 (#6064692 - in reply to #6064672)
Subject: RE: JD 9600 combine vibration


SW MN
Only time you need filler plates is in high moisture corn IMO.
Top of the page Bottom of the page
carlton
Posted 6/11/2017 07:17 (#6064721 - in reply to #6064358)
Subject: RE: JD 9600 combine vibration


northwest IL Lee Co
Check the universal joints on the shaft going thru the grain tank. I had one do exactly the same thing u describe. The lower joint came apart and the shaft ended up flopping around in the tank. Thankfully I had just dumped so tank was empty. It will get your attention when it happens. Makes a lot of racket. Took one day of making that vibration before it fell apart. Destroyed the shielding. Not a big deal to fix but had to wait a day for parts.
Top of the page Bottom of the page
1586
Posted 6/11/2017 07:55 (#6064792 - in reply to #6064358)
Subject: RE: JD 9600 combine vibration


We had a primary countershaft going bad with similar symptoms. Could be the others. Might see if you can see if the gearbox on the left is showing vibration somehow. When it goes the splines strip out in the gearbox but are loose for a while.
Top of the page Bottom of the page
John Smith
Posted 6/11/2017 08:45 (#6064888 - in reply to #6064358)
Subject: RE: JD 9600 combine vibration


South Central Illinois

Now I remember why I do not cut wheat with the walker.

The STS does not vibrate.

Take out the filler plates, cut them into pieces, put them in them in dumpster.

Top of the page Bottom of the page
Lil' Hoss
Posted 6/11/2017 08:48 (#6064898 - in reply to #6064358)
Subject: RE: JD 9600 combine vibration


NESD

One thing often overlooked and not mentioned here yet is the beater, Have seen them get so much dust inside that it was badly out of balance, the vibration would also be dampened by grain in the tank, remove the drive belt from the beater, make a reference mark on the pulley and then spin it, if it is full of dust likely it will always stop with the reference mark in the same place, if clean it will stop randomly. 

Top of the page Bottom of the page
jdbob8100
Posted 6/11/2017 08:51 (#6064905 - in reply to #6064792)
Subject: RE: JD 9600 combine vibration


ND
When I get done harvesting wheat at night with a 9500 -- I dump the rocktrap & run the combine up in speed & down about 9 times--stopping completely the separator & starting again -running slow then full sep rpm. Next day no problems. If I'd let sit overnight dust gets firmer & its a big shaking problem-way too hard letting the combine shake, rattle & roll.
Top of the page Bottom of the page
hf213
Posted 6/11/2017 11:15 (#6065116 - in reply to #6064358)
Subject: RE: JD 9600 combine vibration



Nothing was said, but did you dump the stone trap and check for a stick or stone or any debris that could have wedged say like in the 1st few rows of the concave ?

If you have the filler bars is, like other say, GET THEM OUT !
When I worked at dealership, we tried the golf balls too, with mixed results, but I honestly can say, more guys disappointed than happy with the end results.
Perforated fillers were a help, but remove them all works the best.

All above replies very good and spot on things to check.

I would add, maybe open the top cylinder inspection door and look at the spiders to be sure you do not have one cracked, especially around the shaft area, and dont rule out a cylinder shaft brg if OEM brg yet. IS your outer cylinder pulleys run out decent ?

When at dealership when the 9000 series 1st came out, we had a 9600 do something similar , and there was some inner sheet metal that goes around the top of the cylinder, that had enough glob of weld on it that when the hopper was empty it would not vibrate or make a ticking noise, but when you said 75 bushel or so, that when this one would act up and made me think of it. This was on a brand new machine though, with as many hours you have on yours, I highly doubt is your problem, but never say never, unless the cylinder shaft may have moved from side to side somehow.. ???

Another thought, have you checked the beater grate, to be sure that the hanger bolts are still in ?, one could be missing and allowing a twist per say.

Lastly, does it matter if you raise or lower feederhouse, check your stripper seal.
Top of the page Bottom of the page
Jump to page : 1
Now viewing page 1 [50 messages per page]
Jump to forum :
Search this forum
Printer friendly version
E-mail a link to this thread

(Delete cookies)