965B Transmission failure - Page 4 - The Combine Forum

 9Likes
Reply
 
LinkBack Thread Tools
post #31 of 37 (permalink) Old 02-27-2016, 02:42 PM Thread Starter
Senior Member
 
Join Date: Jun 2012
Location: east central Alberta
Posts: 755
Mentioned: 0 Post(s)
Quoted: 141 Post(s)
Quote:
Originally Posted by service101 View Post
Little late on this thread... Sorry ... We had a 965C transmission fail at high speed as well. Upon disassembly we found much the same issues. One of the two planetary assemblies looked like it got hot and seized the planet gear. This shattered the gear and broke the main case. Most of the issues with these transmission was software or clutch pack related. We rebuilt lots of 865B and C series transmission and differential steering units.

In answer to your question I think high speed road travel is part of the issue but not the whole... Lube pressure in these transmission is low... Meaning RPM is key to correct lubrication of transmission...

The only other thing to watch out for is over filling the transmission. It will heat and cause internal damage...
Thanks 101, I really appreciate input from someone like yourself that knows these trannies from having been inside of many units over the years. The low oil pressure problem below 1800 rpm is
interesting, since that engine is designed to pull at least 300 rpm lower than that, and most guys think 1800 on the engine is max. So what, the transmission needs a larger flow pump?

A few clarifications on my transmission. It was a 2008 965B with 4400 hours. It had a major update done in the trans at about 1800 hrs. At 4000 hours when I bought it we pulled all the oils, filters, screens and opened up all the places where you can get access to look for cuttings or debris on the bottom of components. The hyd reservoir was really clean and there was a small amount of small pieces of clutch material in the bottom of the trans housing. The Agco tech working with me thought it was a normal amount and since no steel was present, we considered it a good sign. We have no knowledge of how long it ran on the present oil and filters either. We cut the filters and again found a small amount of similar material. He checked with Agco and they said it looked normal and everything should be good. We completed the oil change with all new filters and did a season of seeding putting on under 200 hours.
After this I again pulled the transmission filter and cut it open to inspect the filter paper. In a season of seeding there was absolutely nothing in the filter paper, telling me that there was nothing going on in the transmission at that time. I seeded one more crop after that and loved the tractor and how it pulled the drill at about 1650 rpm. I have one 1/4 that is quite hilly and shifted down one gear and increased the rpm to 1850. Impressive torque!

It was the following spring that the transmission problem happened at 20 mph on the road. At that speed the rpm must be up over 1800 so leaning back to the ground speed being the problem??? When the transmission was rebuilt last spring after failing, there was a bulletin calling for drilling out oil supply holes to a bigger size somewhere in the planetary area. So even after one level of updates to this trans, they are still admitting they do not have enough oil supply to the planets. At $50,000 a pop, they better get it right soon. This is beginning to sound like a class action may be needed. Especially since they accept no responsibility and will not admit that they have a problem at high speed. I have tried to suggest that they advise owners to impose a speed limit for the benefit of all, but they just will not talk to me now. I still say it is a great tractor, but nobody can afford problems like this. Thanks for all the input.

Transaxial is offline  
Sponsored Links
Advertisement
 
post #32 of 37 (permalink) Old 03-25-2016, 07:48 PM
Super Moderator
 
Christian A. Herrnboeck's Avatar
 
Join Date: Oct 2007
Location: St Gregor, SK
Posts: 5,926
Mentioned: 2 Post(s)
Quoted: 238 Post(s)
Send a message via AIM to Christian A. Herrnboeck Send a message via MSN to Christian A. Herrnboeck Send a message via Yahoo to Christian A. Herrnboeck
Quote:
Originally Posted by jmf View Post
So the best things to do are keep the rpm up over 1800, and don't run it to fast down the road? Are there any other updates to ask dealer about?

21st Century, Half a million dollar or better tractor, and it sounds like tips for a machine built in the 70s.


Cat or AGCO, or somebody needs to get their $Hit together.... This should be unacceptable today....

Transaxial and Woodpecker59 like this.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Christian A. Herrnboeck is offline  
post #33 of 37 (permalink) Old 03-25-2016, 08:03 PM
Senior Member
 
712alberta's Avatar
 
Join Date: Aug 2013
Location: West of Don, south of Coolio,
Posts: 681
Mentioned: 0 Post(s)
Quoted: 139 Post(s)
Quote:
Originally Posted by Christian A. Herrnboeck View Post
21st Century, Half a million dollar or better tractor, and it sounds like tips for a machine built in the 70s.


Cat or AGCO, or somebody needs to get their $Hit together.... This should be unacceptable today....
Yep, 100% unacceptable. Perhaps this will nudge Agco to finally put a CVT in there high horse power units.
712alberta is offline  
post #34 of 37 (permalink) Old 03-26-2016, 12:33 AM
Senior Member
 
Join Date: Nov 2009
Posts: 242
Mentioned: 0 Post(s)
Quoted: 29 Post(s)
Are these the same tranny that goes in a challenger 855. Is there any years that didn't have this issue
mbcat is offline  
post #35 of 37 (permalink) Old 07-24-2016, 06:30 PM Thread Starter
Senior Member
 
Join Date: Jun 2012
Location: east central Alberta
Posts: 755
Mentioned: 0 Post(s)
Quoted: 141 Post(s)
Quote:
Originally Posted by mbcat View Post
Are these the same tranny that goes in a challenger 855. Is there any years that didn't have this issue
I think between the 8xx and 9xx the difference is just in the back end of the case and how the power flows out into the differential on the 8xx and into the articulating hinge in the 9xx. There are at least 2 major update levels in a 2008 model and as recent as 2015 they are doing version 2 of that update. Still low oil flow problems to planetaries at high speed roading. Part of the fix is drilling oil passages bigger to get more flow and cooling.

Does anyone know if these updates have been designed in from the factory at some age or model of these TA22 transmissions.

In a post by Christian Herenboek ? in early 2016 he states that Versatile had a delay in the release of their 4WD line because of transmission problems (Cat TA22) so this problem still may exist.
Transaxial is offline  
post #36 of 37 (permalink) Old 07-24-2016, 07:34 PM
Junior Member
 
Join Date: Jun 2014
Posts: 23
Mentioned: 0 Post(s)
Quoted: 4 Post(s)
I have heard that the 865A do not have the transmission problems the Bs and Cs have had. Is that true? And why would that be?
FranckSaskfarmer is offline  
post #37 of 37 (permalink) Old 08-19-2016, 11:15 PM
Junior Member
 
Join Date: Aug 2011
Posts: 27
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
The transmission went out of my 2008 965B at 400 hours. I bought it with 200 demo hours on it, so it was still under warranty. I could never get a straight answer on why it failed. I suspected a misajusted switch on the clutch pedal wasn't letting the clutch packs fully engage. The dealer had tried twice to set the clutch properly and I was never satisfied. Looks to me like AGCO cheapened the switch from the one Caterpillar used on the original 765's. I now have 2200 hours with no more issues.
Transaxial likes this.
Remraf60 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the The Combine Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome